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A parachute opening force measurement system and method applied to spacecraft airdrop test

A measurement system and parachute technology, applied in force/torque/power measuring instruments, measuring devices, instruments, etc., can solve unsatisfactory problems, achieve reliable operation, shorten test cycle, and ensure normal parachute opening procedures

Active Publication Date: 2016-06-01
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

Under normal circumstances, the process from ejecting the guiding parachute to opening the main parachute is less than 30s. Therefore, this method cannot meet the requirements of the spacecraft airdrop test to measure the overload of parachute opening.

Method used

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  • A parachute opening force measurement system and method applied to spacecraft airdrop test
  • A parachute opening force measurement system and method applied to spacecraft airdrop test
  • A parachute opening force measurement system and method applied to spacecraft airdrop test

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Embodiment Construction

[0026] Such as figure 1 Shown is the structural composition diagram of the measuring method of the present invention, Figure 2a , 2b It is the appearance and installation dimensions of FD-20T and FD-20Z of the present invention. Among them, 1 is the first conversion joint, 2 is the tension sensor, 3 is the second conversion joint, 4 is the conversion connection strap, 5 is the data cable, 7 is the circular separation electrical connector, and 6 is the pull cord of the circular separation electrical connector , 8 is the test cabin body, 9 is the measurement power supply, 10 is the internal recorder, 11 is the measurement circuit switch, and 12 is the parachute.

[0027] One end of the tension sensor 2 is installed and connected with the parachute strap through the first conversion joint 1, and the other end is docked and installed with the parachute connection and separation mechanism on the test cabin body through the second conversion joint 3 and the conversion connection ...

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Abstract

The invention provides a parachute opening force measuring system and method applied to a spacecraft airdrop test. The system is characterized in that one end of a pulling force sensor is mounted and connected to a parachute suspender through a first adapter connector, and while the other end of the pulling force sensor is abutted and mounted to a parachute connecting and disconnecting mechanism on a cabin body through a second adapter connector and an adapter connecting suspender; a data cable on the pulling force sensor is mounted and fixed to the cabin body through a separable electric connector, wherein the separable electric connector sleeves a rope pin of the second adapter connector through a pulling rope. According to the parachute opening force measuring system and method applied to the spacecraft airdrop test, the parachute is pulled out of a parachute cabin, a closed opening is released and then the parachute is fully charged with air; the puling force sensor measures the parachute opening force during dropping the parachute and inputs the data to an inner recorder for storing through the data cable by utilizing the separable electric connector; the pulling rope of the separable electric connector is pulled while the parachute is separated from the cabin body according to the preset working program, and thus the separable electric connector is separated from the cabin body; when the cabin body arrives at the ground, the data can be read from the inner recorder.

Description

technical field [0001] The invention relates to a data measurement and acquisition system, in particular to a method for measuring the full-range tracking, real-time measurement and recording of parachute opening force which is suitable for the airdrop test of returnable spacecraft. Background technique [0002] So far, in the process of engineering design and analysis of parachutes, semi-empirical and semi-theoretical methods are usually used, and experimental research is still the main research method of parachutes. Among them, the wind tunnel test in the constraint (tethering) test method and the airdrop test in the unconstrained free flight test method are the two most commonly used test methods in the parachute performance research test. The wind tunnel test can study a large number of aerodynamic characteristics related to the parachute opening process and the influence of the canopy structure on it; while the airdrop test has the advantage that the movement of the par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 赵玮郭李杨
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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