Design and accuracy test of polar moment of inertia measuring equipment for projectile and rocket-Reference-Cited by-同舟云学术

Design and accuracy test of polar moment of inertia measuring equipment for projectile and rocket

Published:2022-08-25 Issue: Volume:44 Page:87-92
ISSN:2345-0533
Container-title:Vibroengineering PROCEDIA
language:en
Short-container-title:Vib. proced.

Author:

Sun Liwei,Wang Shukun,Wang Haokun,Zhao Weihong,Li Junye,Shang Chunmin

Abstract

The moment of inertia is an important mass characteristic parameter. It has a direct impact on the trajectory, flight stability, strike accuracy, and service life of the projectile. To meet the measurement of the polar moment of inertia of large projectiles and arrows, this paper uses the vibration compound pendulum method to measure the polar moment of inertia of large projectiles and arrows, deeply analyzes the measurement principle, and designs a polar moment of inertia test equipment. Through the measurement of standard samples, the measurement accuracy of the equipment is tested, and the causes of error are analyzed. The experimental results show that the maximum relative error is less than 0.5 %, and the relative uncertainty is 0.813 %, which meets the requirements of expected technical indicators.

Publisher

JVE International Ltd.

Subject

General Medicine

Link

https://www.extrica.com/article/22695/pdf

Reference13 articles.

1. P. Chen, H. Wu, and L. Liu, “An improved design of measurement system of polar moment of inertia for missiles,” Journal of Projectiles, Rockets, Missiles and Guidance, Vol. 34, No. 3, pp. 12–14, 2014.

2. Zhao Yan et al., “Identification method for moment of inertia based on torsion pendulum,” Journal of Vibration, Measurement and Diagnosis, Vol. 34, No. 4, pp. 621–624, 2014.

3. C. Liu and W. Hou, “A rotational inertia of measurement error analysis,” Automation and Instrumentation, Vol. 2, pp. 106–107, 2011.

4. Q. Zha et al., “Study on the impact sensitivity of firing factors of self-propelled gun,” Journal of Vibration Engineering, Vol. 30, No. 6, pp. 938–946, 2017.

5. Y. Sun, “Approaches to improve the test accuracy of projectile pole moment of inertia,” Technology and Enterprise, Vol. 2013, No. 21, p. 351, 2013.