Method for determining resistance characteristic of group umbrella system

A technology of resistance characteristics and determination methods, applied in special data processing applications, geometric CAD, design optimization/simulation, etc., can solve problems such as inability to meet the requirements of full-scale parachute aerodynamic performance measurement tests, high costs and risks, and achieve accurate calculations High degree of accuracy and good fit

Pending Publication Date: 2021-11-12
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

Existing wind tunnels simply cannot meet the test requirements for the aerodynamic performance of a full-scale parachute, and are usually measured by launching tests or flight tests, but these two methods have extremely high costs and risks

Method used

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  • Method for determining resistance characteristic of group umbrella system
  • Method for determining resistance characteristic of group umbrella system
  • Method for determining resistance characteristic of group umbrella system

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the present invention clearer, the implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] A method for determining the resistance characteristics of a group parachute system, the group parachute system includes a group parachute, a load body, and can also include a sling, such as figure 1 shown.

[0034] In order to achieve the above object, the technical solution adopted in the present invention is: group parachute resistance characteristic calculation analysis and test correction method, described group parachute system comprises two major components of load body to be recovered and group parachute, and this method specifically comprises the following steps:

[0035] (1) Specify the vertical landing speed range of the parachute system in the stable landing state [V l ,V u ], and the total mass m of the parachute syste...

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Abstract

A method for determining resistance characteristics of a group umbrella system belongs to the field of spacecraft return deceleration landing design, adopts a fluid-solid coupling and CFD (computational fluid dynamics) combined mode to predict the resistance characteristics of group parachutes, introduces fabric air permeability test data and tensile test data to calibrate a mathematical model, and has very high calculation accuracy; and in combination with existing wind tunnel test and air-drop test data, the resistance characteristic of the group parachute system can be estimated more accurately in the design stage, the development process is effectively guided, the frequency of the wind tunnel test and the air-drop test is reduced, and time and cost are saved.

Description

technical field [0001] The invention relates to a method for determining the resistance characteristics of a group parachute system, which belongs to the field of spacecraft return and deceleration landing design. Background technique [0002] With the development of my country's space station construction and the acceleration of space flight return missions such as manned moon landings and space exploration in the future, the existing single large parachute cannot meet the deceleration and landing requirements of heavier spacecraft. A parachute system that provides greater aerodynamic drag. Therefore, the development of my country's new generation of manned spacecraft group parachute system. Different from the traditional single parachute system, the group parachute system has two or more parachutes to form the aerodynamic main deceleration system of the spacecraft. At the same time, the complexity of the system is higher, and the aerodynamic and dynamic coupling characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/23G06F30/28
CPCG06F30/15G06F30/23G06F30/28
Inventor 王奇雷江利吴卓王文强王永滨王飞隋蓉竺梅芳杨霞王洁牟金岗
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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