Japan’s Nakajima Ki-11 was a fast monoplane fighter rejected in favor of the maneuverable Ki-10,…
Japan’s Mitsubishi Ki-33 fighter lost to the Ki-27 after tests showed its speed could not…
The Nakajima J5N Tenrai was Japan’s heavily armed twin-engine interceptor, but poor engine performance and…
The Bell YAH-63 was Bell’s contender for the US Army’s Advanced Attack Helicopter program, but…
The North American TF-86F was a two-seat trainer based on the F-86F Sabre, but changing…
The Boeing Model 221 Monomail pioneered streamlined, all-metal aircraft design, but limited engine technology and…
The EFW N-20 Aiguillon was Switzerland’s first jet fighter, but inadequate thrust from its Swiss-built…
The Armstrong Whitworth A.W.52 tested a futuristic flying-wing design and laminar-flow technology, but disappointing results…
The SEPECAT Jaguar M was designed as a carrier-based attack aircraft for the French Navy,…
The Bell ARH-70 Arapaho was meant to replace the US Army’s OH-58D, but rising costs,…
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