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System and method for testing influence of plume field of engine in air to laser transmission

A test system and plume field technology, applied in signal transmission systems, aerodynamic tests, and machine/structural component testing, etc.

Active Publication Date: 2010-11-03
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The test conditions under atmospheric conditions are very harsh. Since the rocket engine is fixed on the test bench, the strong noise and impact force during ignition will cause a large vibration impact on the test environment, and the test personnel cannot approach the site and must be outside the isolation area. Work

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  • System and method for testing influence of plume field of engine in air to laser transmission
  • System and method for testing influence of plume field of engine in air to laser transmission
  • System and method for testing influence of plume field of engine in air to laser transmission

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Embodiment Construction

[0009] The principle of this patent is as figure 1 As shown, the test site is provided with an isolation area with a length and a width of about 50m and surrounded by guardrails 11. After the engine is ignited, the test personnel evacuate from the isolation area to ensure safety. The high-thrust rocket engine 2 is fixedly installed on the working platform 1, with the central axis of the engine as the reference line, and two 1064nm infrared measurement lasers 3 and 1064nm infrared reference laser 4 of the same specification are fixedly installed on one side of it, and the optical paths of the two lasers are parallel to each other . Among them, the measuring laser optical path is equal to the reference line as the main optical path, and the reference laser optical path is higher than the highest point of the engine plume as the reference optical path. On the other side of the reference line, two infrared area array measurement cameras 9 and an infrared area array reference came...

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Abstract

The invention discloses a system and a method for testing influence of a plume field of a high-thrust rocket engine to laser transmission under atmospheric conditions. The system carries out data acquisition and comparison by adopting two analysis light paths to eliminate the influence of ambient vibration to a test result, carries out remote control by adopting a wireless local network, and then analyzes laser energy attenuation, directing deflection and light beam quality deterioration conditions caused by the plume field by adopting an off-line image processing method so as to completely estimate the influence of the plume field of the high-thrust rocket engine to laser transmission characteristics under atmospheric conditions.

Description

technical field [0001] This patent relates to photoelectric detection technology, and specifically refers to a test system and method for testing the influence of a large-thrust engine plume field on laser transmission in the atmosphere. It is used to test the impact of a large-thrust rocket engine plume field on laser transmission under atmospheric conditions. The influence of characteristics. Background technique [0002] In the process of space exploration, the laser sensor on the planetary lander is an important test equipment to ensure its smooth landing. The adjustment of the flight attitude of the lander is realized by rocket engines, including small-thrust engines and high-thrust engines. The plume field of a high-thrust rocket engine is a high-temperature and strong particle flow field, and the transmission path of the laser sensor will pass through it, so that the transmission characteristics of the laser will be changed by the plume field, which will affect the a...

Claims

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Application Information

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IPC IPC(8): G01M9/00G01J1/16G01K17/00G08C17/02
Inventor 万雄王建宇黄庚华舒嵘
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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