Defense Review: Piasecki X-49A Speeedhawk Compound Helicopter: 250-mph Black Hawk?
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CharlesA222 · 4 months agoCheyenne was cancelled because the tactics developed around it's speed would have put it directly into the kill envelopes of the Soviet mobile air defense systems that were then coming online. High-speed diving attacks are not a good idea when there's radar-guided machine cannon aiming up at you.