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Acta Armamentarii ›› 2013, Vol. 34 ›› Issue (6): 797-800.doi: 10.3969/j.issn.1000-1093.2013.06.022

• Research Notes • Previous Articles    

Effect of Centroidal Deviation on Measurement of Rotational Inertia of Projectile Body by Torsion Pendulum Method

ZHANG Xin-ming1, ZHENG Ying-jie1, CHI Zhan-duo2   

  1. 1. College of Mechanical and Electric Engineering,Changchun University of Science and Technology, Changchun 130022,Jilin,China; 2. Jilin Institute of Metrology,Changchun 130022,Jilin,China
  • Online:2013-08-27
  • Contact: ZHANG Xin-ming E-mail:zxm@ cust. edu. Cn

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Abstract: The effect of centroidal deviation on rotational inertia measurement is analyzed, and the equations of composite torsion-pendulum which describe the projectile movement rule by considering the effect of centroidal deviation and a calculation method for eliminating the effect of centroidal deviation are presented. The example calculation is conducted. The result shows that the effect of centroidal deviation can not be ignored. Accuracy of the moment of inertia is greatly improved by the method of torsion pendulum which considering the effect of centroidal deviation, the engineering practical value of the torsion pendulum as well as improved.

Key words: ordnance science and technology, composite torsion-pendulum equation, centroidal deviation, rotational inertia

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