Dynamic parachute-opening control system

A control system and dynamic technology, applied in the direction of general control system, control/regulation system, computer control, etc., can solve problems such as difficult to obtain parachute opening dynamic pressure, parachute opening dynamic pressure low, parachute opening timing does not meet the test design requirements, etc. Achieve the effect of improving reliability and effectiveness, improving reliability, and controlling the platform well

Active Publication Date: 2020-02-07
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for parachutes working on extraterrestrial bodies with thin air, the dynamic pressure of parachute opening is low. When conducting airdrop tests on the surface of the earth to verify the dynamic pressure of parachutes, it is difficult to overcome the influence of launch conditions and atmospheric density through time control, and it is difficult to obtain accurate opening. Umbrella dynamic pressure may cause the opening timing of the parachute to not meet the test design requirements

Method used

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  • Dynamic parachute-opening control system
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  • Dynamic parachute-opening control system

Examples

Experimental program
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Embodiment 1

[0035] A dynamic parachute opening control system, comprising: a pitot tube, an atmospheric data computer, a dynamic pressure acquisition battery, a dynamic pressure data processor, a pin switch, a general controller battery, a general controller, an umbrella launcher, a test umbrella, a fire industrial battery;

[0036] The pitot tube is used to sense the atmospheric pressure in the flight direction and the atmospheric static pressure at the flight altitude in real time and then send it to the atmospheric data computer; the atmospheric data computer obtains real-time dynamic pressure according to the atmospheric pressure in the flight direction and the atmospheric static pressure at the flight altitude and sends it to the dynamic pressure data processor; when the dynamic pressure data processor judges that the real-time dynamic pressure meets the dynamic pressure conditions for opening the umbrella, it sends an umbrella opening command to the general controller; the general co...

Embodiment 2

[0044] A dynamic parachute opening control system, comprising: a pitot tube, an atmospheric data computer, a dynamic pressure acquisition battery, a dynamic pressure data processor, a pin switch, a general controller battery, a general controller, an umbrella launcher, a test umbrella, a fire Work battery, overload measuring device;

[0045] The overload measuring device is used for real-time sensitive overload, and when it is judged that the real-time overload meets the parachute-opening preparation condition, an umbrella-opening preparation instruction is sent to the general controller;

[0046] The pitot tube is used to sense the atmospheric pressure in the flight direction and the atmospheric static pressure at the flight altitude in real time and then send it to the atmospheric data computer; the atmospheric data computer obtains real-time dynamic pressure according to the atmospheric pressure in the flight direction and the atmospheric static pressure at the flight altitude...

Embodiment 3

[0056] figure 1 It is a schematic diagram of the control system scheme. The system is mainly composed of a pitot tube, an atmospheric measurement computer, a dynamic pressure data processor, a general controller, an umbrella launcher, a test umbrella, a connecting cable and a battery. The technical solution of the present invention is that a control system is composed of a pitot tube, an atmospheric data computer, a dynamic pressure data processor and a general controller. Install a pitot tube at the head of the model to collect total pressure and static pressure, and send them to the atmospheric data computer. The atmospheric data computer sends the dynamic pressure data to the dynamic pressure data processor through the 485 bus, and the dynamic pressure data processor is judged to the general controller. Send out the bomb test umbrella command, the dynamic pressure data processor and the general controller isolate different power supplies through the optocoupler, avoid groun...

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Abstract

The invention provides a dynamic parachute-opening control system, and belongs to the technical field of spacecraft test control. Axial dynamic pressure and static pressure of a model are measured through an airspeed head arranged at a head of the model, the model axial dynamic pressure is output after processing through an atmosphere measurement computer, then the model axial dynamic pressure issent to a dynamic pressure data processor, and the dynamic pressure data processor is used for comparing the measured dynamic pressure value with a dynamic threshold, and real-time measured overload data can be combined. When judging that a comprehensive condition reaches a parachute-popup condition, a test parachute-popup instruction is sent to a general controller so as to pop up a test parachute, wherein the comprehensive condition, especially the dynamic threshold, is a simulation result obtained according to model flight trajectory simulation analysis. The control system provided by the invention can be applied to the precise control of various airdrop tests to verify the parachute opening performance of the parachute under the specific dynamic pressure condition, the reliable work ofthe test parachute can be effectively guaranteed, and the safe recycling of the test model is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of spacecraft test control, in particular to a dynamic parachute opening control system. Background technique [0002] In recent years, with the development of my country's space technology and the overall layout of national space missions, my country has begun to carry out deep space exploration missions represented by Mars. The mission includes entering the Martian atmosphere, slowing down by parachuting, and finally landing the spacecraft on the surface of Mars. The parachute is an important stand-alone product to accomplish this task. It is also a product that needs to focus on performance verification in ground tests. Parachute opening dynamic pressure is an important design index that affects the parachute work. The newly developed parachute needs to pass the airdrop test to verify whether the parachute can open the parachute smoothly under the required dynamic pressure. [0003] In the traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02G05B15/02
CPCG05B17/02G05B15/02
Inventor 黎光宇王立武吕智慧李健王帝张兴宇隋毅张亚婧李春
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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