Small-size quickly separated firer-unlocking bolt

Abstract

The invention provides a small-size quickly separated firer-unlocking bolt. The small-size quickly separated firer-unlocking bolt comprises an unlocking bolt main body (1), a sealing ring (2) and a semiconductor bridge-type pressure cartridge case (3). In the small-size quickly separated firer-unlocking bolt, a semiconductor bridge firing element is adopted as a firer connection and separation mechanism of the firing element; the whole axial length of the small-size quickly separated firer-unlocking bolt is 60 to 65 millimeters, and the radial size is less than or equal to 16 millimeters; the separation time of the small-size quickly separated firer-unlocking bolt is 1.0 to 1.1 microseconds, the separation synchronism is 0.10 to 0.15 microseconds, and the connection bearing capacity is 21 to 25kN. The small-size quickly separated firer-unlocking bolt has the characteristics of small structural size, short separation time, high synchronism, low firing energy and the like; a safe, quick and synchronous separation function of the interstage of a spacecraft can be realized; the small-size quickly separated firer-unlocking bolt can be directly applied to interstage separation systems of the spacecrafts such as high-speed guided missiles, airships, satellites and the like; meanwhile, a beneficial reference is provided for a design of a similar power source firer mechanism.

Description

technical field [0001] The invention relates to a pyrotechnic unlocking bolt for inter-stage connection and separation functions of spacecraft such as missiles, satellites and spaceships, which is composed of a semi-conductor bridge ignition element pressure cartridge and an unlocking bolt body. Background technique [0002] Compared with the mechanical unlocking and separating mechanism, the pyrotechnic unlocking bolt has the characteristics of small size, simple structure, short separation time and high synchronization. The existing pyrotechnic unlocking bolts for spacecraft must meet the safety index requirements of 1A1W5min non-ignition, and the best level of separation time performance is generally on the order of tens to tens of milliseconds (under the condition of 5A DC ignition). Some special separation occasions such as inter-stage separation require faster separation, the separation time is often not greater than 10ms, and the synchronization is not greater than 1m...

AI Technical Summary

Problems solved by technology

The existing pyrotechnic unlocking bolts of pressure cartridges equipped with insensitive igniting elements can no longer meet the requirements of rapid separation. At present, the insensitive igniting elements of pressure cartridges are generally bridge wire or bridge belt type. Although such igniting elements can To achieve the safety requirements of 1A1W5min non-ignition, but to shorten the action time, the ignition current must be greatly increased, such as greater than DC 10A

In this way, the size of the power supply on the aircraft must be increased, and the load on the power supply is doubled. Sometimes it is difficult to provide such a large current and load on the aircraft

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