Smoke generating device for aircraft

Abstract

The present invention discloses a smoke generating device for aircraft, comprising a hollow tank body, wherein the tank body is provided with solid smoke generating agent, an ignition package, and a twisted pair, wherein one end of the twisted pair is connected to one end of the ignition package, the other end of the twisted pair is connected to an ignition contact, and the ignition package is connected to the smoke generating agent. The present invention solves the problem that the original liquid smoke generating method is limited by the aircraft model and has low safety performance. The smoke generating device adopts a solid smoke generating tank, which is easy to carry and replace, has high safety performance, and meets the requirements of different types of aircraft models.

Description

Technical Field

[0001] The present invention relates to the field of flight technology, and in particular to a smoke generating device for an aircraft. Background Art

[0002] In flight performances, military training, exercises, and as a communication signal for rescue and ground airdrop missions, colored smoke bands or smoke are released. Currently, existing smoke generating devices usually use liquid smoke, which requires the aircraft to be modified. The smoke is generated by using the airflow and heat of the engine nozzle, so it is limited to aircraft with turbojet or turboflat engines. In addition, the use of liquid smoke is not safe because of its unstable physical state. Summary of the invention

[0003] Based on the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a solid-state smoke generating device to solve the problem that the original liquid smoke generating method is limited by the machine type and has low safety performance.

[0004] The present invention discloses a smoke generating device for an aircraft, comprising: a hollow tank body, in which solid smoke generating powder, an ignition pack, and a twisted pair are arranged, wherein one end of the twisted pair is connected to one end of the ignition pack, and the other end is connected to an ignition contact, and the ignition pack is connected to the smoke generating powder.

[0005] Furthermore, it also includes a smoke rear plugging cover, which covers the rear end of the tank body. The outer side of the rear plugging cover is fixed with a spring contact through a screw, and a wire is led out from the other end of the ignition package to connect the tail end of the screw.

[0006] Furthermore, two connectors are separated from the other end of the twisted pair, and the two connectors are respectively connected to circular cold-pressed bare terminals, and the circular cold-pressed bare terminals are connected to the ignition contacts through wires.

[0007] Furthermore, the upper connection cover is provided with a plurality of holes, namely, wire threading holes, screw holes and smoke outlet holes. The connector is passed through the wire threading holes and fixed on the circular cold-pressed bare terminal. A cover plate is also provided on the other side of the upper connection cover. The cover plate is fixedly connected to the upper connection cover by screws. The number of smoke outlet holes can be multiple.

[0008] Furthermore, the smoke powder has a hollow cavity, the ignition package is placed in the hollow cavity, and one end of the twisted pair connected to the ignition package passes through the cavity, penetrates the ignition package and is buried in the smoke powder.

[0009] Furthermore, a plurality of spring contacts are arranged on the rear plugging cover, and they are all fixed to the rear plugging cover by screws, wherein one of the spring contacts is a central contact located at the center of the rear plugging cover, and the rest are at least two edge contacts arranged in parallel and distributed around the central contact, and the wires leading out of the ignition package are divided into two terminal ends, one of which is connected to the tail of the screw for fixing the central contact, and the other is connected to the tail of the screw for fixing the edge contact.

[0010] Furthermore, a small opening is provided on the side of the upper connecting cover, and a small opening is also provided at a corresponding position of the front end of the tank body. The small opening is engaged with screws and nuts to fix the upper connecting cover to the tank body.

[0011] Furthermore, a small opening is also provided on the side of the smoke rear plugging cover, and a small opening is also provided at a corresponding position at the rear end of the tank body. The small opening is engaged with screws and nuts to fix the rear plugging cover to the tank body.

[0012] Furthermore, a notch is provided on the side end surface of the upper connection cover for the wire to pass through and connect to the circular cold-pressed bare terminal, and a wire protection ring is provided on the wire threading hole.

[0013] Furthermore, the tank body is cylindrical, the smoke-generating agent is cylindrical, and the smoke-generating agent is closely attached to the inner wall of the tank body.

[0014] Compared with the prior art, the smoke generating device for aircraft provided by the present invention is a solid-state smoke generating device, which does not require any modification to the aircraft, but only needs to be simply installed on the aircraft, and can achieve the smoke generating effect by electronic ignition. This type of smoke generating device is not limited by aircraft models, and can be designed in different dimensions according to the aircraft model and actual smoke generating requirements, and the density of the smoke can be determined according to the needs. It is safe and reliable, and will only ignite when the current is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional structure diagram of the smoke generating device described in an embodiment of the present invention.

[0016] Figure 2 It is a schematic cross-sectional view of the smoking device according to an embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of an exploded assembly of the smoke generating device according to an embodiment of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the rear end of the tank body according to an embodiment of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the front end of the tank body according to an embodiment of the present invention.

[0020] FIG6( a ) is a schematic diagram of the three-dimensional structure of the upper connecting cover according to an embodiment of the present invention;

[0021] FIG. 6( b ) is a schematic plan view of the upper connecting cover according to an embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the tank body described in the embodiment of the present invention.

[0023] Figure 8 Schematic diagram of the structure of the cover sheet according to the embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different nouns to refer to the same component. This specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. The subsequent description of the specification is a preferred embodiment of the present invention, but the description is for the purpose of illustrating the general principles of the present invention, and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the definition of the attached claims.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The embodiment of the present invention discloses a smoke generating device for aircraft, which is used for aircraft to draw smoke. When in use, a solid colored smoke generating device is placed in the matching smoke drawing device and ignited with one key, which is convenient and quick. The smoke drawing device is a smoke drawing device used for aircraft to draw smoke when performing. Currently, aircraft draw smoke by basically using liquid smoke, which is prone to failure and has low safety.

[0030] like Figures 1 to 8 As shown, the smoke generating device in the embodiment of the present invention comprises: a tank body 1, which is a hollow cylindrical shape with a size of about 74 mm in diameter × 352 mm. The tank body 1 is made of flame retardant materials, such as aluminum or aluminum alloy, and is light. Of course, if the weight permits, other materials such as stainless steel can also be used. The tank body 1 is used to protect the internal parts and smoke generating agent 2 from damage and has a flame retardant effect. In addition, the tank body 1 is not limited to the cylindrical shape in this embodiment. It can also be made into other shapes, such as a cuboid, according to design requirements, and no limitation is made here.

[0031] The tank body 1 is provided with a solid block of smoke-generating powder 2, which is made of raw materials for generating smoke and does not generate open flame and smoke after ignition. It can be formulated with a single color or different colors according to application requirements, suitable for the shape of the tank body 1. The smoke-generating powder 2 is also provided in a cylindrical shape, close to the inner wall of the tank body 1, and the diameter of the smoke-generating powder 2 accounts for approximately one-half to three-quarters of the length of the tank body 1. The smoke-generating powder 2 has a circular cavity in the axial direction, and an ignition package 4 is arranged in the circular cavity. The ignition package 4 is a part for igniting the smoke-generating powder 2 but not generating open flame. The ignition package 4 is provided in a cylindrical shape, and a circle of twisted pair wire 3, that is, a power line, is closely provided at one end of the smoke-generating powder 2 to conduct current. One end of the twisted pair wire 3 (actually comprising two connectors, one for the live wire and the other for the neutral wire) passes through the cavity of the smoke-generating powder 2, and then passes through the axial direction of the cylindrical ignition package 4 to connect to the smoke-generating powder 2 and is buried in the smoke-generating powder 2.

[0032] A smoke rear plugging cover 5 is provided at the rear end of the tank body 1, and the rear plugging cover 5 is covered in the tank body 1. The rear plugging cover 5 is made of non-metallic material to protect the conduction of the contact circuit. The outer side surface of the smoke rear plugging cover 5 forms a boss portion, and four spring contacts 6 are fixed on the outer surface, one of the spring contacts 6 is located at the center of the circle of the rear plugging cover 5, which is the central contact 61, and the other three form a roughly equilateral triangle shape and are located on the outer peripheral surface outside the central contact, which are edge contacts 62. Of course, those skilled in the art should understand that the number of spring contacts 6 is not limited to four in the present embodiment, and in principle, at least two. The spring contact 6 is connected to the ignition contact of the special smoking device by press-fit contact to ensure the functions of voltage, current conduction and resistance value stability. The four spring contacts 6 are fixed by screws 13 passing through the outside of the rear plugging cover 5. The tail of the screw 13 is on the inside of the rear plugging cover 5. One end of the ignition package 4 has a fixedly connected ignition wire 41. Two wiring heads are led out from one end of the ignition wire 41. One of the two wiring heads is wound around the tail of the screw fixed to the central contact 61, and the other is wound around the tail of the screw of the edge contact 62, so that the spring contacts 6 on the central part and the outer peripheral surface are connected through the screws, the wiring heads and the ignition package 4 when power is turned on. Electrical conduction, the central contact can be connected to the live wire, for example, and the three spring contacts in the outer circle are all in parallel state and can be connected to the neutral wire. The advantage of setting three spring contacts in the outer circle is that when the spring contacts 6 are pressed, the central contact in the middle circle is usually the easiest to contact, while other parts are not flat or bent or have contact deviations due to the circular shape of the rear plugging cover 5, so that they cannot be completely pressed to the edge. However, due to the presence of three contacts in different positions, it is basically satisfied that at least one of the three can be pressed, so that the current is connected. Of course, if conditions permit, two spring contacts can be set. Among them, there is a small opening on the side end of the smoke rear plugging cover 5, which is a screw hole. A small opening is also opened at the corresponding position at the rear end of the tank body 1. The tank body 1 and the rear plugging cover 5 are fixed by cross countersunk self-tapping screws 14. The screw holes opened can be one, two, or more than two.

[0033] The front end of the tank body 1 is provided with an upper connecting cover 7 and a cover sheet 8. The upper connecting cover 7 mainly serves the functions of threading the twisted pair wire 3 and the smoke outlet. The upper connecting cover 7 has a accommodating space in which the twisted pair wire can be coiled. The cover sheet 8 is relatively thin and easy to bend when subjected to force. When in use, the cover sheet 8 will be pushed open but will not fall off, and smoke will be ejected from the gap around the edge of the cover sheet 8. The center of the upper connecting cover 7 has a central through hole, which serves as the main smoke outlet. Five small connecting holes are opened on the surrounding surfaces of the outer side of the central through hole. Among the five small connecting holes, one is used as a threading hole 71, three are used as smoke outlets 72, and the smallest one is used as a threading hole 71. The screw hole 73 is provided with three smoke outlets to ensure uniform smoke output. A wire protection ring is inserted into the threading hole. The other end of the twisted pair wire 3 passes through the threading hole on the upper connecting cover 7. A wire protection ring 12 is inserted into the threading hole. Two connectors are led out after passing through, one for the live wire and the other for the neutral wire. The two connectors are respectively fixed on the circular cold-pressed bare terminal 9. The circular cold-pressed bare terminal 9 is connected to the ignition contact of the smoke-drawing device through a wire. The switch of the ignition contact is set in the smoke-drawing device. It is pressed with the special smoke-generating device circuit through the cold-pressed bare terminal 9 to ensure voltage stability. A cover sheet 8 is arranged on the outer side of the upper connecting cover 7. The cover sheet 8 is roughly circular. The cover sheet 8 can cover the smoke outlet of the upper connecting cover 7 in a natural state to prevent dust from falling out when the smoke-generating agent 2 is not ignited. A small round hole 82 with the same diameter as the screw hole of the upper connecting cover 7 is arranged at the position corresponding to the cover sheet 8. The small round hole is passed through a cross semicircular head screw and a nut to fix the upper connecting cover 7 and the cover sheet 8. A screw hole 74 is arranged on the side end surface of the upper connecting cover 7, and a screw hole is also arranged on the corresponding front end of the tank body 1. The two screw holes are connected, and the front end of the tank body 1 is fixed to the upper connecting cover 7 through a cross countersunk head screw nut 75. In this embodiment, there are three screws for fixing the tank body 1 and the upper connecting cover 7. In order not to affect the upper cover sheet 8 when being "pushed open" by the screws, three semicircular notches 81 are opened on the outer end of the cover sheet 8, which just correspond to the positions of the three screws. In this way, when igniting, the cover sheet 8 can avoid the three-hole nuts on the side, so that it can be pushed open smoothly. The cover sheet 8 is made of a thin metal sheet, such as an aluminum sheet or an iron sheet, with a thickness of 0.1 mm. In practical applications, the front and rear ends of the tank body 1 are both provided with covers to cover the spring contacts and the upper connection cover.

[0034] In addition, a U-shaped notch 15 is provided on the side end face of the upper connecting cover, and a similar U-shaped notch is also provided at the front end of the tank body. The wire enters the upper connecting cover 7 through the U-shaped notch 15 and connects to the circular cold-pressed bare terminal 9. The cold-pressed bare terminal 9 can also be pulled out through the U-shaped notch 15, thereby making the ignition contact of the smoke pulling device electrically conductive with the twisted pair wire 3 through the wire.

[0035] For the ignition mode of the smoke powder 2, the smoke generating device of the present invention supports two modes: wiring ignition and contact ignition. The wiring ignition is to connect the wire at the front end of the tank body 1 to the cold-pressed bare terminal 9, and then connect to the ignition package 4 through the twisted pair wire 3. The contact ignition is to conduct the current to the ignition package 4 through the spring contact 6 at the rear end of the tank body 1. Compared with the liquid ignition method in the prior art, these two methods are safer to use, convenient to replace and carry, and meet the needs of different types of aircraft.

[0036] The installation process of the present invention is as follows:

[0037] The first step is to connect the solid block of smoke powder 2 with the twisted pair wire 3 or the ignition package 4, then connect the spring contact 6 with the rear plug cover 5 using screws, connect the protruding tail end of the screw with the wire of the ignition package 4, and then install the ignition package 4 into the cavity of the smoke powder 2.

[0038] In the second step, install the connected spring contact 6, rear plugging cover 5, ignition package 4, and smoke powder 2 into the tank body 1, press the rear plugging cover 5 tightly so that the boss part of the rear plugging cover 5 is tightly connected with the port of the tank body 1, and then screw in the cross countersunk self-tapping screws according to the installation holes and tighten them.

[0039] In the third step, the wire outlet hole of the upper connection cover 7 is inserted into the wire protection ring 12, and the twisted pair 3 is taken out from one end of the tank body 1, and the two ends of the line are connected with the cold-pressed circular cold-pressed bare terminals 9. The cover piece 8 is connected through the special hole using screws and nuts, and the smoke outlet is covered. Finally, the upper connection cover 7 is placed in the tank body 1, and the boss part of the other end is tightly connected to the port of the tank body 1. After that, the cross countersunk screw is screwed in according to the installation hole and tightened, and the circular cold-pressed bare terminal 9 and the twisted pair 3 of the exposed part of the upper connection cover 7 are wound into the groove of the upper connection cover 7, and the installation is completed.

[0040] When igniting, take out the circular cold-pressed bare terminal 9, press and connect it with the special smoking device to ignite, or put the smoking device into the special smoking device, connect the spring contact 6 with the ignition contact in the smoking device, and after starting the ignition button of the special smoking device, the current is transmitted to the ignition package 4 through the twisted pair wire 3 or the spring contact 6 for ignition. After the ignition package 4 is ignited, it is transmitted to the smoking powder 2 for smoking. Various colors of environmentally friendly smoke are generated by pushing open the cover sheet 8 inside the hollow smoking powder 2 to achieve its functional purpose.

[0041] It is worth noting that the above is only a preferred embodiment of the present invention, and does not limit the scope of patent protection of the present invention. The present invention can also improve the materials and structures of the above-mentioned various parts, or replace them with technical equivalents. Therefore, all equivalent structural changes made by using the description and illustrations of the present invention, or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.

Claims

1. A smoke generating device for an aircraft, comprising a hollow tank, characterized in that: The tank body is provided with solid smoke powder, an ignition package, and a twisted pair, wherein one end of the twisted pair is connected to one end of the ignition package, the other end of the twisted pair is connected to an ignition contact, and the ignition package is connected to the smoke powder; It also includes a smoke rear plugging cover, which covers the rear end of the tank body, and a spring contact is fixed on the rear plugging cover by a screw, and a wire is led out from the other end of the ignition package to connect the tail end of the screw; there are multiple spring contacts on the smoke rear plugging cover, one of which is a central contact located at the center of the rear plugging cover, and the rest are at least two edge contacts arranged in parallel and distributed around the central contact, and the wire led out of the ignition package is divided into two wiring heads, one of which is connected to the tail end of the screw used to fix the central contact, and the other is connected to the tail end of the screw used to fix the edge contact; An upper connection cover is provided at the front end of the tank body, and the upper connection cover is provided with a plurality of holes, namely, a threading hole, a screw hole and a smoke outlet hole. The connector is passed through the threading hole and fixed on the circular cold-pressed bare terminal. A cover plate is also provided on the other side of the upper connection cover, and the cover plate is fixedly connected to the upper connection cover by screws. A semicircular notch is provided at the outer end of the cover plate, which just corresponds to the position of the screws used to fix the side end surface of the tank body and the upper connection cover. The other end of the twisted pair is divided into two connectors, which are respectively connected to round cold-pressed bare terminals, and the round cold-pressed bare terminals are connected to ignition contacts through wires.

2. The smoke generating device for an aircraft according to claim 1, characterized in that: The smoke powder has a hollow cavity, the ignition package is placed in the hollow cavity, one end of the twisted pair connecting the ignition package passes through the cavity, penetrates the ignition package and is buried in the smoke powder.

3. The smoke generating device for an aircraft according to claim 2, characterized in that: A small opening is provided on the side of the upper connecting cover, and a small opening is also provided at a corresponding position of the front end of the tank body. The small opening is engaged with screws and nuts to fix the upper connecting cover to the tank body.

4. The smoke generating device for an aircraft according to claim 1, characterized in that: The side of the smoke rear plugging cover is also provided with a small opening, and the corresponding part of the rear end of the tank body is also provided with a small opening, and the rear plugging cover is fixed to the tank body through the cooperation of screws and nuts.

5. The smoke generating device for an aircraft according to claim 2, characterized in that: The side end surface of the upper connection cover is provided with a U-shaped notch for the wire to pass through and connect to the circular cold-pressed bare terminal, and a wire protection ring is sleeved on the wire threading hole.

6. The smoke generating device for an aircraft according to claim 1, characterized in that: The tank body is cylindrical, the smoke powder is cylindrical, the smoke powder is closely attached to the inner wall of the tank body, and the smoke powder is a cylinder.

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