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首页> 外文期刊>Journal of Spacecraft and Rockets >Canard–Elevon Interactions on a Hypersonic Vehicle
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Canard–Elevon Interactions on a Hypersonic Vehicle

机译：超音速飞行器上的Canard–Elevon相互作用

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摘要

Airbreathing hypersonic cruise vehicles are typically characterized by long, slender bodies with highly couplednengines and airframes. For a case in which the engine is underslung (below the center of gravity), a large elevonncontrol surface is typically necessary to trimthe vehicle. The elevon is usually placed at the rear of the vehicle to yieldna large moment arm. However, the drawback is that the elevons can cause large perturbations in lift and othernundesirable effects. Canard control surfaces are placed on the forebody of the vehicle to counteract these effects asnwell as aid in low-speed handling. This study looks at how the canards affect the flow over the elevon control surfacesnand, in turn, the controllability of the vehicle in general. A two-dimensional analytical formulation is developed andncompared with both a series approximation solution and a computational fluid dynamics Euler flowfield solution.nThe effect of the canard on the elevon, measured using the elevon effectiveness ratio, decreased as the distancenbetween the control surfaces increased. In general, higher Mach numbers combined with higher canard deflectionnangles resulted in a greater effect on the elevon. Adding a thickness correction, as opposed to assuming that thenairfoils were flat plates, actually decreased, on average, the accuracy of the model when compared with thencomputational data.
机译：呼吸式高超音速巡航车的典型特征是细长的车身，具有高度耦合的发动机和机身。对于发动机悬吊（在重心以下）的情况，通常需要较大的电子控制表面来修整车辆。电动汽车通常放置在车辆的后部，以产生较大的力矩臂。但是，缺点是电子分子会引起升力的较大扰动和其他不必要的影响。鸭绒控制表面放置在车辆的前部，以抵消这些影响，从而有助于低速操纵。这项研究着眼于鸭嘴如何影响电子操纵面的流量，进而影响车辆的可控制性。开发了二维分析公式，并将其与一系列逼近解和计算流体动力学欧拉流场解决方案进行了比较。n随着控制面之间距离的增加，鸭绒对电子素的影响（使用电子素有效性比来衡量）降低了。通常，较高的马赫数和较高的鸭嘴形偏转角对电子的影响更大。与假定翼型是扁平板相反，增加厚度校正实际上与计算数据相比平均降低了模型的精度。

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