Test And Analysis Of Dynamic Parameters Of High Speed Rotating Projectile Fuze

As the critical component of projectile, whether the fuze can realize the function of arming and priming at the right time directly affects whether the projectile can complete predetermined strategic and tactical goals or not. If the fuze realizes arming and priming ahead of time, there will be some serious faults such as early explosion and bore premature. This topic is proposed under the circumstances of fuze fault on a high-speed rotating projectile. In order to solve the fuze fault at its most fundamental, a test of the force and analysis of the data on the fuze during each stage of the projectile motion is required. It can provide data support for solving this problem, and provide data for the improvement of the projectile and fuze.This paper is in a test requirement of fuze fault of a high-speed rotating projectile, guided by the dynamic measurement theory which analyzes the characteristics of measured signal and test environment and puts forward the design criteria and test scheme.The main contents are summarized as below:(1) Describe the basic theory of testing physical quantity used sensor and the principle of acceleration sensor and its lateral effect, which provides the basis for the following system design and data analysis. The measured signal value is calculated by the empirical formula, the test environment characteristics are analyzed.(2) According to test criterion and test scheme, preformed the sensor selection, the hardware circuit design, the software system design, the mechanical structure design, the buffer protection design. Finally proceeded the bounce table experiments to verify the correctness and feasibility of the test plan.(3) Analyze the triaxial acceleration signal, rotating speed signal, set-forward acceleration signal of fuze which the instrument got in range test. The attenuation trend of the rotating speed signal in the projectile flight is made and the envelope of rotating speed signal is extracted. The analysis of the axial and two radial acceleration signals is carried out from the interior ballistic and external ballistics parts. The cause of the frequency component of the set-forward acceleration signal in the muzzle is discussed.. The measured data provides a basis for analyzing the fault of fuze.