Parachute working condition automatic detection system and detection method thereof

Abstract

The invention provides a parachute working condition automatic detection system and a detection method thereof. The detection system comprises a travel switch, a first height annunciator, a second height annunciator and a controller. The detection method comprises the following steps: connecting a starting pull pin of the travel switch with a connection-separation mechanism of a main parachute in order to judge whether or not the main parachute is opened normally according to the switch-on / off state of the travel switch; after the main parachute is opened normally, estimating the falling speed of the main parachute in an opening-falling process through the time difference and the height difference between signals returns by the two height annunciators; judging whether or not the main parachute fails by comparing the speed value with a set thread value in order to realize automatic detection and failure judgment of the working condition of the parachute of a spacecraft. By adopting automatic detection method, the defects of manual detection judgment and remote control switching are overcome, failures of the main parachute are identified rapidly, a backup parachute can be started in time, and the safety of the spacecraft is ensured.

Description

technical field [0001] The invention belongs to the technical field of aerospace return and landing, and in particular relates to an automatic detection system and a detection method for the working condition of a parachute. Background technique [0002] The final stage of the return process of a retrievable spacecraft is a safe landing, which is also the final stage of the entire mission of this type of spacecraft. With the in-depth development of manned spaceflight projects, lunar exploration projects, and major special projects for deep space exploration, the deceleration landing system with the parachute system as the core device of aerodynamic deceleration is one of the main components for the spacecraft to return to the earth and enter the planet. The most important part of the work. This is especially true for a spacecraft as a manned spacecraft, and recovery and landing technology is one of its most critical core technologies. The parachute is the core component to...

AI Technical Summary

Problems solved by technology

Due to the low height of the recovery system, the fast descent speed, and the tight timing instructions, it is difficult to realize the manual remote control detection of the parachute working status and switch the working mode. Therefore, it is necessary to realize the automatic detection and identification of the parachute working status. Determine if the parachute is malfunctioning

Images