A high temperature resistant pyrotechnic catapult

Abstract

The invention relates to a high-temperature-resistant igniter ejector which comprises an inner barrel component, an outer barrel component, a cartridge box component and shear pins, wherein the innerbarrel component and the outer barrel component are fixed through the shear pins, the outer barrel component is connected with the cartridge box component, a protective cover of an external aircraft is connected with the inner barrel component, and the external aircraft is connected with the outer barrel component. The ejector has an axial bearing capacity, can resist to external high temperatureof 560 DEG C, can be normally ejected and separated after 1500s and has a higher ejection speed, and an ejector piston is flush with the end surface of the outer barrel after separation so as to ensure the aerodynamic configuration of the aircraft. The high-temperature-resistant igniter ejector can be used for connection and separation of the protective cover and a supersonic aircraft.

Description

technical field [0001] The invention belongs to the field of pyrotechnic devices, and relates to a high-temperature-resistant pyrotechnic catapult capable of realizing the separation of a supersonic aircraft protective cover and a supersonic aircraft. Background technique [0002] Catapults are widely used in spaceships, satellites, launch vehicles, and unmanned aerial vehicles. They are mainly used for connection and separation between structures, providing speed for reliable separation of objects, and are generally used for locking and separating light-weight cabins. The cover and protective cover are the key technologies of the separation ejection system, which determine the success or failure of the ejection separation system, and their importance in the aerospace field is becoming more and more prominent. [0003] With the upgrading of spacecraft mission requirements, supersonic vehicles have higher requirements on thermal environment, and catapults, which are key actio...

AI Technical Summary

Problems solved by technology

[0004] (1) If the main charge with high temperature resistance is selected, it will be more insensitive, and it will definitely affect the ignition reliability under the condition of limited ignition current

[0005] (2) The shear pins of existing catapults are generally made of aluminum alloy and structural steel, and the shear strength decreases rapidly under high temperature conditions, which affects the speed and thrust of the catapult

[0007] Therefore, when the catapult uses the existing mature main charge, it can only be optimized from the structural design to reduce the speed of structural heat conduction and ensure that the temperature at the position of the main charge and the igniter can meet the use requirements

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