The desire to increase landing safety margins for the Space Shuttle Orbiter led to decision to implement a Drag Parachute System into the Orbiter Vehicle.

航天飞机轨道器设置阻力伞的目的在于增加其着陆的安全性。

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The vehicle will be jacked up and its wheels secured to enable the Orbiter Transport System, or OTS, to slide underneath it for the short trip.

车辆将被静压和车轮被确保安全，以使车辆在轨道交通系统短期旅程下面滑行。

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The orbiter and return vehicle will orbit the moon, while the lander and ascender will land on the moon.

轨道器和返回器将绕月运行，而上升器和着陆器则将登陆月球。

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That will be followed by deployment of an unmanned lunar orbiter mission along with a nuclear-powered landing vehicle to support lunar rover delivery and sample return operations.

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As you know, we've never had an airplane fly through any atmosphere outside the Earth, and we believe that an airplane, an aerial vehicle, combines the best features of an orbiter and a rover.

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