Fully-wrapped protective cover for aircraft engine

Abstract

The utility model relates to a fully-wrapped protective cover for an aircraft engine, the engine comprises an engine main body and a tail nozzle located at one end of the engine main body, and the protective cover comprises a cover body, an opening part formed in the cover body and a tightening part arranged around the periphery of the opening part; the cover body is designed to be capable of completely covering the whole of the aircraft engine; when the cover body covers the engine, the opening part is constructed to be located at the connecting position of the engine and a hanging device used for fixing the engine to an airplane, and the tightening part is designed to be capable of sealing the opening part. The engine protection cover can be widely applied to full-wrapping protection of various types of aircraft engines, when an aircraft is parked on the ground or repaired and maintained and encounters strong wind, sand and dust weather, foreign objects are effectively prevented from entering the engine, the problem that the engine protection cover is easily blown to be broken by extremely strong wind to be invalid or blown away is effectively solved, cost is reduced, and efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of aircraft assembly and manufacturing, and in particular to a full-enclosed protective cover for an aircraft engine. Background Art

[0002] According to the parking procedures in the aircraft maintenance manual, when an aircraft is parked or undergoing maintenance on the ground, and encounters strong winds and dust storms, the engine must be enclosed and protected to prevent foreign objects from entering the engine. Due to seasonal strong winds and dust storms in some areas, with instantaneous wind speeds exceeding level 11, the engine's full-coverage protective cover must have a wind resistance rating of level 12.

[0003] Preliminary research and analysis revealed that the engine covers used on Boeing and Airbus aircraft are separate, separate protection devices, such as air intake and exhaust covers. These are costly, offer less protection than fully enclosed covers, and are unsuitable for high winds and dust storms. The highest wind resistance rating of the airlines' custom-made, full-enclosed engine covers is Class 6, far below the Class 12 required for extreme winds and dust storms. If foreign matter enters the engine, repair costs and operational losses are substantial. Utility Model Content

[0004] The purpose of the present invention is to at least partially avoid or solve the above technical problems.

[0005] Specifically, the utility model proposes a full-enclosed protective cover for an aircraft engine, wherein the engine includes an engine body and a tail nozzle located at one end of the engine body, and the protective cover includes:

[0006] A cover body, wherein the cover body is designed to completely cover the entire aircraft engine;

[0007] an opening, the opening being provided on the cover and being configured such that when the cover is wrapped around the engine, the opening is located at a connection between the engine and a suspension device for fixing the engine to the aircraft; and

[0008] The tightening portion is arranged around the periphery of the opening portion and is designed to seal the opening portion when the cover is wrapped around the engine.

[0009] The utility model sleeves the cover body onto the aircraft engine through the opening portion, and the tightening portion seals the opening portion of the cover body after sleeve installation, thereby achieving fully enclosed protection for the aircraft engine. When the aircraft is parked or under maintenance on the ground, in case of strong wind and dust weather, the utility model effectively prevents foreign objects from entering the interior of the engine. At the same time, the wind resistance performance of the protective cover is greatly improved, and the wind resistance level can reach level 12.

[0010] According to some embodiments, the tightening portion includes a first tightening portion, and the first tightening portion is configured to be located around the hanging device and to seal the opening at the hanging device when the cover is wrapped around the engine.

[0011] Wherein, the first tightening part includes a first tightening band fixed on the cover body along the circumferential edge of the opening, and a first fixing band arranged opposite to the first tightening band and fixed on the cover body near the tail nozzle, the free end of the first tightening band and the free end of the first fixing band can overlap with each other; and, the free end of the first tightening band is provided with a first buckle, and the free end of the first fixing band is provided with a first lock buckle which can be plugged into the first buckle, so that the first tightening band and the first fixing band can be fixed together.

[0012] Specifically, the first tightening band includes two free ends, and the two free ends are respectively located on both sides of the extension direction of the opening. After crossing, the two free ends are respectively fixedly connected to the first fixing band having a free end which is fixed on the relatively arranged cover body near the tail nozzle located on both sides of the extension direction of the opening. By crossing the free ends of the first tightening band and fixing them with the free ends of the first fixing band, the problem of reduced fixing performance caused by the free ends of the first tightening band being stuck in the internal structure of the hanging device due to force when the free ends of the first tightening band are directly wrapped around the hanging device is effectively avoided.

[0013] According to some embodiments, the first tightening strap is provided with a first adjusting buckle capable of adjusting the tightness of the first tightening strap. When the free end of the first tightening strap is fixed to the free end of the first fixing strap, the tightness of the connection between the first tightening strap and the first fixing strap can be adjusted through the first adjusting buckle, thereby improving the airtightness of the seal of the opening located at the hanging device.

[0014] According to some embodiments, the first tightening band includes a long tightening band fixed to the cover body along the circumferential edge of the opening and having both ends as free ends, and a short tightening band arranged on the cover body parallel to the long tightening band and having one free end; the first fixing band includes lateral fixing bands fixed to the cover body on both sides of the opening along the extension direction of the opening, and an end-to-end fixing band fixed to the cover body and facing the end of the tail nozzle. By crossing the two free ends of the long tightening band and plugging them into the free ends of the corresponding lateral fixing bands, the opening at the hanging device is sealed, effectively avoiding the problem of the free end of the long tightening band being directly wrapped around the hanging device and being stuck into the internal structure of the hanging device due to force, resulting in a decrease in fixing performance. By plugging and fixing the free end of the short tightening band into the free end of the end-to-end fixing band, the cover body at the tail end of the tail nozzle is tightened, reducing the possibility of the protective cover being torn from the tail by strong winds, thereby improving the wind resistance of the protective cover. In addition, after the cover is installed, the short tightening belt can also tighten the bottom end of the cover to prevent the bottom end of the cover from sagging due to its own gravity, causing a gap between the cover and the hanging device, and foreign objects may enter the interior of the cover through the gap.

[0015] According to some embodiments, the long tightening strap and the short tightening strap are designed to be different colors. By distinguishing by different colors, it is convenient for the maintenance staff to find the correct fixing point of the first tightening strap more quickly, that is, to conveniently achieve the fixed connection between the first tightening strap and the corresponding first fixing strap.

[0016] According to some embodiments, the above-mentioned long tightening strap can also be designed to be composed of two short tightening straps with a free end, and the two short tightening straps are respectively fixed on the cover body corresponding to the free end of the above-mentioned long tightening strap, and the same fixing method is adopted. The free ends of the two short tightening straps are crossed and then respectively plugged and fixed with the free ends of the corresponding side fixing straps, thereby sealing the opening at the hanging device.

[0017] According to some embodiments, the tightening portion further includes a second tightening portion disposed near the tail nozzle, and the second tightening portion is configured to seal a portion of the opening located near the tail nozzle.

[0018] According to some embodiments, the second tightening part includes a hook, a hook plate engaged with the hook, and a shielding part for covering the hook, the hook plate and the opening located at the tail nozzle from the outside. The hooks are arranged on the cover body at equal intervals on one side of the opening located near the tail nozzle, and the hook plate is fixed to the cover body on the other side of the opening located near the tail nozzle through a connecting belt, and the position of the hook plate corresponds one-to-one to the position of the hook. One side of the shielding part is arranged on the outside of the cover body along the extension direction of the opening located near the tail nozzle, and the inner side of the shielding part and the outer side of the cover body facing the shielding part are respectively provided with Velcro that can be bonded to each other. By hooking and fixing the hook and the hook plate and bonding the shielding part and the cover body, the part of the opening located near the tail nozzle is sealed. It has been verified through actual use that this sealing and fixing method avoids the problem of damage or failure caused by repeated use, and can effectively improve the service life of the protective cover.

[0019] According to some embodiments, the second tightening portion includes a zipper fixed to the cover body along the circumferential edge of the opening portion located near the tail nozzle; the zipper seals the portion of the opening portion located near the tail nozzle, and the zipper sealing method is easy to operate and has high installation efficiency.

[0020] According to some embodiments, a hood fixed on the cover body that can shield the tail end of the zipper is provided at the tail end of the zipper, and the two sides of the hood are respectively fixedly connected to the corresponding cover bodies located on both sides of the zipper. The hood is fixedly connected to the tail end of the zipper. The hood can improve the firmness of the connection between the tail end of the zipper and the cover body, and prevent the zipper head from being pulled through from the tail end of the zipper. At the same time, it prevents strong winds from damaging the tail end of the zipper, and prevents strong winds from blowing into the cover body from the tail end of the zipper, thereby reducing the wind resistance of the protective cover.

[0021] The cover body also includes a transition portion located on both sides of the zipper and close to the hanging device. The size of the transition portion gradually decreases along the extension direction of the zipper from the position close to the hanging device. The transition portion can relieve the tension of the zipper near the hanging device, making it convenient to open and tighten the zipper, and at the same time prevent the protective cover from affecting the zipper when taking a ride.

[0022] According to some embodiments, the second tightening portion further includes a second tightening strap and a second fixing strap, which are arranged opposite each other and fixed to the cover body on both sides of the zipper along the extension direction of the zipper, respectively. The free ends of the second tightening strap and the second fixing strap can overlap each other. The free end of the second tightening strap is provided with a second buckle, and the free end of the second fixing strap is provided with a second lock buckle that can be plugged into the second buckle, thereby fixing the second tightening strap and the second fixing strap together. The provision of the second tightening strap and the second fixing strap can improve the tightening degree of the cover body at the tail nozzle, reduce the impact of strong winds on the zipper, and thereby improve wind resistance.

[0023] According to some embodiments, the second tightening strap is provided with a second adjustment buckle capable of adjusting the tightness of the second tightening strap. When the free end of the second tightening strap is secured to the free end of the second fixing strap, the second adjustment buckle can be used to adjust the tightness of the connection between the second tightening strap and the second fixing strap, thereby increasing the tightness of the mask near the tail nozzle and reducing the impact of strong winds on the zipper.

[0024] According to some embodiments, the cover is made of a textile material and is designed to match the overall dimensions of the engine, thereby achieving a snug fit around the entire engine and improving the wind resistance of the protective cover. The textile material is preferably cloth, preferably Oxford fabric, with a count of at least 300D, preferably 420D or higher, to ensure the strength and wind resistance of the cover.

[0025] Alternatively, the cover may be made of materials other than textile materials, such as plastic, synthetic materials or other materials, provided that the cover has good fit to the engine, strong strength and wind resistance.

[0026] According to some embodiments, the cover includes a sewing portion for sewing together at least two adjacent pieces of material, wherein the sewing portion includes a sewing edge of the adjacent materials, a padding portion located to one side of the sewing edge of the adjacent materials, and a stitching thread sewing the sewing edge of the adjacent materials and the padding portion together. Depending on the size of the aircraft engine, the cover can be constructed from a single piece of material or from a plurality of pieces of material spliced ​​together, with the sewing portion enabling the splicing of the plurality of pieces of material.

[0027] According to some embodiments, the stitched edges of the adjacent materials each have a folded edge, and the folded edges are overlapped in a cross-interlocking manner.

[0028] According to some embodiments, the suture includes a first suture and a second suture arranged in parallel with a distance L1 from each other, and the first suture or the second suture is arranged in a direction with more warp or weft threads of the textile material per unit area. It is verified by a tensile strength test that the tensile force that the unit area of ​​textile material can withstand when the suture is arranged in a direction with more warp or weft threads of the textile material per unit area is 1.6 times that of when the suture is arranged in a direction with fewer warp or weft threads of the textile material per unit area.

[0029] According to some embodiments, the width L2 of the padding portion is at least three times the distance L1 between the first and second stitches. Preferably, the width L2 of the padding portion is three times the distance L1 between the first and second stitches. The padding portion is made of the same material as the mask body. Tensile strength testing has shown that, when the first and second stitches are arranged in the direction with the most warp or weft threads per unit area of ​​textile material, the tensile force per unit area of ​​the textile material with the padding portion is 2.1 times greater than that without the padding portion.

[0030] According to some embodiments, the cover is provided with a mesh at a position directly below the engine body, and the mesh is used to prevent water leakage from the engine drain pipe. Preferably, the mesh is a grille mesh.

[0031] According to some embodiments, the inner side of the cover is provided with a flame-retardant coating, preferably a flame-retardant PU coating; and the outer side of the cover is provided with a waterproof coating, preferably a waterproof PU coating, thereby greatly improving the flame retardancy and waterproofness of the protective cover.

[0032] According to some embodiments, the cover is provided with a plurality of reflective strips, which can enhance the visibility and safety of the protective cover. The reflective strips can be provided on the end surface of the cover away from the tail nozzle, or on the sides of the cover. The reflective strips can be designed as a single long strip or as multiple equally spaced short strips. The specific position, number, structure, and color of the reflective strips are not limited and can be provided in any position, number, structure, or color.

[0033] The positive effects of this utility model are:

[0034] This utility model can be widely used for all-inclusive engine protection on various aircraft models. It has a wide range of applications and effectively improves wind resistance performance. The wind resistance level can reach level 12, meeting the engine protection needs in local areas during seasonal strong winds and dust storms. It effectively prevents foreign objects from entering the engine when the aircraft is parked, effectively solving the problem of engine protective covers being easily damaged, ineffective, or blown away by extreme winds, thereby reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The following schematically shows the overall structure of the all-inclusive protective cover according to the preferred embodiment of the present invention;

[0036] Figure 2 The following schematically shows a structural diagram of a fully enclosed protective cover according to a preferred embodiment of the present invention when it is mounted on an aircraft engine from a side perspective;

[0037] Figure 3 Schematically shows a structural diagram of a sewing portion according to a preferred embodiment of the present utility model;

[0038] Figure 4 The following schematically shows the structural diagram of the sewing direction of the suture according to the preferred embodiment of the present invention;

[0039] Figure 5 Schematically shows a partial schematic diagram of the first tightening portion according to a preferred embodiment of the present utility model;

[0040] Figure 6 A partial schematic diagram of the first tightening portion after tightening according to a preferred embodiment of the present utility model is schematically shown;

[0041] Figure 7 Schematically shows a partial schematic diagram of the second tightening portion when the shielding portion is opened according to an embodiment of the present utility model;

[0042] Figure 8 Schematically shows a partial schematic diagram of a hook and a hook plate overlapped according to an embodiment of the present utility model;

[0043] Figure 9 Schematically shows a partial schematic diagram of the shielding portion of the second tightening portion when closed according to an embodiment of the present utility model;

[0044] Figure 10 Schematically shows the attached Figure 9 Cross-sectional view of section AA;

[0045] Figure 11 A partial schematic diagram of a second tightening portion near one end of the hanging device when tightened according to another embodiment of the present invention is schematically shown;

[0046] Figure 12 The figure schematically shows a partial schematic diagram of the second tightening portion away from the end of the hanging device according to another embodiment of the present invention.

[0047] The description of the accompanying drawings is as follows:

[0048] 1. Protective cover; 100. Cover body; 110. Opening; 120. Reflective strip; 130. Mesh; 200. Sewing part; 210. Sewing edge; 211. Folding edge; 220. Padding part; 221. Warp; 222. Weft; 230. Sewing thread; 231. First sewing thread; 232. Second sewing thread; 300. First tightening part; 310. First tightening belt; 311. Long tightening belt; 312. Short tightening belt; 3 20. First fixing strap; 321. Lateral fixing strap; 322. End fixing strap; 330. First adjusting buckle; 400. Second tightening portion; 411. Hook; 412. Hook plate; 413. Connecting strap; 414. Shielding portion; 415. Velcro; 421. Zipper; 422. Hood; 423. Transition portion; 424. Second tightening strap; 425. Second fixing strap; 426. Second adjusting buckle; 500. Hanging device. DETAILED DESCRIPTION

[0049] In the following description, preferred embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0050] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed as having an open, inclusive meaning, that is, to mean "including, but not limited to."

[0051] References throughout this specification to "one embodiment" or "some embodiments" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearance of "in one embodiment" or "some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0052] Furthermore, terms such as "first" and "second" used in the specification and claims are used solely to distinguish between objects for clarity of description and do not limit the size, quantity, or other order of the objects they describe. Directional terms indicate orientations or positional relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this application and do not indicate or imply that the objects referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application.

[0053] The present invention provides a fully enclosed protective cover 1 for an aircraft engine. The engine comprises an engine body and a tail nozzle located at one end of the engine body. The engine is secured to the aircraft via a suspension device 500. The fully enclosed protective cover 1 of the present invention can completely enclose the entire aircraft engine, providing fully enclosed and sealed protection for the aircraft engine.

[0054] As attached Figure 1 and 2 As shown, the protective cover 1 includes a cover body 100, an opening 110, and a tightening portion. The opening 110 is provided on the cover body 100, and the tightening portion is provided around the periphery of the opening 110. When the cover body 100 is wrapped around the engine, the opening 110 is located exactly at the connection between the engine and the suspension device 500, and the tightening portion can seal the opening 110.

[0055] The cover body 100 includes a sewing portion 200 for sewing at least two adjacent pieces of material together. Figure 3 As shown, the sewn portion 200 includes a sewn edge 210 of the adjacent material, a padding portion 220, and a stitching line 230. The padding portion 220 is disposed on one side of the sewn edge 210 of the adjacent material, and the stitching line 230 sews the sewn edge 210 of the adjacent material and the padding portion 220 together. The sewn edges 210 of the adjacent material are each formed with a folded edge 211, and the folded edges 211 are stacked in a cross-interlocking manner. The padding portion 220 is made of the same material as the mask body 100.

[0056] It should be noted that, depending on the size of the aircraft engine, the cover 100 can be made of a single piece of material or a plurality of pieces of material joined together, and the sewing portion 200 can achieve the splicing of the plurality of pieces of material.

[0057] In one embodiment, as shown in the attached Figure 3 and 4 As shown, the stitches 230 include a first stitch 231 and a second stitch 232, which are arranged parallel to each other at a distance L1. The first stitch 231 or the second stitch 232 is arranged in the direction where the number of warp threads 221 or weft threads 222 per unit area of ​​the textile material is greater. Tensile strength tests have shown that the tensile force that a textile material can withstand per unit area when the stitches 230 are arranged in the direction where the number of warp threads 221 or weft threads 222 per unit area of ​​the textile material is greater is 1.6 times greater than when the stitches 230 are arranged in the direction where the number of warp threads 221 or weft threads 222 per unit area of ​​the textile material is less.

[0058] See attached Figure 3The width L2 of the padding portion 220 is at least three times the distance L1 between the first and second stitches 231, 232. Preferably, the width L2 of the padding portion 220 is three times the distance L1 between the first and second stitches 231, 232. Tensile strength tests have shown that, using the same arrangement of the first and second stitches 231, 232 in the direction with the most warps 221 or wefts 222 per unit area of ​​textile material, the tensile force that the padding portion 220 can withstand per unit area of ​​textile material is 2.1 times greater than that without the padding portion 220.

[0059] In one embodiment, see the attached Figure 3 The spacing L1 between the first and second stitches 231, 232 is 6 mm. The width L2 of the padding portion 220 is 18 mm. The first and second stitches 231, 232 are positioned along a line that divides the width of the padding portion 220 into three equal parts to increase the tensile strength of the textile material. The distance L3 between the first or second stitch 231, 232, and the fold line of the folded edge 211 closest to it is 2 mm to avoid affecting the strength of the textile material at the stitching needle hole.

[0060] As attached Figure 5 and 6 As shown, the tightening portion includes a first tightening portion 300 . When the cover 100 is wrapped around the engine, the first tightening portion 300 is disposed around the hanging device 500 and can seal the opening 110 at the hanging device 500 .

[0061] See attached Figure 5 and 6 The first tightening portion 300 includes a first tightening band 310 and a first fixing band 320. The first tightening band 310 is fixed to the housing 100 along the circumferential edge of the opening 110. The first fixing band 320 is disposed opposite the first tightening band 310 and fixed to the housing 100 near the tail nozzle. The free ends of the first tightening band 310 and the first fixing band 320 can overlap each other. The free end of the first tightening band 310 is provided with a first buckle, and the free end of the first fixing band 320 is provided with a first locking buckle. The first locking buckle can be inserted into the first buckle, thereby fixing the first tightening band 310 and the first fixing band 320 together.

[0062] Specifically, the first tightening band 310 includes two free ends, one located on either side of the opening 110. The first fixing band 320 includes one free end. The two free ends of the first tightening band 310 are intersected and fixedly connected to the free ends of the first fixing band 320 fixed to the cover 100 on either side of the opening 110. By intersecting the free ends of the first tightening band 310 and fixing them to the free ends of the first fixing band 320, the problem of reduced fixing performance caused by the free end of the first tightening band 310 being directly wrapped around the hanging device 500 due to force being stuck into the internal structure of the hanging device 500 is effectively avoided.

[0063] In one embodiment, see the attached Figure 5 and 6 The first tightening belt 310 is provided with a first adjusting buckle 330, which can adjust the tightness of the first tightening belt 310. When the free end of the first tightening belt 310 is fixed to the free end of the first fixing belt 320, the tightness of the connection between the first tightening belt 310 and the first fixing belt 320 can be adjusted through the first adjusting buckle 330, thereby improving the sealing performance of the opening 110 located at the hanging device 500.

[0064] In one embodiment, the first tightening strap 310 and the first fixing strap 320 are made of brocade silk to enhance the fixing strength and service life of the first tightening strap 310 and the first fixing strap 320. The first adjustment buckle 330 is a Japanese buckle to facilitate adjustment of the tightness of the connection between the first tightening strap 310 and the first fixing strap 320.

[0065] In one embodiment, see the attached Figure 5 and 6 The first tightening band 310 includes a long tightening band 311 and a short tightening band 312. The long tightening band 311 is fixed to the cover body 100 along the circumferential edge of the opening 110, and both ends of the long tightening band 311 are free ends. The short tightening band 312 is arranged parallel to the long tightening band 311 and is fixed to the cover body 100. The short tightening band 312 has a free end.

[0066] See attached Figure 6 The first fixing belt 320 includes a lateral fixing belt 321 and an end fixing belt 322. The lateral fixing belt 321 is fixed to the cover body 100 on both sides of the opening 110 along the extension direction of the opening 110, and the end fixing belt 322 is fixed to the cover body 100 at the position facing the end of the tail nozzle.

[0067] By intersecting the two free ends of the long tightening strap 311 and then inserting and securing them with the free ends of the corresponding lateral fixing straps 321, the opening 110 of the hanging device 500 is sealed, effectively avoiding the problem of the free end of the long tightening strap 311 being forced into the internal structure of the hanging device 500 when it is directly wrapped around the hanging device 500, resulting in a decrease in fixing performance. By inserting and securing the free end of the short tightening strap 312 with the free end of the end fixing strap 322, the rear end of the cover body 100 at the tail nozzle end is tightened, reducing the possibility of the protective cover being torn from the rear by strong winds and improving the wind resistance of the protective cover. In addition, during use of the protective cover 1, the short tightening strap can also tighten the bottom end of the cover body 100, preventing the bottom end of the cover body 100 from sagging due to its own weight, which could create a gap between the cover body 100 and the hanging device 500, through which foreign objects could enter the cover body.

[0068] In one embodiment, the long tightening strap 311 and the short tightening strap 312 are designed to be different colors. By distinguishing by different colors, it is convenient for the maintenance staff to find the correct fixing point of the first tightening strap 310 more quickly, that is, to conveniently achieve the fixed connection between the first tightening strap 310 and the corresponding first fixing strap 320.

[0069] Alternatively, the above-mentioned long tightening strap can also be designed to be composed of two short tightening straps with a free end, and the two short tightening straps are respectively fixed on the cover body corresponding to the free end of the above-mentioned long tightening strap, and the same cross-fixing method is adopted. The free ends of the two short tightening straps are crossed and respectively plugged and fixed with the free ends of the corresponding side fixing straps, thereby sealing the opening at the hanging device 500.

[0070] As attached Figure 7 As shown, the tightening portion further includes a second tightening portion 400 disposed near the tail nozzle. The second tightening portion 400 can seal the portion of the opening 110 located near the tail nozzle.

[0071] In one embodiment, as shown in the attached Figure 7 and 8 As shown, the second tightening portion 400 includes a hook 411, a hook plate 412, and a shielding portion 414. The hook 411 and the hook plate 412 can engage with each other, and the shielding portion 414 can cover the hook 411, the hook plate 412, and the opening 110 located at the tail nozzle from the outside. The hooks 411 are evenly spaced on one side of the opening 110 located near the tail nozzle on the cover body 100, and the hook plate 412 is fixed to the cover body 100 on the other side of the opening 110 located near the tail nozzle via a connecting belt 413. In addition, the position of the hook plate 412 corresponds to the position of the hook 411.

[0072] One side of the shielding portion 414 is disposed on the outside of the cover body 100 along the extension direction of the opening 110 located near the tail nozzle. Velcro 415 is provided on the inside of the shielding portion 414 and on the outside of the cover body 100 facing the shielding portion 414. The shielding portion 414 is made of the same material as the cover body 100. The portion of the opening 110 located near the tail nozzle is sealed by overlapping and fixing the hook 411 and the hook plate 412, and by bonding the shielding portion 414 to the cover body 100. Actual use has shown that this sealing and fixing method avoids the problem of damage or failure caused by repeated use that occurs with other methods, effectively extending the service life of the protective cover.

[0073] In one embodiment, see the attached Figure 8 The two ends of the hook 411 are fixed to the cover body 100 on one side of the opening 110 near the tail nozzle by sewing, and the hook plate 412 is fixed to one end of the connecting belt 413 by sewing. The other end of the connecting belt 413 is also fixed to the cover body 100 on the other side of the opening 110 near the tail nozzle by sewing. Preferably, the connecting belt 413 is made of brocade silk material to achieve overlapping and fixing of the hook 411 and the hook plate 412, thereby achieving overlapping connection of the cover body 100 on both sides of the opening 110 near the tail nozzle.

[0074] As attached Figure 9 As shown in FIG. 1 , the shielding portion 414 of the second tightening portion 400 is closed, that is, the second tightening portion 400 seals the portion of the opening 110 near the tail nozzle. Figure 10 As shown, the mutually bonded Velcro strips 415 are respectively disposed on the inner side of the shielding portion 414 and the outer side of the cover body 100 facing the shielding portion 414. Specifically, the front side of the Velcro strips 415 is disposed on the inner side of the shielding portion 414, and the back side of the Velcro strips 415 is disposed on the outer side of the cover body 100 facing the shielding portion 414. Alternatively, the back side of the Velcro strips 415 is disposed on the inner side of the shielding portion 414, and the front side of the Velcro strips 415 is disposed on the outer side of the cover body 100 facing the shielding portion 414. The bonded front and back sides of the Velcro strips 415 securely connect the shielding portion 414 and the cover body 100 facing the shielding portion 414.

[0075] In one embodiment, as shown in the attached Figure 11 and 12 As shown, the second tightening portion 400 includes a zipper 421, which is fixed to the cover body 100 along the circumferential edge of the opening 110 near the tail nozzle. The zipper 421 can seal the portion of the opening 110 near the tail nozzle. The zipper 421 sealing method is easy to operate and has high installation efficiency.

[0076] In one embodiment, the cover body 100 further includes transition portions 423, which are disposed on either side of the zipper 421 and proximate the hanging device 500. The dimensions of the transition portions 423 gradually decrease along the extension direction of the zipper 421, beginning near the hanging device 500. The transition portions 423 relieve tension on the zipper 421 near the hanging device 500, facilitating the opening and closing of the zipper 421. Furthermore, the transition portions 423 prevent the zipper 421 from being affected by the movement of the protective cover during travel.

[0077] In one embodiment, see the attached Figure 11 The maximum width of the transition portion 423 is 5 cm, that is, the width of the transition portion 423 near the hanging device 500 is 5 cm. The width of the transition portion 423 gradually decreases from 5 cm along the extending direction of the zipper 421. The transition portion 423 is sewn to the cover body 100 using the sewing process with the sewing portion 200 described above. The transition portion 423 can relieve the tension of the zipper 421 near the hanging device 500, facilitating the opening and tightening of the zipper 421. At the same time, it prevents the zipper 421 from being affected by the protective cover when it is worn while riding.

[0078] In one embodiment, see the attached Figure 12 The tail end of the zipper 421 is provided with a hood 422, which is fixed to the cover body 100 and can shield the tail end of the zipper 421. The two sides of the hood 422 are sewn together with the cover body 100 on both sides of the zipper 421 using the sewing process with the sewing part 200 described above, and the hood 422 and the tail end of the zipper 421 are sewn together using the sewing process with the sewing part 200 described above. The zipper head of the zipper 421 is outside the sewing line between the hood 422 and the zipper 421, thereby improving the firmness of the connection between the tail end of the zipper 421 and the cover body 100, preventing the zipper head from being pulled through from the tail end of the zipper, and preventing strong wind from damaging the tail end of the zipper 421. It also prevents strong wind from blowing into the cover body 100 from the tail end of the zipper 421 and reducing the wind resistance of the protective cover.

[0079] In one embodiment, see the attached Figure 11 The second tightening portion 400 also includes a second tightening strap 424 and a second fixing strap 425. The second tightening strap 424 and the second fixing strap 425 are relatively fixed to the cover body 100 on both sides of the zipper 421 along the extension direction of the zipper 421. The free ends of the second tightening strap 424 and the free ends of the second fixing strap 425 can overlap each other. The free end of the second tightening strap 424 is provided with a second buckle, and the free end of the second fixing strap 425 is provided with a second locking buckle. The second locking buckle can be plugged into the second buckle, thereby fixing the second tightening strap 424 and the second fixing strap 425 together. The provision of the second tightening strap 424 and the second fixing strap 425 can improve the tightening degree of the cover body 100 at the tail nozzle, reduce the impact of strong winds on the zipper 421, and thus improve wind resistance.

[0080] In one embodiment, see the attached Figure 11 The second tightening strap 424 is provided with a second adjustment buckle 426, which can adjust the tightness of the second tightening strap 424. When the free end of the second tightening strap 424 is fixed to the free end of the second fixing strap 425, the second adjustment buckle 426 can be used to adjust the tightness of the connection between the second tightening strap 424 and the second fixing strap 425, thereby increasing the tightness of the mask body 100 near the tail nozzle and reducing the impact of strong winds on the zipper 421.

[0081] In one embodiment, the second tightening strap 424 and the second fixing strap 425 are made of brocade silk to enhance the fixing strength and service life of the second tightening strap 424 and the second fixing strap 425. The second adjustment buckle 426 is a Japanese buckle to facilitate adjusting the tightness of the connection between the second tightening strap 424 and the second fixing strap 425.

[0082] In one embodiment, see the attached Figure 2 The cover 100 is provided with a mesh 130 at a position directly below the engine body, and the mesh 130 is used to prevent water leakage from the drain pipe of the engine. Preferably, the mesh 130 is a grille mesh.

[0083] In one embodiment, the cover 100 is made of textile material, and the size of the cover 100 matches the overall size of the engine, so that it can achieve a close-fitting covering of the entire engine and improve the wind resistance of the protective cover.

[0084] Among them, the textile material is preferably cloth, and the cloth is preferably Oxford cloth fabric. The count of Oxford cloth fabric is at least 300D, and the count is preferably 400D and above to ensure the strength and wind resistance of the cover body 100.

[0085] Alternatively, the cover 100 may be made of materials other than textile materials, such as plastic, synthetic materials or other materials, provided that the cover 100 has good fit and wind resistance to the engine.

[0086] In one embodiment, the inner side of the cover 100 is provided with a flame-retardant coating, preferably a flame-retardant PU coating. The outer side of the cover 100 is provided with a waterproof coating, preferably a waterproof PU coating. This greatly improves the flammability and waterproof properties of the protective cover.

[0087] In one embodiment, see the attached Figure 1 , a reflective strip 120 is designed on the side of the cover body 100. Figure 2The end surface of the cover body 100 away from the tail nozzle is designed with multiple reflective strips 120 distributed at equal intervals. The reflective strips 120 can improve the visibility and safety of the protective cover.

[0088] It should be noted that the reflective strips 120 can be designed on the end surface of the housing 100 away from the exhaust nozzle, or on the surrounding sides of the housing 100. The reflective strips 120 can be designed as a single long strip or as multiple equally spaced short strips. The specific location, number, structure, and color of the reflective strips 120 are not limited and can be in any location, number, structure, or color.

[0089] The protective cover 1 is installed as follows: first, the cover body 100 is placed on the aircraft engine through the opening 110; then, the second tightening portion 400 seals the portion of the opening 110 near the tail nozzle, either by tightening the hook 411 and the hanging plate in combination with the shielding portion 414, or by tightening the zipper 421 in combination with the second tightening strap 424 and the second fixing strap 425; finally, the first tightening portion 300 seals the opening 110 at the hanging device 500, by tightening the first tightening strap 310 and the first fixing strap 320 in an overlapping manner, thereby achieving fully enclosed protection for the aircraft engine. When the aircraft is parked or undergoing maintenance on the ground and encountering strong winds and dust, the protective cover effectively prevents foreign objects from entering the engine interior. At the same time, the wind resistance performance of the protective cover is greatly improved, with a wind resistance rating of up to 12, meeting the engine protection requirements in strong winds and dusty weather, effectively solving the problem of the engine protective cover being easily damaged, ineffective, or blown away by extreme winds, thereby reducing costs and increasing efficiency.

[0090] It should be noted that the features or feature combinations according to the present invention described above and the features and feature combinations mentioned in the drawings and / or only shown in the drawings can be used not only in the corresponding combinations given, but also in other combinations or alone without departing from the scope of the present invention.

[0091] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the scope of the described embodiments. Those skilled in the art will understand that various changes and modifications can be made based on the teachings of the present invention, and such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A full-enclosed protective cover for an aircraft engine, the engine comprising an engine body and a tail nozzle located at one end of the engine body, characterized in that: The protective cover comprises: A cover body, wherein the cover body is designed to completely cover the entire aircraft engine; an opening, the opening being provided on the cover and being configured such that when the cover is wrapped around the engine, the opening is located at a connection between the engine and a suspension device for fixing the engine to the aircraft; and The tightening portion is arranged around the periphery of the opening portion and is designed to seal the opening portion when the cover is wrapped around the engine.

2. The all-inclusive protective cover for an aircraft engine according to claim 1, characterized in that: The tightening portion includes a first tightening portion, which is configured to be located around the hanging device and to seal the opening at the hanging device when the cover is wrapped around the engine. Wherein, the first tightening portion includes a first tightening belt fixed to the cover body along the circumferential edge of the opening, and a first fixing belt arranged opposite to the first tightening belt and fixed to the cover body near the tail nozzle, and the free end of the first tightening belt and the free end of the first fixing belt can overlap each other; and The free end of the first tightening belt is provided with a first buckle, and the free end of the first fixing belt is provided with a first locking buckle which can be plugged into the first buckle, so that the first tightening belt and the first fixing belt can be fixed together.

3. The all-inclusive protective cover for an aircraft engine according to claim 2, characterized in that: The first tightening belt is provided with a first adjusting buckle capable of adjusting the tightness of the first tightening belt.

4. The all-inclusive protective cover for an aircraft engine according to claim 2, characterized in that: The first tightening belt includes a long tightening belt fixed on the cover body along the circumferential edge of the opening and having both ends as free ends, and a short tightening belt arranged on the cover body in parallel with the long tightening belt and having one free end; The first fixing belt includes lateral fixing belts fixed on both sides of the opening along the extension direction of the opening and an end fixing belt fixed on the cover body and facing the end of the tail nozzle, wherein the opening at the hanging device is sealed by crossing the two free ends of the long tightening belt and plugging and fixing them with the free ends of the corresponding lateral fixing belts, and plugging and fixing the free end of the short tightening belt with the free end of the end fixing belt; The long tightening belt and the short tightening belt are designed to be different colors.

5. The all-inclusive protective cover for an aircraft engine according to claim 2, characterized in that: The tightening portion further includes a second tightening portion disposed near the tail nozzle, and the second tightening portion is configured to seal a portion of the opening near the tail nozzle.

6. The all-inclusive protective cover for an aircraft engine according to claim 5, characterized in that: The second tightening portion includes a hook, a hook plate engaged with the hook, and a shielding portion for covering the hook, the hook plate and the opening at the tail nozzle from the outside; The hooks are arranged on the cover at equal intervals on one side of the opening near the tail nozzle, and the hook plates are fixed to the cover on the other side of the opening near the tail nozzle by connecting belts, and the positions of the hook plates correspond to the positions of the hooks one by one; and One side of the shielding portion is arranged on the outside of the cover body along the extension direction of the opening portion located near the tail nozzle, and the inner side of the shielding portion and the outer side of the cover body facing the shielding portion are respectively provided with Velcro that can adhere to each other.

7. The all-inclusive protective cover for an aircraft engine according to claim 5, characterized in that: The second tightening portion includes a zipper fixed to the cover along the circumferential edge of the opening portion located near the tail nozzle; Wherein, a hood fixed on the cover body and capable of shielding the tail end of the zipper is provided at the tail end of the zipper; and The cover body further includes transition portions located on both sides of the zipper and close to the hanging device, and the size of the transition portions gradually decreases from the location close to the hanging device along the extending direction of the zipper.

8. The all-inclusive protective cover for an aircraft engine according to claim 7, characterized in that: The second tightening portion further includes a second tightening belt and a second fixing belt which are arranged opposite to each other and fixed to the cover body on both sides of the zipper along the extension direction of the zipper, and the free end of the second tightening belt and the free end of the second fixing belt can overlap each other; and The free end of the second tightening belt is provided with a second buckle, and the free end of the second fixing belt is provided with a second lock buckle that can be plugged into the second buckle, so that the second tightening belt and the second fixing belt can be fixed together.

9. The all-inclusive protective cover for an aircraft engine according to claim 8, characterized in that: The second tightening belt is provided with a second adjusting buckle capable of adjusting the tightness of the second tightening belt.

10. The all-inclusive protective cover for an aircraft engine according to claim 1, characterized in that: The cover is made of textile material, and the size of the cover is designed to match the overall size of the engine, so as to achieve a close-fitting covering of the entire engine.

11. The all-inclusive protective cover for an aircraft engine according to claim 10, characterized in that: The cover body includes a sewing portion for sewing at least two adjacent materials together, wherein the sewing portion includes a sewing edge of the adjacent materials, a padding portion located on one side of the sewing edge of the adjacent materials, and a stitch that sews the sewing edge of the adjacent materials and the padding portion together.

12. The all-inclusive protective cover for an aircraft engine according to claim 11, characterized in that: The seamed edges of the adjacent materials each have a folded edge, and the folded edges are overlapped in a cross-interlocking manner.

13. The all-inclusive protective cover for an aircraft engine according to claim 11, characterized in that: The stitches include a first stitch and a second stitch arranged in parallel at a distance L1 from each other, and the first stitch or the second stitch is arranged in a direction with a larger number of warp or weft threads per unit area of ​​the textile material; The width L2 of the pad portion is at least three times the distance L1 between the first stitch line and the second stitch line.

14. The all-inclusive protective cover for an aircraft engine according to claim 1, characterized in that: The cover is provided with mesh holes at a position directly facing the lower side of the engine body.

15. The all-inclusive protective cover for an aircraft engine according to claim 1, characterized in that: The inner side of the cover body is provided with a flame retardant coating, and the outer side of the cover body is provided with a waterproof coating.

16. The all-inclusive protective cover for an aircraft engine according to claim 1, characterized in that: A plurality of reflective strips are arranged on the cover body.

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