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Swerve Solution for Spin-Stabilized Projectiles with Canards: A Revisit
Journal of Spacecraft and Rockets ( IF 1.3 ) Pub Date : 2021-04-28 , DOI: 10.2514/1.a34964
Sijiang Chang 1 , Dongyang Li 1 , Wei Wei 2
Affiliation  

The swerve response of spin-stabilized projectiles to the canard control problem is revisited in the present paper. The study is divided into three steps, including angle-of-attack response, velocity vector response of the projectile, and finally the swerving response. A complex deviation angle is used to describe the motion of the velocity vector of the projectile over the controlled trajectory. From a practical perspective, the deviation angle is usually small, and so studying the swerving motion essentially boils down to investigating the response of the deviation angle. A novel set of swerve solutions with concise expressions is obtained, taking into account the gravitational effect in a more comprehensive manner. The accuracy and effectiveness of the proposed solutions are validated using two spin-stabilized projectiles with canards. The effect of the distance between the center of pressure of the canard surface and the center of mass of the projectile on swerving motion is explained from the standpoint of the velocity vector response of the projectile. The results also demonstrate that gravity plays a pivotal role in predicting the swerve response. The results of this research are expected to be supplementary to those concerning dynamic behavior of spin-stabilized projectiles concluded in current literature.



中文翻译:

带自旋稳定弹丸的Swerve解决方案:再访

本文重新讨论了自旋稳定弹丸对卡纳德控制问题的敏锐响应。研究分为三个步骤,包括攻角响应,弹丸的速度矢量响应以及最后的转弯响应。复偏角用于描述弹丸速度矢量在受控轨迹上的运动。从实际的角度来看,偏差角通常很小,因此研究摆动运动本质上可以归结为研究偏差角的响应。获得了一组新的带有简洁表达式的swerve解,并以更全面的方式考虑了引力效应。拟议的解决方案的准确性和有效性是通过使用带有桨叶的​​两个自旋稳定弹丸来验证的。从弹丸的速度矢量响应的角度,解释了鸭翼表面的压力中心与弹丸的质心之间的距离对转弯运动的影响。结果还表明,重力在预测转弯反应中起着关键作用。预期该研究的结果将补充现有文献中有关自旋稳定弹丸动力学行为的研究结果。

更新日期:2021-04-29
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