Pilots must rely on visual flight rules that are often referred to as' see and avoid. '.

飞行员必须依靠常被称为“看到并避开”的目视飞行规则。

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He has built a tiny robotic fly called Robofly and a 3-d visual flight simulator called Fly-O-Vision.

他研发了一款名叫Robofly的微型机器人苍蝇，以及一种名叫fly - o - Vision的三维可视飞行模拟器。

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A civil aircraft performing visual flight shall observe visual flight rules and keep a safe separation from other aircraft and ground obstacles.

进行目视飞行的民用航空器，应当遵守目视飞行规则，并与其他航空器、地面障碍物体保持安全距离。

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But aircraft operating under "visual flight rules" still are prohibited from flying within 25 nautical miles of New York and Washington.

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And news reporting aircraft, traffic planes and helicopters, and airships and blimps operating under visual flight rules continue to be grounded.

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The ban applies to private planes whose pilots do not file flight plans and who rely on visual flight rules (VFR).

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