Decoy bomb towed force test device and method

By designing a decoy munition drag force measurement test device, utilizing the tensioning rope's release and retraction control and real-time observation, combined with a six-component strain gauge force balance and a rectifier protective cover, the instability and large error problems of decoy munition drag force measurement in existing technologies have been solved, achieving safe and accurate drag force measurement and reducing costs and risks.

CN122107884APending Publication Date: 2026-05-29CHINA ACAD OF AEROSPACE AERODYNAMICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACAD OF AEROSPACE AERODYNAMICS
Filing Date
2026-02-09
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing wind tunnel testing methods are difficult to achieve safe and effective measurement of the drag force of decoy munitions, and have problems such as attitude instability leading to collision with the tunnel wall, large measurement errors, and high costs.

Method used

Design a decoy munition towing force measurement test device, including a force balance, a reel, a drive motor, a tension rope, and a wind tunnel angle of attack mechanism support. By controlling the release and retraction of the tension rope and real-time observation, the attitude stability of the decoy munition test model is ensured. Combined with a six-component strain gauge force balance and a rectifier protective cover, the towing force can be accurately measured.

Benefits of technology

It enables safe and accurate measurement of the drag force of decoy munitions, reduces testing costs and risks, improves measurement accuracy and efficiency, and avoids the phenomenon of decoy munitions hitting the cave wall, thus demonstrating good engineering practicality and economy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a decoy bomb drag force test device and method, which comprises a force balance, a pay-off reel, a driving motor, a tensioning rope, a drag line and a wind tunnel attack angle mechanism support, the driving motor is fixedly installed at the rear end of the wind tunnel attack angle mechanism support, and the pay-off reel is drivingly connected with the driving motor; one end of the drag line is connected with a measurement interface of the force balance, the other end of the drag line is connected with the front end of a decoy bomb test model, the tail end of the decoy bomb test model is connected with one end of the tensioning rope, the other end of the tensioning rope is connected with the pay-off reel after passing through the wind tunnel attack angle mechanism support; the pay-off reel realizes the functions of winding and unwinding through the driving motor, and the force balance can obtain the drag force of the decoy bomb test model through force decomposition. The application solves the problems of stable control and accurate measurement of the decoy bomb drag force in the wind tunnel test, reduces the aerodynamic interference, and improves the reliability of the test data and the safety of the test process.
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