A gyrocompass is required to indicate the heading of a land, sea, or air vehicle.

陀螺被用来指示陆上的、海上的或空中的运动体的方向。

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Additional payloads will be integrated into the air vehicle and control segment in the future.

未来，还会有其他载荷被集成到无人机和控制部分中。

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In the meantime, a little more than a year after having started it, NASA quietly dropped its personal air vehicle programme.

与此同时，在启动一年多后，国家航天和航空管理局悄悄地放弃了它的个人航空器项目。

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The M-ATVs are also a major logistical challenge. The Pentagon transports them by air in order to meet the high demand, adding a 10-percent premium to the vehicle's cost.

VOA: standard.2010.08.01

Recent advances in radar technology, and a new unmanned air vehicle that can spot camouflage on a truck and track the vehicle from 16 kilometers high, may arrive in time to help retaliate against the Sept. 11 terrorist attacks.

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Nowadays, behind Skunk Works' highly secure perimeter, engineers reportedly are working on the aviation wonders of tomorrow, including a lightweight cargo plane called the X-55A and a bizarre, blimp-like airship called the P-791 Hybrid Air Vehicle, which has special technology that allows it to take off and land just about anywhere.

CNN: Where planes go to die

AeroVironment has entered four bidding contests for small unmanned air-vehicle defense contracts since 2003 and has won all four.

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