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FLIGHT SIMULATION OF A HYBRID PROJECTILE TO ESTIMATE THE IMPACT OF LAUNCH ANGLE ON RANGE EXTENSION

机译:混合弹丸的飞行模拟以估算发射角对射程扩展的影响

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A Hybrid Projectile (HP) currently under design at West Virginia University was simulated to estimate the effects of barrel launch angle and flight position of wing deployment. The projectile is similar to a standard 60mm mortar, except that is has been equipped to achieve extended range. A Simulink model was developed based upon external ballistics. The flight performance of the WVU-HP-60 was compared to a standard M720 60mm mortar. The developed HP was considered to be a tube-launched UAV, that transforms, not directly after launch but sometime after for optimal gliding, and must be modeled with different flight profiles because after transformation the aerodynamics drastically change. Two models of the UAV were created to allow for design of controllers. They were the launch model and the projectile flight model. It was found that the projectile may exit the barrel with a two degree variation of launch angle. The simulations show that range extension is still viable, with this barrel exit variation, to within 10% of the maximum achievable range. A confidence area was also developed to determine how far the launch angle and wing deployment position could stray and still maintain a significant amount of range extension.
机译:西弗吉尼亚大学目前正在设计一种混合弹丸(HP),以估算机筒发射角度​​和机翼部署飞行位置的影响。射弹类似于标准的60mm迫击炮,除了它的射弹能够达到扩大的射程。基于外部弹道技术开发了Simulink模型。 WVU-HP-60的飞行性能与标准的M720 60mm迫击炮相比。发达的HP被认为是一种管式无人飞行器,它不仅可以在发射后立即进行转换,而且可以在最佳滑翔后的某个时间进行转换,并且必须以不同的飞行轮廓进行建模,因为转换后空气动力学会发生巨大变化。创建了两种无人机模型以允许设计控制器。它们是发射模型和弹丸飞行模型。已经发现,弹丸可能以发射角有两个度的变化离开枪管。仿真表明,在这种枪管出口变化的情况下,范围扩展仍是可行的,范围不超过最大可实现范围的10%。还开发了一个置信区域,以确定发射角和机翼展开位置可能偏离多远,并且仍保持大量的射程扩展。

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