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Experimental motion assignment method for subject and detached body trajectory capture for continuous on-orbit motion

A motion distribution and trajectory capture technology, which is applied in aerodynamic tests, machine/structural component testing, instruments, etc., can solve the problems of reducing the number of captured trajectory points, low utilization of experimental space, and limited freedom travel.

Active Publication Date: 2021-04-06
中国空气动力研究与发展中心超高速空气动力研究所 +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Because the main body model and the separation body model are in the same flow field, it is very easy to produce the same direction movement, and the degrees of freedom of the main body and the separation body mechanism are limited, the main body or the separation body mechanism will be in a certain position of the main body model or the separation body model. Stop running when one degree of freedom reaches the limit. Obviously, the utilization of the experimental space is extremely low, and the number of captured trajectory points will be greatly reduced.

Method used

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  • Experimental motion assignment method for subject and detached body trajectory capture for continuous on-orbit motion
  • Experimental motion assignment method for subject and detached body trajectory capture for continuous on-orbit motion
  • Experimental motion assignment method for subject and detached body trajectory capture for continuous on-orbit motion

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Embodiment 1

[0055] Such as figure 1 As shown, the separation body mechanism and the main body mechanism of this embodiment are installed in the form of upper and lower structures, and the separation body model and the main body model are placed in the flow field of the hypersonic wind tunnel during the experiment.

[0056] The main body mechanism has six degrees of freedom, which are respectively controlled by six parts in series, including the main body X-direction linear movement mechanism, the main body Y-direction linear movement mechanism, the main body Z-direction linear movement mechanism, the main body α pitch rotation mechanism, the main body The β yaw rotation mechanism and the main body γ roll mechanism; the main body X-direction linear movement mechanism, the main body Z-direction linear movement mechanism, and the main body Y-direction linear movement mechanism are all driven by the motor and the lead screw. The main body α pitch rotation mechanism, the main body β yaw The ro...

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Abstract

The invention discloses a motion distribution method for track capture experiments of a main body and a separate body moving continuously on orbit. This method collects the current pose of the separated body model and the main body model at the current moment, obtains the theoretical pose of the separated body model and the main body model at the next time step, and calculates the relative position change distance in the X, Y, and Z directions; Quantitative proportion distribution of the movement of the main body and the separation body; control the main body and the separation body to complete the X, Y, Z movement and their respective angular movements, and reach the theoretical pose of the main body model and the separation body model at the next time step. This method can avoid the movement of the main mechanism and the separation body mechanism in the same direction, improve the utilization rate of the experimental space, obtain longer experiment time and more captured track points, and improve the service life of the main body mechanism and the separation body mechanism. The advantages of simple and fast, efficient and reliable operation.

Description

technical field [0001] The invention belongs to the technical field of hypersonic wind tunnel tests, and in particular relates to a motion distribution method for a track capture experiment of a main body and a separate body moving continuously on orbit. Background technique [0002] At present, research on aircraft, spacecraft, and flying weapons around the world is inseparable from wind tunnel experiments. Wind tunnel experiments are an effective way to analyze the aerodynamic characteristics of objects, study airflow laws, and study the aerodynamic interaction of adjacent aircraft. The wind tunnel experiment reduces the size of the aircraft, creates a stable hypersonic flow field, and obtains the most realistic and reliable aerodynamic data to verify the aerodynamic characteristics of the aircraft. [0003] The current wind tunnel experiments are not satisfied with only obtaining the aerodynamic characteristics of the aircraft in a fixed attitude, but also need to further...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/00G01M9/02G01M9/06G01M9/08
CPCG01M9/00G01M9/02G01M9/06G01M9/08
Inventor 林敬周张涛钟俊谢志江李佳鑫皮阳军解福田张德炜许晓斌王雄邹东阳赵健宋代平
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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