Title:
DEFLATION DEVICE FOR EJECTION OVERLOAD CONTROL OF ROCKET EJECTION SEAT
Document Type and Number:
WIPO Patent Application WO/2022/082416
Kind Code:
A1
Abstract:
A deflation device for ejection overload control of a rocket ejection seat. The deflation device comprises single joints (1), a valve seat (4), and an electric initiator (7); the single joints (1) are provided on outer cylinders (10) of an ejection mechanism in one-to-one correspondence, the single joints (1) are in sealing communication with the top ends of the outer cylinders (10), and all the single joints (1) are in sealing communication with a multi-way joint (3) by means of respective guide pipes (2); the valve seat (4) is provided with a first channel and a second channel, the multi-way joint (3) is connected to the valve seat (4) and an outlet end of the multi-way joint is in sealing communication with an inlet of the first channel, an outlet of the first channel is communicated with the atmosphere, a piston rod (9) that cannot be detached is fitted in the second channel, and when in an initial state, the piston rod (9) is fixed to the valve seat (4) by means of a shear pin (5); the electric initiator (7) is mounted at an inlet of the second channel in a butt-joint manner by means of a mounting cylinder (6), the mounting cylinder (6) forms a closed channel between the electric initiator (7) and the piston rod (9), and when working, the electric initiator (7) can drive the piston rod (9) to shear off the shear pin (5) and enable same to extend out of an outlet of the second channel to block the outlet of the first channel. The device can control the magnitude of ejection overload according to requirements, thereby reducing the complexity and weight of a control system.
Inventors:
LI GAOCHAO (CN)
MA JINGUI (CN)
FENG GUANGHUI (CN)
MA JINGUI (CN)
FENG GUANGHUI (CN)
Application Number:
PCT/CN2020/122121
Publication Date:
April 28, 2022
Filing Date:
October 20, 2020
Export Citation:
Assignee:
AEROSPACE LIFE SUPPORT IND LTD (CN)
International Classes:
B64D25/10; B64D25/102
Foreign References:
| US4706909A | 1987-11-17 | |||
| CN110803301A | 2020-02-18 | |||
| GB2363448A | 2001-12-19 | |||
| US3186662A | 1965-06-01 |
Attorney, Agent or Firm:
HUBEI WUHAN YONGJIA PATENT AGENCY CO., LTD. (CN)
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