FAILED PROTOTYPES

World War I

Kettering Bug Aerial Torpedo

 

Between the Wars

Blackburn AD Scout

Witteman Lewis XNBL-1 Barling

Vickers Type 161

 

World War II

Arsenal-Delanne 10C-2

Armstrong-Whitworth AW-52

Burnelli UB-14

 

Curtiss XP-55 Ascender

Kyushu J7W1 Shinden

Miles M.39B Lilebulla

 

N. American NAA 133 Seahorse

Northrop XP-56 Black Bullet

Republic XF-12 Rainbow

 

Republic XP-47J Superbolt

Vought V-173 Flapjack

Vought XF5U Flying Pancake

 

Post War

Arsenal VB-10

Bristol Brabazon

Consolidated XP-81

 

Curtiss XP-87 Blackhawk

Ilyushin IL-40

Nord 500

 

Piper PA-48 Enforcer

SNCASE Se-700
 

Modern

Bell XV-15

Eurocopter X-3

Grumman X-29

 

Gulfstream Peregrine 600

Learavia Learfan

Lockheed AH-56 Cheyenne

 

Northrop YA-9

Northrop YF-23

Piasecki X-49

 

Textron AirLand Scorpion

 

Paper Airplanes (Never Made it Off the Drawing Board)

BMW Schnellbomber I

Haunebu II

Henschell P-75

 

Ushakov LPL Flying Submarine