Low-impact parachute opening device for fairing recovery

Abstract

The invention relates to a low-impact parachute opening device for rocket fairing recovery. The low-impact parachute opening device comprises a parachute, a parachute shooting rocket, a parachute bay structure, a connecting belt, a separable electric connector, an ignition cable, a connecting rope and a parachute bay structure. Before working, the parachute shooting rocket and the parachute are restrained in the parachute bay structure, the parachute shooting rocket is connected with the parachute pack through the connecting belt, the parachute canopy is restrained in the parachute pack and is not fixedly connected with the parachute pack, one end of the parachute harness is connected with the parachute canopy, and the other end of the parachute harness is fixedly connected with the parachute bay structure; one end of the parachute shooting rocket is connected with the cabin cover, the other end of the parachute shooting rocket is provided with a pin shaft and an electric igniter, the pin shaft is connected with the parachute pack through the connecting belt, the electric igniter is connected with one end of an ignition cable, the other end of the ignition cable is connected with a separable electric connector plug, a separable electric connector socket is fixedly installed on the parachute bay structure, and the parachute bay structure is fixed on a fairing base; and meanwhile, the parachute shooting rocket is fixedly connected with the separable plug end of the separable electric connector through a connecting rope.

Description

technical field [0001] The invention relates to a parachute-opening device for a launch vehicle fairing, which belongs to the field of spacecraft recovery systems. Background technique [0002] In recent years, the recovery of carried separations including fairings, boosters, and sub-classes has become a research hotspot at home and abroad. The difficulty of fairing recovery lies in that the fairing is a thin shell structure with low strength and irregular shape. For uncontrolled flight, there will still be angular velocity when the parachute is opened; the parachute needs to be able to quickly open the parachute outside the area affected by the fairing, and at the same time, it is necessary to quickly deploy the parachute above 15 square meters to effectively brake the angular velocity of the cover, otherwise It is easy to get entangled with it. This promptly requires the larger parachute of use area, requires again higher parachute pull-out speed. [0003] The recovery s...

AI Technical Summary

Problems solved by technology

[0003] The recovery system often uses a pyrotechnic device as the actuator for opening the parachute. Generally, the parachute is ejected quickly through a pyrotechnic catapult. If a parachute of this size is directly ejected using a traditional catapult, a large recoil force will be generated, which will cause damage to the fairing. Destruction; if a small guide parachute is ejected and the large parachute is pulled out, the parachute opening speed will be slowed down, increasing the risk of entanglement with the fairing

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