There are a lot of gaps... but any additions are most welcome!
nd DOODLEBUG low-wing tandem-seat sportsplane
1 proposal for XP-55 competition with Allison V-3420-B2 (Specification R-40C) (early 1940)
1 same project with Pratt & Whitney H-3130 engine (June 40)
2 MANTA fighter proposal for USAAF (two different configurations)
2a USAAF XP-67 MOONBAT MX-127 fighter with XIV-1430-17/19 engines (pj-22 May 1941)(Prelim. Spec. S-23A)
? USAAF AT-15 CREWMAKER projected production version of Boeing AT-15, canceled
? USAAF AT-21 GUNNER production batch of Fairchild AT-21
? US Navy KDD-1 KATYDID target drone
? US Navy KSD-1 GARGOYLE target drone
? US Navy XFD-1 PHANTOM experimental jet fighter
? US Navy FH-1 PHANTOM production version of XFD-1 (1945)
? US Navy XF2D-1 BANSHEE
? US Navy F2H-1 BANSHEE
? US Navy F2H-2 BANSHEE
? US Navy F2H-2B BANSHEE
? US Navy F2H-2N BANSHEE
? US Navy F2H-2P BANSHEE
? F2H-3 BANSHEE (US Navy / RCAF)
? F2H-4 BANSHEE (US Navy / RCAF)
27 series of projects leading up to the XF-85 (up to 27D)
27E USAF XF-85 GOBLIN MX-472 parasite fighter
36 USAF XF-88 VOODOO experimental jet fighter
36W USAF F-101A/C VOODOO
36X USAF RF-101A/C VOODOO
36AT USAF F-101B VOODOO
37 US Navy XHJD-1 WHIRLAWAY experimental helicopter with two rotors on beams
J-38 US Army XH-20 LITTLE HENRY experimental helicopter
40/A US Navy Carrier Based Day Fighter, 1945 proposal (1946 requirement, winner was F7U)
58 US Navy XF3D-1 DEMON Carrier-Based Interceptor requirement from 1948
58 US Navy F3H* DEMON *many versions which will be treated in separate listing
XF3H-1 (ff-7 Aug 51)
60 Delta wing alternative to the Model 58, alternate proposal for F3D competition
61 Airliner/transport project
65C WHIRLAWAY projected civil production version of Model 37
67 no details; perhaps related to the DEMON?
68 no details; perhaps related to the DEMON?
78 USMC XHRH-1 assault helicopter, canceled (1951)
79 BIG HENRY prototype
? US Army XH-29 projected two-seater version of Model 38
82 US Army XH-35/XV-1 CONVERTIPLANE experimental tilt-rotor transport, redesignated XL-25
86 US Navy XHCH-1 flying crane helicopter, canceled
90 US Navy OS-130 requirement (F8U) fighter proposal (DEMON fuselage /straight F-104-type wing)
91 US Navy OS-130 requirement (F8U) fighter proposal
93 US Navy OS-130 requirement (F8U) fighter proposal
96 USAF disposable weapons/fuel pod developed for the F-101A Voodoo
98* US Navy XF4H-1/F-4* PHANTOM II heavy fighter (1958); *many versions which will be treated in separate listing
98* USAF F-110 SPECTRE / F-4PHANTOM II *many versions which will be treated in separate listing
99 USAF CONVERTIPLANE Air Force development of Model 78, forerunner of Model 113
113 large military transport convertiplane project, includes Design 113P
119 McDONNELL 220 business plane with four jets
120 "V-1 JEEP" FLYING CRANE with two Solar T-62 Titan engines and XV-1 rotor (evaluated by US Army)
122B USAF two-stage hypersonic vehicle (WS-199D)
133K NASA MERCURY space capsule
156 US Navy TFX competitor of General Dynamics F-111 and Boeing 818
158 US Army LOH submission
176 USAF FDL-7 lifting body study
188 McDONNELL 188 French Breguet 941 as US demonstrator
188E McDONNELL 188 French Breguet 941S as US demonstrator
192 USAF ISINGLASS boost glide reconnaissance vehicle
193 no details
210 evolutionary development of the Breguet 941
210E STOL developed parallel with Breguet's development of their Model 942 proposal
210G variant of the above
220 civil commercial designation of Model 119 (*model number out of sequence)
225 US Navy variable sweep fighter proposal
226 no details
MISSILES
? QUAIL GAM-72 / ADM-20A/-20C decoy drone
? SPARTAN LIM-49A anti-ballistic long-range interceptor missile
? US Army DRAGON M47 / FGM-77A anti-tank missile
? HARPOON UGM-84/A/C/D
? HARPOON RGM-84
? HARPOON AGM-84A/C anti-ship missile / AGM-84E
? HARPOON AQM-84/ RQM-84
? GEMINI space capsule
? ATDA rocket
? ATLAS ATDA rocket
Current McDonnell Douglas designations took up where McDonnell left off:
258-2 US Navy (SCS) ADVANCED HARRIER new thin high-speed wing, slimmer fuselage, new intake, Pegasus 15-03 engine
260 US Navy… series of multimission VTOL designs
262 no details
267 US Navy F/A-18 HORNET naval fighter
268 DARPA low signature fighter designed to a DARPA contract in 1975
276 version of Model 260
279 V/STOL fighter proposal
287 287-1006: pre-ATF project
375 planned production version of X-32