Abstract
The stability of a variable-mass flexible spinning projectile under thrust is researched. The spinning projectile is simplified as a Timoshenko beam model, considering gyroscopic effect and shear effect, motion equations are derived based on the finite element method to analyze the effects of variable-mass, follower thrust and spinning speeds on the stability of the spinning projectile. Using the self-adaptive Newmark method, the transverse vibration response of the spinning projectile is solved. The results show that the variable-mass and thrust have influence on the natural frequency, precession frequency and critical speed. When the spinning speed is equal to the critical speed, the projectile occurs a transient resonance under the influence of the mass, and the peak time of the resonance response is slightly delayed compared with the coincidence time.
Translated title of the contribution | Stability Analysis of Variable-Mass Flexible Spinning Projectile under Thrust |
---|---|
Original language | Chinese (Traditional) |
Pages (from-to) | 199-205 |
Number of pages | 7 |
Journal | Yuhang Xuebao/Journal of Astronautics |
Volume | 41 |
Issue number | 2 |
DOIs | |
Publication status | Published - 28 Feb 2020 |