Test method and device for impacting space debris protective structure with laser driving ball

Abstract

The invention discloses a test method and device for impacting a space debris protective structure with a laser driving ball. The test method includes the steps that a target structure of the ball isdetermined; the initial state of the ball during operation is determined; a laser test is conducted, so that the diameter of a critical ball leading to a failure of the protective structure is obtained; the test device comprises the ball, a laser emitter, the target structure, the protective structure, a streak camera and a framing camera. According to the test method and device, operation is simple, a designed laser ablation driving ball target device realizes high-precision measurement and diagnosis during testing, a technical means is provided for a super-high speed impact test for the space debris protective structure larger than or equal to 10 km / s, and the engineering demand for a spacecraft space debris protective design is met.

Description

technical field [0001] The invention relates to the technical field of a simulated spacecraft ball impact test, in particular to a method and device for testing a laser-driven ball impact space debris protection structure. Background technique [0002] Space debris poses a great threat to the safety of spacecraft in orbit. The speed of its launch and collision with the spacecraft is as high as 3-15km / s, which will cause serious damage to the spacecraft or even explode. Value satellites are equipped with space debris protection structures to improve their ability to resist space debris; due to the high cost of on-orbit verification, the ground simulated ultra-high-speed impact test has become the main means of evaluating the protective structure; internationally recognized ground tests usually use ultra-high-speed The high-speed aluminum spherical ball impacts the protective structure, and the critical ball diameter of the protective structure failure is used to characterize ...

AI Technical Summary

Problems solved by technology

[0003] Light gas guns are usually used to launch ultra-high-speed pellets to simulate the impact of space debris, but limited by the launch capability of light gas guns, at present, only standard verification tests of <10km / s can be carried out at home and abroad; and other technologies can achieve a launch speed of ≥10km / s, but the launched object is a non-aluminum non-spherical projectile, which is a non-standard impact test and cannot be used as a reference basis for spacecraft engineering design, which has poor guidance for engineering design

[0004] In summary, the current ground ultra-high-speed impact test method cannot achieve full coverage of space debris impact speeds of 3-15 km / s, and cannot meet the needs of space debris protection structures for ultra-high-speed impact ground simulation research. It is urgent to develop a method that can achieve A new method for ultra-high-speed impact test of ≥10km / s protective structure, which is the guiding basis for the design of spacecraft space debris protection engineering

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