Kinetic Analysis of S&A Time for Fuze under Nutation Forces
The work aims to study the effect of projectile nutation on the S&A time of fuze.A mathematical model for the delayed arming time of the fuze S&A under nutation motion was established based on the multi rigid body dynamics and the external ballistic flight theory.The relationship curve between different nutation torques and the delayed arming time of the fuze S&A was obtained through ADAMS simulation.The results showed that the nutation motion made the combined moment of the horizontal rotor increase,and the nutation motion was inversely related to the delayed arming time.The velocity of the projectile out of the muzzle was 450 m/s,the nutation force was 0.35 N,and the delayed arming time was 65 ms,which was 6%different from the delay arming time of 69 ms in other reference.This result verifies that the S&A mathematical model established in this paper has high accuracy,and can provide a theoretical basis for accurately arming fuze and analyzing chamber explosion prob-lems.
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