Unmanned aerial vehicle boosting engine ignition device

Abstract

The invention provides an ignition device for a boosting engine of an unmanned aerial vehicle. A plurality of explosive charging boxes with different explosive quantities are longitudinally stacked and connected, and the uppermost explosive charging box is connected with an ignition box. The design method is simple, repeated design and verification do not need to be carried out according to different engines, and the design period and test verification are reduced; and all parts are produced and can be used and taken at any time, so that the production period is shortened.

Description

Technical Field

[0001] The invention relates to the field of solid rocket engines, in particular to the design of an igniter for a booster engine of an unmanned aerial vehicle. Background Art

[0002] At present, domestic drones that cooperate to complete training tasks have been widely used in the field of air defense weapons, and the take-off power of such drones mainly uses solid rocket engines. Unmanned booster engines are not training equipment installed in the army, and are disposable products, which puts forward the requirements of low cost and low production cycle. The existing unmanned booster engine igniter basically follows the design concept of military equipment, using the ignition head + ignition cartridge method, but according to the design indicators of different engines, it is necessary to repeat the design and test verification, which has a long design cycle, many test verifications, and high production costs. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides an ignition device for a UAV booster engine. The ignition design method of the present invention is to achieve the following objectives:

[0004] a. Simplify the igniter design so that the igniter does not need to be redesigned and repeatedly verified for different engines;

[0005] b. Reduce the production cost and processing cycle of the igniter.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A UAV booster engine ignition device comprises an ignition box and a plurality of charge boxes, wherein the charge boxes with different charge amounts are stacked and connected vertically, and the top charge box is connected to the ignition box.

[0008] The ignition box includes two insensitive ignition heads, black powder, a cotton bag and a celluloid box. The heads of the two insensitive ignition heads are buried in the black powder and wrapped by the cotton bag. The cables of the insensitive ignition heads extend out of the cotton bag and the cotton cloth is then tightly wrapped with cotton thread. The celluloid box includes a base and a top cover. The base and the top cover are connected by threads. The top cover is an external thread and has a hole at the center of the bottom surface of the celluloid box. The cotton bag is placed in the celluloid box, and the arc cable extends from the hole in the top cover of the celluloid box, and the box thread is tightened.

[0009] The charge box comprises black powder, a cotton bag and a celluloid box, and black powders of different gradient weights are respectively loaded into the cotton bags. The celluloid box comprises a plugging cover, a top cover, a barrel section and a bottom cover, and the connection position between the barrel section and the top cover is the front end of the barrel section. The plugging cover, the top cover, the barrel section and the bottom cover are all connected by threads, and the connecting threads between the plugging cover and the top cover are the same as the threads of the ignition box base and the top cover, so as to ensure that the top cover of the ignition box is connected to the top cover of the charge box; threads are provided on the inner and outer surfaces of the front end of the barrel section, the outer surface threads are connected to the top cover, and the inner surface threads are designed to be the same as the bottom cover threads, so as to ensure that the two charge boxes are longitudinally connected by threads.

[0010] The black powder is dried at 60° C. for more than 4 hours.

[0011] The diameter of the opening is 1.1 times that of the insensitive ignition head cable.

[0012] The diameter of the celluloid cartridge is twice that of the ignition cartridge.

[0013] After mass production, the ignition cartridges and charge cartridges are stored in the warehouse. When designing the engine, the ignition charge amount, charge combustion surface, charge type and engineering experience are considered to select the charge amount of the ignition device. Different ignition cartridges are selected according to the charge amount. During assembly, charge cartridges with different amounts of charge are connected to the ignition cartridges and sealed with celluloid glue.

[0014] The beneficial effects of the present invention are:

[0015] 1. The design method is simple, and there is no need to repeat the design and verification according to different engines, which reduces the design cycle and test verification;

[0016] 2. All parts have been produced and can be taken as needed, reducing the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the medicine box. Figure 1 (a) is a schematic diagram of the ignition cartridge. Figure 1 (b) is a schematic diagram of the medicine box.

[0018] Figure 2 This is a diagram of the medicine box assembly. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] An ignition device for a booster engine of an unmanned aerial vehicle includes an ignition cartridge and a plurality of cartridges:

[0021] The ignition box includes two insensitive ignition heads, 5g of black powder, a cotton bag and a celluloid box. After the black powder is dried at 60°C for more than 4 hours, the heads of the two insensitive ignition heads are buried in 5g of black powder and wrapped by the cotton bag. The cables of the insensitive ignition heads extend out of the cotton bag and are then tightly wrapped with cotton thread. The celluloid box includes a base and a top cover, which are connected to the top cover by threads. The top cover is an external thread and has a hole at the center of the bottom surface of the celluloid box. The diameter of the hole is 1.1 times that of the cable of the insensitive ignition head. The cotton bag is placed in the celluloid box, and the arc cable extends out of the hole in the top cover of the celluloid box, and the box thread is tightened.

[0022] The charge box comprises black powder, a cotton bag and a celluloid box. The black powder is dried at 60°C for more than 4 hours and then loaded into the cotton bags according to different gradient weights, such as 5g, 10g and 20g. The diameter of the celluloid box is twice that of the ignition box. The celluloid box comprises a plugging cover, a top cover, a barrel section and a bottom cover. The connection position between the barrel section and the top cover is the front end of the barrel section. The plugging cover, the top cover, the barrel section and the bottom cover are all connected by threads. The connecting threads between the plugging cover and the top cover are the same as the threads of the ignition box base and the top cover, so as to ensure that the ignition box top cover can be connected to the charge box top cover. The inner and outer surfaces of the front end of the barrel section are provided with threads, the outer surface threads are connected to the top cover, and the inner surface threads are designed to be the same as the bottom cover threads, so as to ensure that the two charge boxes are connected by threads.

[0023] After mass production, the ignition cartridges and charge cartridges are stored in the warehouse. When designing the engine, the ignition charge amount, charge combustion surface, charge type and engineering experience are considered to select the charge amount of the ignition device. Different ignition cartridges are selected according to the charge amount. During assembly, charge cartridges with different amounts of charge are connected to the ignition cartridges and sealed with celluloid glue.

Claims

1. An ignition device for a UAV booster engine, comprising an ignition cartridge and a plurality of cartridges, characterized in that: The UAV booster engine ignition device comprises a plurality of charge boxes with different amounts of charge stacked and connected vertically, and the top charge box is connected to the ignition box.

2. The UAV booster engine ignition device according to claim 1, characterized in that: The ignition box includes two insensitive ignition heads, black powder, a cotton bag and a celluloid box. The heads of the two insensitive ignition heads are buried in the black powder and wrapped by the cotton bag. The cables of the insensitive ignition heads extend out of the cotton bag and the cotton cloth is then tightly wrapped with cotton thread. The celluloid box includes a base and a top cover. The base and the top cover are connected by threads. The top cover is an external thread and has a hole at the center of the bottom surface of the celluloid box. The cotton bag is placed in the celluloid box, and the arc cable extends from the hole in the top cover of the celluloid box, and the box thread is tightened.

3. The UAV booster engine ignition device according to claim 1, characterized in that: The charge box comprises black powder, a cotton bag and a celluloid box, and black powders of different gradient weights are respectively loaded into the cotton bags. The celluloid box comprises a plugging cover, a top cover, a barrel section and a bottom cover, and the connection position between the barrel section and the top cover is the front end of the barrel section. The plugging cover, the top cover, the barrel section and the bottom cover are all connected by threads, and the connecting threads between the plugging cover and the top cover are the same as the threads of the ignition box base and the top cover, so as to ensure that the top cover of the ignition box is connected to the top cover of the charge box; threads are provided on the inner and outer surfaces of the front end of the barrel section, the outer surface threads are connected to the top cover, and the inner surface threads are designed to be the same as the bottom cover threads, so as to ensure that the two charge boxes are longitudinally connected by threads.

4. The UAV booster engine ignition device according to claim 1, characterized in that: The black powder is dried at 60° C. for more than 4 hours.

5. The UAV booster engine ignition device according to claim 1, characterized in that: The diameter of the opening is 1.1 times that of the insensitive ignition head cable.

6. The UAV booster engine ignition device according to claim 1, characterized in that: The diameter of the celluloid cartridge is twice that of the ignition cartridge.

7. The UAV booster engine ignition device according to claim 1, characterized in that: After mass production, the ignition cartridges and charge cartridges are stored in the warehouse. When designing the engine, the ignition charge amount, charge combustion surface, charge type and engineering experience are considered to select the charge amount of the ignition device. Different ignition cartridges are selected according to the charge amount. During assembly, charge cartridges with different amounts of charge are connected to the ignition cartridges and sealed with celluloid glue.

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