首页> 外文会议>International astronautical congress >ANALYSIS OF THE INFLUENCE OF SMALL ASYMMETRIES IN THE DYNAMICS OF MOTION OF SPACE LANDING VEHICLE IN CONDITIONS OF RESONANCE WITH APPLICATION SPECIAL AEROELASTIC BRAKING DEVICES
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ANALYSIS OF THE INFLUENCE OF SMALL ASYMMETRIES IN THE DYNAMICS OF MOTION OF SPACE LANDING VEHICLE IN CONDITIONS OF RESONANCE WITH APPLICATION SPECIAL AEROELASTIC BRAKING DEVICES

机译:应用特殊气动弹性制动装置在共振条件下小不对称性对空间起落架运动动力学的影响分析

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In this paper present an analytical methodology for assessing the impact of small asymmetries in the deflection longitudinal axis of the space landing vehicle from the velocity vector in a resonance mode of motion. The methodology allows to analyze the value of the design parameters and the aerodynamic coefficients on the degree of their influence through the asymmetry of a deviation from the longitudinal axis of the landing vehicle velocity vector. Calculations of the angular motion parameters of the landing vehicle made using the methodology developed by the author based on the assumptions that the rapid development of resonance modes of motion and that the deformation of the aeroelastic inflatable braking device takes place in the spatial angle of attack plane. It is shown that the main factor causing the change in the angular motion parameters of the landing vehicle after passing moment of resonance is the asymmetry of the external shape and size of the velocity head. Depending on the lateral stiffness of aeroelastic inflatable braking device values of the aerodynamic coefficient moment can reach such values that are strongly influenced by the dynamics of the angular motion of the landing vehicle. In some cases, the spatial angle of attack reaches such values that the motion of the landing vehicle with aeroelastic inflatable braking device becomes not stable.
机译:在本文中,提出了一种分析方法,用于根据共振运动模式中的速度矢量评估空间着陆器偏转纵轴上的小不对称性的影响。该方法允许通过与着陆车辆速度矢量的纵轴的偏差的不对称性来分析设计参数和空气动力学系数的值,以评估其影响程度。使用作者开发的方法对着陆车辆的角运动参数进行计算,基于以下假设:运动的共振模式迅速发展,并且气动弹性充气制动装置的变形发生在攻击平面的空间角上。结果表明,在经过共振时刻之后,导致着陆车辆的角运动参数发生变化的主要因素是速度头的外形和尺寸的不对称性。取决于气动弹性的制动装置的侧向刚度,气动系数力矩的值可以达到这样的值,该值受到着陆车辆的角运动的动力学的强烈影响。在某些情况下,空间迎角达到这样的值,使得具有气动弹性充气制动装置的着陆车辆的运动变得不稳定。

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