Simulation method based on spatial rarefied flow environment

Abstract

Disclosed is a simulation method based on spatial rarefied flow environment. The method relies on devices including an electronic cyclotron resonance source, an electrostatic accelerator board and a force / heat test bed, which are disposed in a same cavity, and the electronic cyclotron resonance source and the electrostatic accelerator board are disposed on a same horizontal line. The electrostatic accelerator board and the force / heat test bed are disposed on a same perpendicular line. The simulation method includes firstly, vacuuming the cavity, and filling superior planet simulation gas to the cavity when vacuum degree of the cavity reaches ultimate pressure degree to allow vacuum degree in the cavity reaches a range of work vacuum degree; secondly, applying a horizontal magnetic field on the electronic cyclotron resonance source, and inputting microwave towards the direction of the electrostatic board to allow the simulation gas in the cavity to generate plasma; thirdly, applying potential difference to the electronic cyclotron resonance source and a support of the electrostatic accelerator board to generate simulated spatial rarefied flow environment; and fourthly, using an electronic balance and a thermocouple on the force / heat test bed for in-situ measurement of a force / heat parameter to implement characterization of a simulated rarefied environment parameter.

Description

technical field [0001] The invention relates to a method for simulating a space rarefied flow environment, which belongs to the technical field of deep space detection. Background technique [0002] Deep space exploration is an important direction for the development of the aerospace industry. In order to make the probe in the cruising state orbit the outer planets (such as Mars and Venus), it is necessary to brake the probe. There are two common braking methods: propeller brakes and pneumatic brakes. Compared with thruster brakes, pneumatic brakes can save 40% of fuel consumption, and are currently the main braking method for deep space exploration. The degree of realization of pneumatic brakes is directly related to the success or failure of deep space exploration missions. [0003] During the aerodynamic braking process, the space rarefied flow environment generated by the aerodynamic force will have an erosion effect on the detector. This erosion effect will reduce t...

AI Technical Summary

Problems solved by technology

Since the detector components after the space flight experiment are difficult to recover, the existing space flight experiments and theoretical calculation research cannot realize the quantitative characterization of the environmental effects of aerodynamic braking

This situation has greatly increased the difficulty of detector design, increased the cost of deep space exploration missions, and adversely affected the development of deep space exploration.

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