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Flight Stability of an Airplane on Mars

机译:一架飞机在火星上的飞行稳定性

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摘要

We compared the flight stability of an airplane on Mars and on Earth. Two kinds of airplanes were used in our analysis: a centimeter-sized indoor airplane with a very thin and light main wing, and a meter-sized airplane flying outdoors. Our comparisons show the following. (1) A longer period is required to damp or diverge disturbances on Mars than on Earth. (2) On Mars, the added mass and added moment of inertia can be ignored for a light wing, whereas the added mass and added moment of inertia cannot be ignored on Earth. (3) The natural circular frequencies in the short period, the phugoid, and the dutch roll modes are smaller on Mars than on Earth. The reduced frequencies, based on the natural circular frequencies on Mars, are smaller than those on Earth. The smaller reduced frequencies and the smaller added mass and added moment of inertia imply that the significance of unsteady aerodynamic force due to fuselage motion is lower on Mars than that on Earth.
机译:我们比较了飞机在火星和地球上的飞行稳定性。我们的分析中使用了两种飞机:一架厘米级的室内飞机,其主翼非常薄而轻;一架米级的飞机在户外飞行。我们的比较显示以下内容。 (1)抑制或分散火星上的干扰所需的时间要比地球上更长。 (2)在火星上,轻机翼可以忽略增加的质量和惯性矩,而在地球上则不能忽略增加的质量和惯性矩。 (3)在火星上,短周期内的自然圆频率,蛇形和荷兰侧倾模式比地球上的要小。根据火星的自然圆周频率,降低的频率小于地球上的频率。较小的减小的频率和较小的增加的质量以及增加的惯性矩意味着在火星上,由于机身运动而产生的不稳定空气动力的重要性要比在地球上低。

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