PZL-230 Skorpion was a Polish STOL ground-attack aircraft concept with advanced features, but it was…
Convair Model 48 Charger was a STOL light attack aircraft designed for close support, but…
Northrop X-21A tested laminar flow control to reduce drag and improve efficiency, proving the concept…
Northrop YF-17 lost the US Air Force’s Lightweight Fighter contest but evolved into the F/A-18…
Hughes XV-9 tested hot-cycle propulsion with tip-jet rotors in the 1960s, proving the concept but…
Promavia Jet Squalus was a lightweight multi-role trainer designed for military and civilian use, but…
Waco Model W Aristocraft was an unconventional postwar light aircraft with innovative design, but despite…
Boeing Skyfox aimed to modernize the aging T-33 into a low-cost jet trainer with better…
Tupolev Tu-110 was a four-engine Soviet jetliner developed from the Tu-104 but canceled in 1958…
Boeing XB-15, a 1930s “super bomber,” set payload records but was canceled due to low…
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