Aero-engine nacelle

Abstract

The invention relates to the field of engine nacelles, and discloses an aero-engine nacelle which comprises a nacelle body, a rectifying ring installed at the front end of the nacelle body, air compression blades and a rectifying cone, and a light reflecting mechanism is installed in an air inlet in the front end of the rectifying ring; the air inlet end of the nacelle body is provided with the multiple annularly-distributed reflectors used for reflecting sunlight to birds towards the front end of the rectifying ring, driving the birds away from the air inlet in the front end of the nacelle body and preventing the birds from impacting air compression blades in the nacelle body, and the outer surfaces of the reflectors protrude outwards, so that the light reflection area of the outer surfaces is increased, and the light reflection effect is improved. The multiple reflectors reflect sunlight in a large range to expel birds at the front end of the nacelle body, the multiple reflectors are obliquely arranged, the sunlight is concentrated and reflected to the axis direction of the rectifying ring, the light gathering effect is achieved, the temperature of the axis position of the rectifying ring is increased, and in the snow season, a certain snow melting effect can be achieved on the central axis position of the rectifying ring; and the influence of snow on the air compression blade is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine nacelle, in particular to an aero-engine nacelle. BACKGROUND

[0002] The aero-engine nacelle is a streamlined component separated from the fuselage of the aircraft, used for placing the engine, providing the engine with an inlet and exhaust passage and a smooth aerodynamic shape, and protecting the related systems of the engine. It is an important part of the aircraft propulsion system, including the fairing ring at the front end of the nacelle, the compression blade for air compression, the fairing cone and other parts.

[0003] During the air inlet operation of the aero-engine nacelle, the air inlet position at the front end of the nacelle causes the compression blade inside the front end of the nacelle to collide and be damaged when birds appear. To prevent the birds from colliding with the compression blade, the existing engine nacelle is provided with an intercepting mechanism occupying a large space at the front end of the nacelle, which affects the air inlet inside the nacelle. In addition, in the snow season, snow is easy to enter and cause the compression blade to freeze, affecting the rotation of the compression blade to compress air.

[0004] Therefore, the aero-engine nacelle is provided to solve the above problems. SUMMARY

[0005] In order to overcome the above technical problems, the purpose of the present application is to provide an aero-engine nacelle, and the purpose of the present application can be achieved by the following technical scheme:

[0006] An aero-engine nacelle, comprising a nacelle body, a fairing ring installed at the front end of the nacelle body, a compression blade and a fairing cone, a light reflecting mechanism is installed in the air inlet at the front end of the fairing ring, the light reflecting mechanism comprises a support plate, a plurality of support plates are distributed in a ring shape and are rotationally connected to the inner side of the fairing ring, an air guide plate is fixedly inclined at the end of each support plate, an arc-shaped air guide portion is arranged on the outer side of the air guide plate, and a light reflecting plate for driving birds is fixed to the outer side of each support plate.

[0007] The outer side of the light reflecting plate is arc-shaped and protruding, guide wheels one and two are rotationally connected to the back of the support plate, a shifting rod is slidingly inserted between the guide wheels one and two, and an L-shaped fixed rod is fixedly connected to one end of the shifting rod.

[0008] A driving mechanism for shifting the light reflecting plate to adjust the light reflecting angle is installed in the fairing ring, and the driving mechanism is connected to the fixed rod.

[0009] A snow melting mechanism for warming and melting snow at the front end of the nacelle body is arranged in the fairing ring.

[0010] Preferably, the driving mechanism comprises a mounting frame fixed to the inner wall of the upper end of the rectifier ring, the bottom end of the mounting frame is fixed with a support seat arranged transversely and in L-shaped structure, one end of the support seat is rotatably connected with a rotating wheel, one end of the rotating wheel is fixed with a gear, the inner wall of the rectifier ring is rotatably connected with a rotating ring, the upper end of the inner side of the rotating ring is fixed with a gear rack in annular structure, the gear is meshingly connected with the gear rack, and one end of the fixed rod is fixedly connected with the rotating ring.

[0011] Preferably, the inside of the mounting frame is fixedly installed with a motor, the mounting frame is rotatably connected with a rotating wheel, a belt is connected between the output shaft of the motor and the rotating wheel, the end of the gear is fixedly connected with the rotating wheel, and the diameter of the belt pulley of the output shaft of the motor is smaller than the diameter of the rotating wheel.

[0012] Preferably, the snow melting mechanism comprises a support frame fixed to the inner side of the upper end of the rectifier ring, an electric resistance fixed in the support frame, a positive electrode wire and a negative electrode wire electrically connected to one end of the electric resistance, an electric heating sheet fixed to the end of the positive electrode wire, the electric heating sheet arranged in the inside of the rectifier ring and located between the gear and the pushing rod, the electric heating sheet in spiral structure close to the edge of the inner side of the rectifier ring, and a power line electrically connected to the other end of the electric resistance.

[0013] Preferably, the snow melting mechanism further comprises a rotating seat rotatably connected to the outer surface of the electric resistance, and the outer surface of the rotating seat is fixed with three heat dissipation blades.

[0014] Preferably, the rectifier ring is provided with a buffering mechanism, the buffering mechanism comprises a plurality of fixed seats fixed in annular structure on the inner side of the rectifier ring, each support plate is fixed with a rotating rod at the end, the other end of the rotating rod is rotatably connected with a swing seat, one end of the swing seat is rotatably connected with one side of the fixed seat, the end of the fixed seat is rotatably connected with a torsional spring rotating shaft, and the end of the swing seat is fixedly connected with the torsional spring rotating shaft.

[0015] Preferably, the buffering mechanism further comprises a sliding block, the fixed seat is provided with a sliding groove with an open end on one side, the sliding block is slidably connected in the inside of the sliding groove, a spring shock absorber is fixedly connected between one side of the sliding block and the inner wall of the fixed seat, the end of the rotating shaft is rotatably connected with a connecting rod, and the other end of the connecting rod is rotatably connected with the sliding block.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The application is characterized in that a plurality of reflective plates are arranged in a ring shape at the air inlet end of the nacelle body, which are used to reflect sunlight to the front end of the fairing ring to drive birds away from the air inlet end of the nacelle body, so as to avoid birds from colliding with the pressure blade inside the nacelle body. The outer surface of the reflective plate is arc-shaped and protruding, which increases the reflective area of the outer surface. The plurality of reflective plates reflect sunlight in a large range to drive birds away from the front end of the nacelle body. A guide plate is arranged on one side of the reflective plate, and an arc-shaped guide part is arranged on one side of the guide plate to guide air to the pressure blade. In addition, the plurality of reflective plates are arranged in an inclined manner, which concentrates the reflection of sunlight to the direction of the axis of the fairing ring, has a light condensing effect, and increases the temperature at the position of the axis of the fairing ring. In the snow season, the snow melting effect can be achieved at the position of the central axis of the fairing ring, and the influence of snow on the pressure blade is reduced.

[0018] 2. The motor is powered in forward and reverse rotation to drive the rotating ring to reciprocate at a small amplitude inside the fairing ring, drive the fixed rod to move together, and make each toggle lever reciprocate together. In the reciprocating process of the toggle lever, the guide wheels one and two inside the support plate drive the support plate to reciprocate at a small amplitude together, and drive each reflective plate to reciprocate together, so as to adjust the reflection angle of each reflective plate and the gap between adjacent support plates, which is used to drive birds away from the air inlet end of the nacelle body in real time, and prevent birds from colliding with the pressure blade inside the nacelle body.

[0019] 3. The electric heating sheet is powered to convert electric energy into heat energy to heat and melt snow inside the fairing ring. In combination with the sunlight reflecting light condensing box of each reflective plate, the snow at the front end of the nacelle body is heated and melted to prevent snow from adhering to the pressure blade and being frozen, and to avoid damage to the pressure blade. The spiral-shaped electric heating sheet is arranged near the edge position of the inner wall of the fairing ring to reduce the influence of air intake at the position of the fairing ring assembly. In addition, the heat dissipation blade is rotated by wind during the air intake process of the nacelle body, which concentrates and stirs the air flow near the resistor to achieve a rapid heat dissipation effect near the resistor, avoids damage caused by overhigh temperature of the resistor, and enables the electric heating sheet to work normally.

[0020] 4. When the reflective plate rotates inside the fairing ring under the impact of rain and snow, the rotating rod and the swing seat rotate inside the fairing ring on one side of the fixed seat, drive the support plate to rotate together, and make the torsional spring rotating shaft rotate to generate elastic force, which buffers the reflective plate. After the swing seat rotates, the connecting rod moves, and under the action of the end part of the connecting rod, the sliding block slides in the sliding groove to compress the spring shock absorber, which further buffers the reflective plate through the action of the spring shock absorber, avoids damage of the reflective plate caused by excessive impact force of rain and snow, and ensures the service life of the reflective plate. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below with reference to the drawings.

[0022] Figure 1The overall structure schematic diagram provided by the present application;

[0023] Figure 2 The present application Figure 1 The rectifier ring internal schematic diagram;

[0024] Figure 3 The present application rectifier ring, rotating ring schematic diagram;

[0025] Figure 4 The present application Figure 3 The A part enlarged schematic diagram shown in the figure;

[0026] Figure 5 The present application rotating ring, snow melting mechanism schematic diagram;

[0027] Figure 6 The present application Figure 5 The snow melting mechanism schematic diagram shown in the figure;

[0028] Figure 7 The present application rotating ring schematic diagram;

[0029] Figure 8 The present application Figure 7 The B part enlarged schematic diagram shown in the figure;

[0030] Figure 9 The present application light reflection mechanism, buffer mechanism schematic diagram;

[0031] Figure 10 The present application Figure 9 The buffer mechanism schematic diagram shown in the figure.

[0032] In the figure: 1, nacelle body; 101, rectifier ring; 102, rectifier cone; 103, air pressure blade; 2, light reflection mechanism; 21, support plate; 22, light reflection plate; 23, guide plate; 24, support shaft; 25, arc-shaped guide part; 26, push rod; 27, guide wheel one; 28, fixed rod; 29, guide wheel two; 3, driving mechanism; 31, rotating ring; 32, motor; 33, mounting frame; 34, belt; 35, gear; 36, rack; 37, support seat; 38, rotating wheel; 4, snow melting mechanism; 41, electric heating sheet; 42, support frame; 43, resistor; 44, power line; 45, rotating seat; 46, heat dissipation blade; 47, positive line; 48, negative line; 5, buffer mechanism; 51, rotating rod; 52, fixed seat; 53, swing seat; 54, sliding block; 55, connecting rod; 56, torsion spring rotating shaft; 57, spring shock absorber; 58, sliding groove. DETAILED DESCRIPTION

[0033] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should belong to the protection scope of the present application.

[0034] Embodiment one

[0035] Please refer to Figures 1 to 10As shown, an aircraft engine nacelle includes a nacelle body 1, a fairing ring 101, a compressor blade 103 and a fairing cone 102 installed at the front end of the nacelle body 1, a light reflection mechanism 2 is installed in the air inlet at the front end of the fairing ring 101, the light reflection mechanism 2 includes a support plate 21, a plurality of support plates 21 are distributed in a ring shape and are rotatably connected to the inner side of the fairing ring 101, the support plate 21 is rotatably connected with a support shaft 24, the support shaft 24 is fixedly connected with the fairing ring 101, the end of each support plate 21 is obliquely fixed with a guide plate 23, the outer side of the guide plate 23 is provided with an arc-shaped guide part 25, and the outer side of each support plate 21 is fixed with a light reflection plate 22 for driving birds; in operation, the air inlet end of the nacelle body 1 for the aircraft engine is provided with a plurality of light reflection plates 22 distributed in a ring shape, which is used to reflect sunlight to the front end of the fairing ring 101 to birds, to drive birds away from the air inlet end of the nacelle body 1, to avoid birds from hitting the compressor blade 103 inside the nacelle body 1, and the outer convex arc-shaped structure (the curvature radius is optimized through aerodynamics) of the light reflection plate 22 not only enlarges the reflection area, but also scatters light to a 120° wide-angle range through the curved surface reflection principle, covering a 360° ring-shaped area at the front end of the nacelle, through fluid simulation optimization, the airflow forms controllable turbulence when passing through, which not only reduces the air inlet resistance of the compressor blade 103, but also smoothly guides the airflow to the compressor blade 103 through the arc-shaped guide part 25 (the curvature matches the inlet angle of the compressor blade 103) of the guide plate 23, reduces the air inlet turbulence, makes the plurality of light reflection plates 22 reflect sunlight in a large range to drive birds away from the front end of the nacelle body 1, there is a gap between adjacent light reflection plates 22 for air inlet inside the nacelle body 1, the light reflection plate 22 is close to the inner edge position of the fairing ring 101, reduces the space occupied inside the fairing ring 101, leaves a large air inlet in the middle part of the fairing ring 101, reduces the influence of the air inlet inside the nacelle body 1, and one side of the light reflection plate 22 is provided with the guide plate 23, one side of the guide plate 23 is provided with the arc-shaped guide part 25, the air is guided to the compressor blade 103, in addition, the inclination angle design (15°-30° with the axis of the fairing ring 101) of the light reflection plate 22 makes the reflected light focus on the central axis of the fairing ring 101, forms a local spotlight heat area (temperature rises by 5-8℃), and cooperates with the snow melting mechanism 4 to quickly melt the snow at the air inlet, avoids snow particles from being sucked into the surface of the compressor blade 103 and causing icing, resulting in dynamic balance failure or aerodynamic performance decline of the compressor blade 103, the plurality of light reflection plates 22 are obliquely arranged, sunlight is concentrated and reflected to the axis direction of the fairing ring 101, has a spotlight effect, the temperature at the axis position of the fairing ring 101 is increased, in the snow season, the central axis part of the fairing ring 101 can have a certain snow melting effect, reduces the influence of snow on the compressor blade 103, further, by controlling the rotation of each support plate 21 together, adjusting the reflection direction of the light reflection plate 22 and the gap between adjacent support plates 21, birds at different positions in front of the nacelle body 1 and the internal air inlet effect can be driven in real time;

[0036] Further supplement, the reflector can adopt PET film or PVC material, through special laser treatment process, the surface forms a regular or irregular pattern of reflection layer, under the light irradiation, the laser reflector can produce colorful, flickering light, has strong deterrent effect on birds, to drive away the birds.

[0037] The rectifier ring 101 is internally provided with a drive mechanism 3 for adjusting the reflection angle of the reflector 22 by driving the reflector 22 to swing.

[0038] The rectifier ring 101 is internally provided with a snow melting mechanism 4 for warming and melting snow at the front end of the nacelle body 1.

[0039] Embodiment two

[0040] Referring to Figure 3 , Figure 4 The drive mechanism 3 includes a mounting frame 33 fixed to the inner wall of the upper end of the rectifier ring 101, the bottom end of the mounting frame 33 is fixed with a horizontally arranged L-shaped support seat 37, the support seat 37 is rotatably connected with a rotating wheel 38, one end of the rotating wheel 38 is fixed with a gear 35, the inner wall of the rectifier ring 101 is rotatably connected with a rotating ring 31, the upper end of the inner side of the rotating ring 31 is fixed with an annular gear rack 36, the gear 35 is meshingly connected with the gear rack 36, one end of the fixed rod 28 is fixedly connected with the rotating ring 31, the outer side of the reflector 22 is arc-shaped and protruding, the back of the support plate 21 is rotatably connected with a guide wheel one 27 and a guide wheel two 29, a driving rod 26 is slidingly inserted between the guide wheel one 27 and the guide wheel two 29, one end of the driving rod 26 is fixedly connected with an L-shaped fixed rod 28, a motor 32 is fixedly installed in the mounting frame 33, the mounting frame 33 is rotatably connected with the rotating wheel 38, a belt 34 is connected between the output shaft of the motor 32 and the rotating wheel 38, the end of the gear 35 is fixedly connected with the rotating wheel 38, the diameter of the belt 34 wheel of the output shaft of the motor 32 is smaller than the diameter of the rotating wheel 38, so as to drive the gear 35 to rotate at low speed; when it is necessary to adjust the reflection angle of the reflector 22, the motor 32 is energized to rotate in forward and reverse directions (the motor 32 is a stepping motor) to drive the belt 34 to rotate, thereby driving the gear 35 to rotate in forward and reverse directions at a small amplitude, driving the rotating ring 31 to reciprocatingly rotate at a small amplitude inside the rectifier ring 101, driving the fixed rod 28 to move together during the rotation of the rotating ring 31, so as to drive each driving rod 26 to reciprocatingly rotate, driving the guide wheel one 27 and the guide wheel two 29 on the inner side of the support plate 21 to reciprocatingly rotate, thereby driving the support plate 21 to reciprocatingly rotate at a small amplitude, driving each reflector 22 to reciprocatingly rotate, so as to adjust the reflection angle of each reflector 22 and the gap between adjacent support plates 21, for driving away the birds near the air inlet at the front end of the nacelle body 1 in real time, preventing the birds from colliding with the pressure blade 103 inside the nacelle body 1.

[0041] In this embodiment, in order to improve the snow melting effect, referring to Figure 4 , Figure 5 , Figure 6 , the snow melting mechanism 4 comprises a support frame 42 fixed on the inner side of the rectifier ring 101, the support frame 42 is internally fixed with an electric resistance 43, one end of the electric resistance 43 is electrically connected with a positive line 47 and a negative line 48, the end of the positive line 47 is fixed with an electric heating sheet 41, the electric heating sheet 41 is arranged inside the rectifier ring 101 and between the gear 35 and the poking rod 26, the electric heating sheet 41 is in a spiral structure and close to the inner side edge of the rectifier ring 101, the other end of the electric resistance 43 is electrically connected with a power line 44, the snow melting mechanism 4 further comprises a rotating seat 45, the rotating seat 45 is rotatably connected to the outer surface of the electric resistance 43, the outer surface of the rotating seat 45 is fixed with three heat dissipation blades 46; when snow melting is needed in the snow season, the power line 44 can be powered, the current passes through the electric resistance 43 and then the positive line 47, and then the current passes through the electric heating sheet 41 and then flows through the negative line 48 into the electric resistance 43, so that the electric heating sheet 41 is powered, converts the electric energy into heat energy to warm up, heats the inside of the rectifier ring 101 to melt the snow, cooperates with each reflecting plate 22 to reflect the sunlight to the snow at the front end of the short body 1 to warm up and melt the snow, prevents the snow from adhering to the air pressure blade 103 to be iced, avoids the damage of the air pressure blade 103, the spiral electric heating sheet 41 is arranged close to the inner wall edge of the rectifier ring 101, reduces the air inlet influence of the rectifier ring 101 assembly part, in addition, the heat dissipation blades 46 are blown and rotated by the wind in the air inlet process of the short body 1, concentrate and stir the airflow near the electric resistance 43, separately plays a rapid heat dissipation effect near the electric resistance 43, avoids the damage of the electric resistance 43 due to the overhigh temperature, and makes the electric heating sheet 41 normally work.

[0042] Embodiment three

[0043] On the basis of embodiment one, in order to provide the buffering effect of the reflecting plate 22, referring to Figures 7 to 10The rectifying ring 101 is provided with a buffer mechanism 5, the buffer mechanism 5 comprises a plurality of fixed seats 52 which are fixed in the inside of the rectifying ring 101 in a ring shape, each end of the support plate 21 is fixed with a rotating rod 51, the other end of the rotating rod 51 is rotatably connected with a swing seat 53, one end of the swing seat 53 is rotatably connected with one side of the fixed seat 52, the end of the fixed seat 52 is rotatably connected with a torsional spring rotating shaft 56, the end of the swing seat 53 is fixedly connected with the torsional spring rotating shaft 56, the buffer mechanism 5 further comprises a sliding block 54, the fixed seat 52 is provided with a sliding groove 58 with an open end on one side, the sliding block 54 is slidably connected in the inside of the sliding groove 58, a spring shock absorber 57 is fixedly connected between one side of the sliding block 54 and the inner wall of the fixed seat 52, the end of the rotating shaft is rotatably connected with a connecting rod 55, the other end of the connecting rod 55 is rotatably connected with the sliding block 54; when the reflecting plate 22 is impacted by rain and snow in the rain and snow weather, the reflecting plate 22 rotates to the inside of the rectifying ring 101 under the impact of rain and snow, the rotating rod 51 and the swing seat 53 rotate to the inside of the rectifying ring 101 on one side of the fixed seat 52, the support plate 21 is driven to rotate, the torsional spring rotating shaft 56 is rotated to generate elastic force, the reflecting plate 22 is buffered, the connecting rod 55 is moved after the swing seat 53 is rotated, the sliding block 54 is slidably compressed in the sliding groove 58 under the action of the end of the connecting rod 55, the reflecting plate 22 is further buffered by the spring shock absorber 57, the reflecting plate 22 is prevented from being damaged by the rain and snow impact, the life of the reflecting plate 22 is ensured, the reflecting plate 22 is beneficial to the reflecting and bird repelling work, the support plate 21 and the swing seat 53 are rotatably connected through the rotating rod 51, so that the support plate 21 can be rotated on the swing seat 53 to adjust the reflecting angle.

[0044] Working principle: the air intake end of the nacelle body 1 of the aircraft engine is provided with a plurality of ring-shaped reflective plates 22 for reflecting sunlight to the front end of the fairing ring 101 to drive birds away from the air intake of the front end of the nacelle body 1, avoid birds hitting the compressor blades 103 inside the nacelle body 1, and the side of the reflective plate 22 is provided with a guide plate 23, and the side of the guide plate 23 is provided with an arc-shaped guide part 25 for guiding air to the compressor blades 103. In addition, the plurality of reflective plates 22 are inclined to reflect sunlight to the axis direction of the fairing ring 101, have a light condensing effect, and make the temperature of the axis position of the fairing ring 101 rise. In the snow season, the center axis part of the fairing ring 101 can have a certain snow melting effect. The motor 32 is energized in forward and reverse rotation to drive the rotating ring 31 to reciprocate at a small amplitude inside the fairing ring 101, drive the fixed rod 28 to move together, and make each toggle lever 26 reciprocate together. In the reciprocating process of the toggle lever 26, the guide wheels one 27 and two 29 on the inner side of the toggle support plate 21 make the support plate 21 reciprocate at a small amplitude together, drive each reflective plate 22 to reciprocate together, so as to adjust the reflection angle of each reflective plate 22 and the gap between adjacent support plates 21, for real-time driving of birds near the air intake of the front end of the nacelle body 1, to prevent birds from hitting the compressor blades 103 inside the nacelle body 1. When the reflective plate 22 rotates inwardly to the fairing ring 101 under the impact of rain and snow, the rotating rod 51 and the swing seat 53 rotate inwardly to the fairing ring 101 on one side of the fixed seat 52, drive the support plate 21 to rotate together, and make the torsional spring shaft 56 rotate to generate elastic force, buffer the reflective plate 22, and after the swing seat 53 rotates, the connecting rod 55 moves, under the action of the end part of the connecting rod 55, pushes the sliding block 54 to slide in the sliding groove 58 to compress the spring shock absorber 57, and the spring shock absorber 57 further buffers the reflective plate 22 to avoid damage of the reflective plate 22 caused by excessive impact of rain and snow, and ensures the service life of the reflective plate 22.

[0045] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The present application is selected and described in detail to better explain the principles and practical application of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. An aircraft engine nacelle, comprising a nacelle body (1), a fairing ring (101), compressor blades (103), and a fairing cone (102) mounted on the front end of the nacelle body (1), characterized in that, A reflector (2) is installed in the air inlet at the front end of the rectifier ring (101). The reflector (2) includes a support plate (21). Several support plates (21) are arranged in a ring and rotatably connected to the inner side of the rectifier ring (101). Each support plate (21) has a guide plate (23) fixed at its end. The outer side of the guide plate (23) is provided with an arc-shaped guide part (25). Each support plate (21) has a reflector (22) for bird deterrence fixed on its outer side. The reflector (22) has an arc-shaped protrusion on the outside. The back of the support plate (21) is rotatably connected to a guide wheel (27) and a guide wheel (29). A lever (26) is slidably inserted between the guide wheel (27) and the guide wheel (29). One end of the lever (26) is fixedly connected to a fixed rod (28) distributed in an L shape. The rectifier ring (101) is equipped with a drive mechanism (3) for adjusting the reflection angle by swinging the reflector (22), and the drive mechanism (3) is connected to the fixing rod (28). The rectifier ring (101) is equipped with a snow melting mechanism (4) for heating and melting snow at the front end of the nacelle body (1).

2. The aircraft engine nacelle according to claim 1, characterized in that, The drive mechanism (3) includes a mounting bracket (33), which is fixed to the inner wall of the upper end of the rectifier ring (101). The bottom end of the mounting bracket (33) is fixed with a horizontally arranged support base (37) in an L-shape. The support base (37) is rotatably connected to a rotating wheel (38). One end of the rotating wheel (38) is fixed with a gear (35). The inner wall of the rectifier ring (101) is rotatably connected to a rotating ring (31). The inner side of the upper end of the rotating ring (31) is fixed with a rack (36) in an annular structure. The gear (35) meshes with the rack (36). One end of the fixed rod (28) is fixedly connected to the rotating ring (31).

3. The aircraft engine nacelle according to claim 2, characterized in that, The mounting bracket (33) has a motor (32) fixedly installed inside. The mounting bracket (33) is rotatably connected to a wheel (38). A belt (34) is connected between the output shaft of the motor (32) and the wheel (38). The end of the gear (35) is fixedly connected to the wheel (38). The diameter of the belt (34) pulley of the output shaft of the motor (32) is smaller than the diameter of the wheel (38).

4. An aircraft engine nacelle according to claim 3, characterized in that, The snow melting mechanism (4) includes a support frame (42), which is fixed on the upper inner side of the rectifier ring (101). A resistor (43) is fixed inside the support frame (42). One end of the resistor (43) is electrically connected to a positive wire (47) and a negative wire (48). An electric heating element (41) is fixed at the end of the positive wire (47). The electric heating element (41) is located inside the rectifier ring (101) and between the gear (35) and the lever (26). The electric heating element (41) has a spiral structure and is close to the inner edge of the rectifier ring (101). The other end of the resistor (43) is electrically connected to a power supply line (44).

5. An aircraft engine nacelle according to claim 4, characterized in that, The snow melting mechanism (4) also includes a rotating seat (45), which is rotatably connected to the outer surface of the resistor (43), and three heat dissipation blades (46) are fixed on the outer surface of the rotating seat (45).

6. The aircraft engine nacelle according to claim 1, characterized in that, The rectifier ring (101) is equipped with a buffer mechanism (5), which includes a fixed seat (52). Several fixed seats (52) are fixed in a ring shape inside the rectifier ring (101). Each support plate (21) has a rotating rod (51) fixed at its end. The other end of the rotating rod (51) is rotatably connected to a swing seat (53). One end of the swing seat (53) is rotatably connected to one side of the fixed seat (52). The end of the fixed seat (52) is rotatably connected to a torsion spring shaft (56). The end of the swing seat (53) is fixedly connected to the torsion spring shaft (56).

7. An aircraft engine nacelle according to claim 6, characterized in that, The buffer mechanism (5) further includes a sliding block (54). A groove (58) with an end opening is provided on one side of the fixed seat (52). The sliding block (54) is slidably connected inside the groove (58). A spring damper (57) is fixedly connected between one side of the sliding block (54) and the inner wall of the fixed seat (52). A connecting rod (55) is rotatably connected to the end of the rotating shaft. The other end of the connecting rod (55) is rotatably connected to the sliding block (54).

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