10 Military Aircraft that Never Made it Past the Test Phase
News
published
Ambitious but Flawed Aircraft Concepts
HK-1 Hercules (The Spruce Goose)
HZ-1 Aerocycle
X-13 Vertijet
XC-120 Packplane
XF-85 Goblin
Convair XFY Pogo
A-12 Avenger II
F2Y Sea Dart
Dyna-Soar
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