Science Fair Project Encyclopedia

Science Fair Project Encyclopedia Contents Page

List of military aircraft of the United States

This list of military aircraft of the United States includes prototype, pre-production and operational types. Prototypes are normally prefixed with "X" and often unnamed (note that these are not the same as the experimental X-planes, which are not generally expected to go into production), while pre-production models are usually prefixed "Y".

The United States Air Force currently employs a designation and naming system to identify all aircraft type with distinct names. Until 1962, both the Army and Air Force maintained one system, while the US Navy maintained a separate system. In 1962, these were unified into a single system heavily reflecting the Army/Air Force method. For more complete information on the workings of this system, refer to United States Department of Defense Aerospace Vehicle Designations.

USAF A-10 Thunderbolt II

Attack

Old system, Army Air Corps/Army Air Force/Air Force

A-2 - Douglas
A-3/A-3/A-5/A-6 Falcon - Curtiss
XA-7 - Fokker, losing competitor to A-8
A-8 Shrike - Curtiss
A-9 - Lockheed
YA-10 - Curtiss
A-11 - Consolidated
A-12 Shrike - Curtiss
YA-13 - Northrop
A-14 Shrike
A-15 - Martin
XA-16 - Northrop
A-17 - Northrop
A-18 Shrike
A-19 - Vultee
A-20 Havoc - Douglas
A-21 - Stearman
A-22 Maryland
A-23 Baltimore
A-24 Dauntless
A-25 Shrike
A-26 Invader - Douglas
A-27 - North American
A-28/A-29 Hudson - Lockheed
A-30 Baltimore
A-32 - Brewster
A-33 - Northrop
A-34 - Brewster
A-31/A-35 Vengeance - Vultee
A-36 Apache
A-37
A-38 Grizzly
A-39 - Kaiser-Fleetwings
A-40 - Curtiss
A-41 - Vultee
A-42 Mixmaster
A-43 Blackhawk
A-44 - Consolidated
A-45 - Martin

Navy

AD Skyraider - later A-1
A2D Skyshark
A3D Skywarrior - later A-3
A4D Skyhawk - later A-4
AF Guardian - Grumman
A2F Intruder - later A-6
AH Phantom II - later F-4
AJ Savage - North American
A2J - North American
A3J Vigilante later A-5
AM Mauler - Martin
AU Corsair
A2U Cutlass

Unified system, after 1962

A-1 Skyraider, USA 2003

A-1 Skyraider - Douglas, was AD
A-2 Savage - North American, was AJ
A-3 Skywarrior - Douglas
A-4 Skyhawk - McDonnell Douglas
A-5 Vigilante - North American
A-6 Intruder - Grumman
A-7 Corsair II - Vought
A-7 Strikefighter - LTV-Vought
AV-8 Harrier II - McDonnell Douglas and British Aerospace
Northrop A-9
A-10 Thunderbolt II "Warthog" - Republic
A-12 - Canceled Navy stealth plane
A-37 Dragonfly - Cessna

Attack helicopters

AH-1 Cobra - Bell
AH-6J Little Bird - Boeing (McDonnell-Douglas) (Hughes)
AH-56 Cheyenne
AH-63 King Cobra
AH-64 Apache - Boeing (McDonnell-Douglas) (Hughes)
RAH-66 Comanche - Boeing-Sikorsky

Fixed wing gunships

AC-47 Spooky
AC-54 Skymaster
AC-119 Shadow/Stinger
AC-123 Provider
AC-130 Spectre/Spooky - Lockheed

P-3 Orion of the US navy

Anti Submarine Warfare (ASW)

S-2 Tracker - Grumman
S-3 Viking - Lockheed
P2V Neptune - (also P-2H) Lockheed
P-3 Orion - Lockheed
SC Seahawk - Curtiss
SH-3 Sea King - Sikorsky
SH-2 Seasprite - Kaman Aerospace
SH-60 Sea Hawk - Sikorsky
Multimission Maritime Aircraft - Boeing

Bomber

Old system, Army Air Corps/Army Air Force/Air Force

XB-1 - Huff-Daland (Keystone)
B-2 Condor - Curtiss
B-3 - Keystone
B-4 - Keystone
B-5 - Keystone
B-6 - Keystone
Y1B-7 - Douglas
XB-8 - Fokker
Y1B-9 - Boeing
B-10 - Martin, first mass-produced monoplane bomber
YB-11 - Douglas
B-12 - Martin, B-10 variant, Wright engines
XB-13 proposed B-10 variant, cancelled
XB-14 - Martin, B-10 variant
XB-15 - Boeing
XB-16 proposed by Martin, cancelled before any built
B-17 Flying Fortress - Boeing
B-18 Bolo - Douglas, replacement for B-10
XB-19 - Douglas
Y1B-20 - improved XB-15, cancelled
XB-21 - North American
XB-22 - improved B-18 proposed by Douglas, cancelled
B-23 Dragon - Douglas, replacement for B-18
B-24 Liberator - Consolidated
B-25 Mitchell - North American
B-26 Marauder - Martin
- B-26 Invader - redesignated A-26 Invader
XB-27 - high-altitude B-26 proposed by Martin, cancelled
XB-28 Dragon - North American
B-29 Superfortress - Boeing, replacement for B-17 and B-24
XB-30 - Lockheed proposal
XB-31 - Douglas proposal

USAF B-52

B-32 Dominator - Consolidated
B-33 Super Marauder - Martin, proposed four engine modified version of B-26
B-34 Lexington - Lockheed
B-35 - Northrop
B-36 - Convair
B-37 - Lockheed
XB-38 Flying Fortress
XB-39 Superfortress
YB-40 Flying Fortress
XB-41 Liberator
XB-42 Mixmaster
B-43 Jetmaster
XB-44 Superfortress
B-45 Tornado - North American
B-46 - Consolidated
B-47 Stratojet - Boeing
B-48 - Martin
B-49 - Northrop
B-50 Superfortress - Boeing
XB-51 Production aircraft were to be "B-51 Panther"
B-52 Stratofortress - Boeing, first intercontinental nuclear bomber
B-53 - Convair
B-55 Stratojet
B-56 Stratojet
B-57 - (Canberra) Martin/English Electric
B-58 Hustler - Convair, first mass-produced supersonic bomber
B-59 - Boeing
YB-60 - Convair
- B-61 - missile designation
- B-62 - missile designation
- B-63 - missile designation
- B-64 - missile designation
- B-65 - missile designation
B-66 - Douglas
- B-67 - missile designation
XB-68 - Martin
B-69 - Lockheed Neptune in Air Force service
XB-70 Valkyrie - North American
- SR-71 - reconnissance aircraft allocated a number in this sequence

Navy

BD Havoc
BG - Great Lakes
B2G - Great Lakes
BM - Martin
BN - Naval Aviation Factory
BT - Northrop
B2T - Northrop
BTD Destroyer - Douglas
BY Fleetster
B2Y - Consolidated
BFB - Boeing
BFC Goshawk
BF2C Goshawk
BTC - Curtiss
BT2C - Curtiss
BTD Destroyer
BT2D Destroyer II
BTK - Kaiser-Fleetwings
BTM Mauler
MB - Martin
Curtiss SBC - Curtiss
SB2C Helldiver - Curtiss
SBD Dauntless - Douglas
SB2U Vindicator - Vought
TBD Devastator - Douglas
TB2D Skypirate - Douglas
TBF Avenger - Grumman
TBY Sea Wolf - Consolidated
T2D - Douglas

Unified system, after 1962

USAF B-2 Spirit

B-1 Lancer - Rockwell
B-2 Spirit - Northrop Grumman, stealth bomber

Cargo/Transport

Old system, Army Air Corps/Army Air Force/Air Force

C-1 Millirole
C-2 - Fokker
C-3 - Ford
C-4 - Ford
C-5 - Fokker
C-6 - Sikorsky
C-7 - Fokker
C-8 - Fairchild
C-9 - Ford
C-10 Robin
C-11 Fleetster
C-12 Vega
C-14/C-15/C-16 - Fokker
C-17 Super Vega
C-18 Monomail
C-19 Alpha
C-20 - Fokker
C-21 Dolphin
C-22 Fleetster
C-23 Altair
C-24 Yic
C-25 Altair
C-26 Dolphin
C-27 Airbus
C-28 - Sikorsky
C-29 Dolphin
C-30 Condor
Krei.-Rei. C-31
C-32 - Douglas
C-33 - Douglas
C-34 - Douglas
XC-35 Electra - Lockheed
C-36 Electra - Lockheed
C-37 Electra - Lockheed
C-38 - Douglas
C-39 - Douglas
C-40 Electra
C-41 - Douglas
C-42 - Douglas
C-43 Traveller
C-44 - Messerschmitt
C-45 Expeditor
C-46 Commando - Curtiss
C-47 Skytrain - Douglas DC-3
C-48 - Douglas DC-3
C-49 - Douglas DC-3
C-50 - Douglas DC-3
C-51 - Douglas DC-3
C-52 - Douglas DC-3
C-53 Skytrooper - Douglas DC-3
C-54 Skymaster - Douglas DC-4
C-55 Commando
C-56 Lodestar
C-57 Lodestar
C-58 Bolo
C-59 Lodestar
C-60 Lodestar
C-61 Forwarder
C-62 - Waco
C-63 Hudson
C-64 Norseman
C-65 Skycar
C-66 Lodestar
C-67 Dragoon
C-68 - Douglas DC-3
C-69 Constellation
C-70 Nightingale
C-71 Executive
C-72 - Waco
C-73 - Boeing
C-74 Globemaster - Douglas
C-75 Stratoliner
C-76 Caravan
C-77 - Cessna
C-78 Bobcat
C-79 - Junkers
C-80 - Harlow
C-81 Reliant
C-82 Packet - Fairchild
C-83 Coupe
C-84 - Douglas DC-3
C-85 Orion
C-61 Forwarder
C-87 Liberator Express
C-88 - Fairchild
C-89 - Hamilton
C-90 - Luscombe
C-91 - Stinson
C-92 - Akron-Funk
C-93 Conestoga
C-94 - Cessna
C-95 Grasshopper
C-96 - Fairchild
C-97 Stratofreighter - Boeing
C-98 Clipper
XC-99 - Convair
C-100 Gamma
C-101 Vega
C-102 Speedster
C-103 - Grumman
C-104 - Lockheed
C-105 - Boeing
C-106 - Cessna
C-107 Skycar
C-108 Flying Fortress
C-109 Liberator
C-110 - Douglas
C-111 Super Electra
C-112 Liftmaster
C-113 Commando
C-114 Skymaster
C-115 Skymaster
C-116 Skymaster
C-117 Super Skytrain - Douglas
C-118 Liftmaster - Douglas DC-6
C-119 Flying Boxcar - Fairchild
C-120 Packplane - Fairchild
C-121 Constellation
C-122 - Fairchild
C-123 Provider - Fairchild
C-124 Globemaster II
C-125 Raider
C-126 - Cessna
C-127 - Boeing
C-128 - Fairchild
C-129 Super Skytrain
C-130 Hercules - Lockheed
C-131 Samaritan - Convair
C-132 - Douglas
C-133 Cargomaster - Douglas
C-134 Pantobase
C-135 Stratolifter - Boeing 707
C-137 Stratoliner - Boeing 707 including "Air Force One"
Fairchild C-138 - projected military Fairchild F-27 (license-built Fokker F-27 Friendship), did not proceed.
Lockheed C-139 - was to have been a transport version of the P-2 Neptune, did not proceed
C-140 Jetstar - Lockheed
C-141 Starlifter - Lockheed
XC-142 - Chance Vought
Curtiss C-143 - projected designation - became Curtiss X-19

Navy

R3Y Tradewind - Convair

Unified system, after 1962

C-1 Trader
C-2 Greyhound - Grumman
C-3 - Martin
C-4 Academe - Gulfstream
C-5 Galaxy - Lockheed
C-6 Ute
C-7 Caribou - de Havilland Canada
C-8 Buffalo
C-9 Skytrain II - Douglas DC-9
C-10 Extender
C-11 Gulfstream II - Gulfstream
C-12 Huron - Beech 200
C-13 - skipped
C-14 - Boeing
C-15 - McDonnell Douglas
C-16 - assigned to Cessna Caravan but never used
C-17 Globemaster III - Boeing
EC-18 - original designation for E-7
C-19 - Boeing
C-20 Gulfstream III - Gulfstream
C-21 Learjet - Learjet
C-22 - Boeing 727
C-23 Sherpa - Shorts 330
C-24 - Boeing
VC-25 - Boeing "Air Force One"
C-26 Metroliner - Fairchild
C-27 Spartan - Alenia
C-28 - Cessna
C-29 - BAE SYSTEMS
C-30 - apparently skipped
C-31 Troopship - Fokker F.27M
C-32 - Boeing 757
C-33 - cancelled Boeing 747 variant
C-34 - apparently skipped
C-35 - Cessna
C-36 - apparently skipped
C-37 Gulfstream V
C-38 Courier - Israeli Aircraft Industries
C-39 - apparently skipped
C-40 Clipper - Boeing

Cargo Helicopter

US Army Chinook loads a Howitzer Gun

CH-3 Sea King - Sikorsky
CH-19 Chickasaw - Sikorsky
CH-21 Shawnee - Piasecki
CH-34 Chocktaw - Sikorsky
CH-37 Mojave - Sikorsky
CH-46 Sea Knight - Boeing
CH-47 Chinook - Boeing
CH-53 Sea Stallion - Sikorsky nicknamed "Jolly Green Giant"
CH-54 Tarhe - Sikorsky
CH-62 - Boeing

Electronic

E-1 Tracer - Grumman
E-2 Hawkeye - Grumman
E-3 Sentry or AWACS - Boeing
E-4 - Boeing
E-6 Mercury - Boeing
E-8 Joint STARS - Boeing
E-9 - de Havilland
E-10 MC2A - Boeing

USAF E-3 Sentry

EA-1 Skyraider - Douglas
EA-3 Skywarrior - Douglas
EA-4 Skyhawk
EA-6 Prowler - Grumman
EA-18 Growler - Boeing/Northrop Grumman
EB-47 Stratojet
ERB-47 Stratojet
EB-57 Canberra
EB-66 Destroyer
EC-18 Aria - Boeing
EC-20 Gulfstream III
EC-24 - McDonnell Douglas
EC-47 Skytrain
EC-54 Skymaster
EC-121 Warning Star - Lockheed
EC-130 Compass Call - Lockheed
EC-135 Looking Glass - Boeing
EF-4 Phantom II
EF-10 Skynight
ERF-80 Shooting Star
EF-82 Twin Mustang
EF-105 Thunderchief
EF-111 Raven - General Dynamics
ES-2 Tracker
ES-3 Shadow - Lockheed
EP-3 Aries II - Lockheed
EH-1 Quick Fix
EH-6 Cayuse
EH-60 Quick Hawk
Aerial Common Sensor

Fighter

Navy, from 1922

(alpha by Navy-assigned mfgr letter)

F2A - Brewster
F3A - Brewster version of Corsair
FB - Boeing
F2B-1 - Boeing
F3B Seahawk - Boeing
F4B - Boeing
F5B - naval designation of Boeing XP-15
F6B - Boeing
F7B - Boeing
F8B - Boeing
FC, F2C, F3C paper designation of racers
F4C - Curtiss
F5C skipped
F6C Hawk - Curtiss
F7C Seahawk - Curtiss
F8C Falcon - Curtiss
F8C-2 Helldiver - Curtiss, different from F8C-1 and F8C-3
F9C Sparrowhawk - Curtiss
F10C Helldiver - Curtiss, modified F8C-2
F11C Goshawk - Curtiss Hawk II or Goshawk, redesig BFC
F12C - Curtiss, became SBC
F13C - Curtiss
F14C - Curtiss contra-rotating propellors
F15C - Curtiss jet + turboprop
FD - Douglas
F2D Banshee - Douglas, later redesignated F2H
F3D Skyknight - Douglas
F4D Skyray - Douglas, later F-6
F5D Skylancer - Douglas, semi-operational
F6D Missileer - Douglas
FF Fifi - biplane, first Navy fighter by Grumman
F2F - Grumman
F3F - Grumman
F4F Wildcat - Grumman
XF5F Skyrocket - Grumman twin-engine carrier-based fighter prototype
F6F Hellcat - Grumman
F7F Tigercat - Grumman
F8F Bearcat - Grumman
F9F Cougar - (Panther variant) Grumman
F9F Panther - Grumman
XF10F Jaguar - Grumman variable-wing prototype
F11F Tiger - Grumman, first supersonic aircraft in Navy
F12F - Grumman, proposed all-weather interceptor
Eberhart FG, F2G
FG - Goodyear version of Corsair with fixed wings
Goodyear F2G - proposed low-altitude Corsair
Hall FH
FH Phantom - McDonnell
F2H Banshee - McDonnell, later F-2
F3H Demon - McDonnell, later F-3
F4H Phantom II - McDonnell, later F-4
FJ - Berliner-Joyce
F2J - Berliner-Joyce, P-16 in AAC
FJ Fury - North American
FL - Loening
FL Airabonita - Bell, USN version of P-39
F2L Kingcobra - Bell, USN version of P-63
FM - General Motors version of Wildcat
FM Wildcat - General Motors built version of F4F
F2M Wildcat - General Motors built version of F4F, different engine to FM
F3M - General Motors built version of F8F
Seversky FN
FO Lightning - Lockheed, USN version of P-38
FR Fireball - Ryan
XF2R Dark Shark - Ryan
FT - Northrop, USN A-17 derived design
F2T Black Widow - Northrop, USN trainer version of P-61
FU, F2U, F3U
F4U Corsair - Chance Vought
XF5U - Chance Vought's "flying pancake", built but never flown
F6U Pirate - Chance Vought
F7U Cutlass - Chance Vought
F8U Crusader - Chance Vought
Lockheed FV
F2W - Wright
F3W Apache - Wright
FY Pogo - Convair
F2Y Sea Dart - Convair

Air Force, pre-1948

(designated P- for 'Pursuit')

P-1 Hawk
P-2 Hawk
P-3 Hawk
Boeing XP-4
P-5 Hawk
P-6 Hawk
Boeing XP-7
Boeing XP-8
Boeing XP-9
Curtiss XP-10
P-11 Hawk
Boeing P-12
XP-13 Viper
Curtiss XP-14
Boeing XP-15
Berliner-Joyce P-16
XP-17 Hawk
Curtiss XP-18
Curtiss XP-19
YP-20 Hawk
Curtiss XP-21
XP-22 Hawk
XP-23 Hawk
Lockheed XP-24
Consolidated Y1P-25
P-26 Peashooter
Consolidated YP-27
Consolidated YP-28
Boeing YP-29
Consolidated P-30
Curtiss XP-31
Boeing XP-32
Consolidated XP-33
Wedell-Williams XP-34
Seversky P-35
P-36 Hawk
Curtiss XP-37
P-38 Lightning
P-39 Airacobra
Curtiss P-40
Seversky XP-41
Curtiss XP-42
P-43 Lancer
P-44 Rocket
Bell XP-45
Curtiss XP-46
P-47 Thunderbolt
Douglas XP-48
Lockheed XP-49
Grumman XP-50
P-51 Mustang
Bell XP-52
Curtiss XP-53
XP-54 Swoose Goose
XP-55 Ascender
XP-56 Black Bullet
Tucker XP-57
XP-58 Chain Lightning
P-59 Airacomet
Curtiss P-60
P-61 Black Widow
Curtiss XP-62
P-63 Kingcobra
North American P-64
Grumman XP-65
P-66 Vanguard
XP-67 Bat
XP-68 Tornado
Republic XP-69
Douglas P-70
Curtiss XP-71
Republic XP-72
Hughes P-73
P-75 Eagle
Bell XP-76
Bell XP-77
North American XP-78
XP-79 Flying Ram

Air Force, from 1948

P-80/F-80 Shooting Star- Lockheed
Convair XP-81
F-82 Twin Mustang
Bell XP-83
P-84/F-84 Thunderjet - Republic Aircraft Company
XP-85/XF-85 Goblin - McDonnell
F-86 Sabre - North American
XP-87/XF-87 Blackhawk - Curtiss
XP-88/XF-88 Voodoo - Curtiss
F-89 Scorpion - Northrop
XF-90 - Lockheed
XF-91 Thunderceptor - Republic
XF-92A - Convair
YF-93A - North American
Lockheed F-94 - F-94C Starfire
YF-95A - North American
YF-96A - Republic
F-97 Starfire - Lockheed
Hughes XF-98 became Hughes Falcon missile
F-99 became Bomarc missile
F-100 Super Sabre - North American
F-101 Voodoo - McDonnell
F-102 Delta Dagger - Convair
Republic XF-103 - Republic
F-104 Starfighter - Lockheed
F-105 Thunderchief - Republic
F-106 Delta Dart - Convair
F-107 - North American
XF-108 Rapier - last fighter project by North American
Bell XF-109 - Bell; supersonic VTOL fighter; never flew
F-110 Spectre - became F-4C Phantom II
F-111 Aardvark - General Dynamics
F-112 to F-116 used for foreign aircraft eval.
F-117 Nighthawk - Lockheed

Unified system, from 1962

F-1 Fury - was North American FJ
F-2 Banshee - was McDonnell F2H
F-3 Demon - was McDonnell F3H
F-4 Phantom II - was McDonnell-Douglas F4H
F-5 Freedom Fighter - Northrop
F-6 Skyray - Douglas, was F4D
F-7 Sea Dart - was Convair F2Y
F-8 Crusader - was Vought F8U
F-9 Cougar - was Grumman F9F
F-10 Skyknight - was Douglas F3D
F-11 Tiger - was Grumman F11F
YF-12 - Lockheed
F-13 never assigned
F-14 Tomcat - Grumman
F-15 Eagle - McDonnell-Douglas
F-16 Fighting Falcon - General Dynamics
YF-17 Cobra - Northrop
F/A-18 Hornet - McDonnell-Douglas
F-19 - either unused or still classified; possibly the F-117
F-20 Tigershark (F-5 variant) - Northrop
F-21 Kfir - Israel Aircraft Industries
F/A-22 Raptor - Lockheed Martin
YF-23 Black Widow II - Northrop/McDonnell Douglas
F-35 Joint Strike Fighter - Lockheed Martin

Tanker

KA-2 Savage - North American
KA-3 Skywarrior - Douglas
KA-6 Intruder - Grumman
KB-29 Superfortress - Boeing
KB-47 Stratojet - Boeing
KB-50 Superfortress - Boeing
KC-10 Extender - McDonnell-Douglas
KC-97 Stratotanker - Boeing
KC-124 Globemaster II - Douglas
KC-130 Hercules - Lockheed
KC-135 Stratotanker - Boeing

Observation

O-1 - Curtiss Falcon
O-2 - Douglas
O-31/O-43/O-46 - Douglas
O-47 - North American
OS2U Kingfisher - Vought
OH-6A Cayuse

OH-55 Kiowa - Bell
OV-1 Mohawk - Grumman
OV-10 Bronco - North American
SOC Seagull - Curtiss
SO3C - Curtiss

O-1 Bird Dog - Cessna
O-2 Skymaster

Orbiter Vehicle

OV-x space shuttle

Patrol

Multimission Maritime Aircraft - Boeing (no designation at this time)
P2V Neptune - Lockheed
P2Y - Consolidated
P5Y - Consolidated
P-3 Orion - Lockheed
P4M Mercator - Martin
P5M Marlin - Martin
P6M SeaMaster - Martin (actually more a strategic bomber)
PBM Mariner - Martin
PBY Catalina - Consolidated
PB2Y Coronado - Consolidated
PV-1 Ventura - Lockheed
PV-2 Ventura - Lockheed, Ventura variant

Pursuit

Pursuit Aircraft of the US Army Air Service/Corps/Force, 1918-1948. After formation of US Air Force (USAF), all "P" designations were changed to "F" while retaining number. Initially, "PW" was used to indicate "Pursuit, Water-cooled engine".

PW-8 - Curtiss
PW-9 - Boeing, FB in navy
P-1 Hawk - Curtiss, derived from PW-8; US Navy designation was F6C
P-2 Hawk - Curtiss
P-3 Hawk - Curtiss
P-4 - Boeing
P-5 Superhawk - Curtiss
P-6 Hawk - Curtiss, derived from P-1
XP-7 - Boeing
XP-8 - Boeing
XP-9 - Boeing
XP-10 - Curtiss
P-11 Hawk - Curtiss
P-12 - Boeing, F4B in Navy
XP-13
XP-14 - Curtiss
XP-15 - Boeing
P-16 - Berliner-Joyce, F2J to Navy
XP-17 - Curtiss
XP-18 - Curtiss
XP-19 - Curtiss
YP-20 - Curtiss, derived from P-6
XP-21 - Curtiss
XP-22 - derived from P-6
XP-23 - Curtiss
YP-24 - Lockheed
Y1P-25 - Consolidated
P-26 - Boeing "Peashooter" monoplane
XP-27 - Consolidated
XP-28 - Consolidated
F7B - Boeing, modified F7B
P-30 - Consolidated, aka PB-2A
XP-31 - Curtiss
XP-32 - Boeing
XP-33 - Consolidated
XP-34 - Wedell-Williams
P-35 - Seversky
P-36 - Curtiss Model 75A, radial engine
YP-37 - Curtiss Model 75I, in-line engine
P-38 Lightning - Lockheed, twin-engine twin-boom
P-39 Airacobra - Bell, engine mounted behind pilot
P-40 - Curtiss, Tomahawk (P-40A to P-40C), Kittyhawk (P-40D to P-40M), Warhawk (P-40N to P-40Q)
XP-41 - Seversky, derived from Seversky P-35
XP-42 - Curtiss P-36 with experimental engine cowlings
P-43 Lancer - Republic, derived from XP-41
P-44 Rocket - cancelled
P-45 designation changed to P-39C
XP-46 - Curtiss
P-47 Thunderbolt - Republic
XP-48 - Douglas
XP-49 - Lockheed, derived from P-38
XP-50 - Grumman, derived from US Navy XF5F
P-51 Mustang - North American, originally for export to Britain
XP-52 - Bell, twin-boom pusher configuration, never built
XP-53 - Curtiss P-40 with laminar-flow wing, cancelled during construction
XP-54 - Vultee, twin-boom pusher configuration
XP-55 Ascender - Curtiss, flying-wing configuration with pusher engine
XP-56 - Northrop, tail-less with pusher engine, magnesium construction
XP-57 - Tucker, cancelled before construction
XP-58 - Lockheed, another twin-engine, twin-boom
P-59 Airacomet - Bell, 1st American aircraft powered by jet engine
YP-60 - Curtiss
P-61 Black Widow - Northrop
XP-62 - Curtiss
P-63 Kingcobra - Bell, engine again mounted behind pilot
P-64 - North American, intended for export, but used by USAAF as fighter trainer
XP-65 - Grumman, derived from XP-50
P-66 Vanguard - Vultee, intended for export, but used by USAAF as fighter trainer
XP-67 - McDonnell
XP-68 - Vultee
XP-69 - Republic
P-70 Havoc - Douglas, "Havoc" night-fighter derived from A-20
XP-71 - Curtiss
XP-72 - Republic
XP-73 - mysterious Hughes project
P-74 skipped
P-75 Eagle - Fisher division of General Motors
XP-76 - Bell
XP-77 - Bell, lightweight fighter of wooden construction
XP-78 - North American, changed to XP-51B during construction
XP-79 , Northrop
P-80/F-80 Shooting Star - Lockheed, turbo-jet engine
Convair XP-81 - Convair, turbo-prop + turbo-jet engines
P-82/F-82 Twin Mustang - North American
XP-83 - Bell, two jet engines

Drone

QF-102 Firebee

Reconnaissance

RA-2 Savage
RA-3 Skywarrior
RA-5 Vigilante - North American
RB-17 Flying Fortress
RB-26 Invader
RB-29 Superfortress
RB-36 Peacemaker
RB-45 Tornado
RB-47 Stratojet
RB-52 Stratofortress
RB-57 Canberra
RB-58 Hustler
RB-66 Destroyer
RB-69 Neptune
RC-7 Caribou
RC-12 Guard Rail - Beech Aircraft
RC-45 Expeditor
RC-47 Skytrain
RC-54 Skymaster
RC-121 Warning Star
RC-130 Hercules
RC-131 Samaritan
RC-135 Rivet Joint - Boeing
RF-4 Phantom II - McDonnell-Douglas
RF-5 Tigereye
RF-8 Crusader - Chance Vought
RF-9 Cougar
RF-51 Mustang
RF-61 Reporter
RF-80 Shooting Star
RF-84 Thunderflash
RF-86 Sabre
RF-87 Blackhawk
RF-100 Super Sabre
RF-101 Voodoo
RF-104 Starfighter
RF-105 Thunderchief
SR-71 Blackbird - Lockheed
U-2 - Lockheed

Trainer

AT-9 "Jeep" - Curtiss-Wright
AT-21 Gunner - Fairchild
BT-13 Valiant - Vultee
Curtiss Jenny - Curtiss
PT-11 - Consolidated
PT-13 and PT-17 Kaydet - Boeing Stearman
PT-19 - Fairchild
PT-22 Recruit - Ryan
PT-24 Moth - De Havilland
SNC Falcon - Curtiss-Wright
T-2 Buckeye - North American
T-6 Texan - North American
T-28 Trojan - North American
T-29 - Convair 240
T-33 - Lockheed nicknamed "Teebird"
T-37 - Cessna "Tweetybird"
T-38 Talon - Northrop
T-39 Sabreliner - North American
T-43 - Boeing 737-based navigation trainer
T-45 Goshawk - (Hawk) British Aerospace
U-21A Ute - Beechcraft/Raytheon

Utility

JF/J2F Duck - Grumman
G-21 Goose - Grumman
G-44 Widgeon - Grumman
HU-16 Albatross - Grumman
UH-1 Iroquois - Bell "Huey"
H-3 Sea King - Sikorsky
U-3 Blue Canoe - Cessna 310
U-8 Seminole - Beechcraft Travel Air
UH-60 Blackhawk - Sikorsky
HH-60 Pave Hawk - Sikorsky

Vertical Take off and Landing

V-22 Osprey - Bell, Boeing Vertol, tilt rotor aircraft

Experimental

Main article: X-plane

X-1 - Bell, first supersonic aircraft
X-2 - Bell
X-3 Stiletto - Douglas
X-4 Bantam - Northrop
X-5 - Bell swing-wing
X-6 - Convair
X-7 - Lockheed missile propulsion testbed
X-8 - Aerojet General missile
X-9 Shrike - Bell missile
X-10 - North American missile
X-11 - Convair ICBM prototype
X-12 - Convair ICBM
X-13 - Ryan VATOL
X-14 - Bell VTOL
X-15 - North American rocket plane
X-16 - Bell, cancelled U-2 competitor
X-17 - Lockheed experimental rocket
X-18 - Hiller tilt-wing
X-19 - Curtiss-Wright
X-20 Dyna-Soar - Boeing
X-21 - Northrop
X-22 - Bell
X-23 - Martin Marietta
X-24 - Martin Marietta lifting body
X-25 - Bensen
X-26 Frigate - Schweizer
X-27 - Lockheed
X-28 Sea Skimmer - Pereira
X-29 - Grumman forward-swept wing jet
X-30 - Hypersonic jet or "Orient Express"
X-31 - Rockwell/MBB Enhanced Fighter Maneuverability Demonstrator
X-32 - Boeing Joint Strike Fighter candidate
X-33 - Lockheed Martin
X-34 - Orbital Sciences
X-35 - Lockheed Martin Joint Strike Fighter winner
X-36 - McDonnell Douglas
X-37 Future-X - Boeing
X-38 - Scaled Composites crew return vehicle
X-39 - unused designation reserved for Future Aircraft Technology Enhancements program
X-40 - Boeing
X-41 - classified re-entry vehicle
X-42 - classified upper stage rocket
X-43 - Boeing with others, scramjet-powered
X-44 MANTA - Lockheed Martin
X-45 - Boeing UCAV (unpiloted)
X-46 - Boeing
X-47 Pegasus - Northrop Grumman
X-48 - Boeing
X-49 - Sikorsky Piasecki
X-50 - Boeing

All Science Fair Projects