Power Plant: Two F404-GE-402 afterburning engines, each in the 18,000 pound thrust class, which results in a combat thrust-to-weight ratio greater than 1-to-1.
Electrodynamic tethers with low thrust-to-weight ratios can only perform orbital transfers over a large number of revolutions, which poses a real challenge to short time scale optimal control methods.
电动力绳系卫星的推力幅值较小且方向固定,完成轨道机动任务的周期长,其最优控制问题的求解比较困难。
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To achieve their dream, the team had to design a flapping wing with enough lift and thrustto overcome the aircraft's weight.