If they really wanted a 'stealth' helicopter they should have looked into creating something similar to the Comanche which has a covered fan that provides more torque while reducing noise.

如果他们真的想要隐形直升机，他们应该创造一个类似于科曼奇能够覆盖住螺旋桨并能提供更大的扭矩而且能缩减噪音。

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The company is led by retired aerospace scientists who helped develop the Stealth bomber, Gulfstream II and Comanche helicopter.

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The self-propelled artillery system was called Crusader, and the armed scout helicopter was called Comanche.

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Designed to complement Boeing's Apache attack helicopter, the lesser-armed Comanche will operate up to four unmanned drones that fly ahead to scout for enemy targets.

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