MX-1 to MX-499 Listing
Copyright © 2004-2005 George Cully &Andreas Parsch
[MX-1 ... MX-499][MX-500 ... MX-999][MX-1000 ... MX-1499][MX-1500 ... MX-1999][MX-2000 ... MX-2276]
| Designation | Contractor | Description |
|---|---|---|
| MX-1 | - | Military Characteristics of Tactical Bombs |
| MX-2 | Lockheed | Twin-engined fighter (XP-58) |
| MX-3 | Bell | Single-engine interceptor (XP-52) |
| MX-4 | Curtiss | Single-engine interceptor (XP-53) |
| MX-5 | Republic | Full-scale model of XP-47 |
| MX-6 | Lockheed | Single-seat twin-engined fighter (XP-38ALightning) |
| MX-7 | - | Design study for dive bombers |
| MX-8 | - | Confidential equipment destroyer |
| MX-9 | - | Radio control equipment for targets |
| MX-10 | - | Line of position computer (Type A-4) |
| MX-11 | - | Flight & power computer for B-17 and B-18A airplanes |
| MX-12 | Vultee | Single-engine interceptor (XP-54Swoose Goose) |
| MX-13 | Curtiss | Single-engine interceptor (XP-55Ascender) |
| MX-14 | Northrop | Single-engine interceptor (XP-56Bullet) |
| MX-15 | - | Optical gun sight |
| MX-16 | McDonnell | Interceptor (McDonnell Model 2) |
| MX-17 | Boeing | Heavy bomber (XB-29,YB-29Superfortress) |
| MX-18 | Lockheed | Heavy bomber (XB-30) |
| MX-19 | Platt LePage | Rotary wing aircraft (XR-1) |
| MX-20 | Tucker | Single-engine interceptor (XP-57) |
| MX-21 | Consolidated | Heavy bomber (XB-32) |
| MX-22 | - | Double periscopic sight |
| MX-23 | Librascope | Compensating gun sight |
| MX-24 | - | Bombsight development study (Type S-1) |
| MX-25 | - | Aerial defense balloons |
| MX-26 | Sperry | Central station fire control |
| MX-27 | - | Fire control station for B-35 |
| MX-28 | - | Fire control in A-20A & P-70 |
| MX-29 | Bendix | Simplified central station fire control |
| MX-30 | General Electric | Simplified central station fire control |
| MX-31 | Sperry | Simplified central station fire control |
| MX-32 | - | Periscopic sight (Bausch & Lomb type) for A-20A |
| MX-33 | - | Optical sight (Bureau of Standards type) |
| MX-34 | Martin | Medium bomber (XB-33) |
| MX-35 | - | Aerial gunnery training equipment |
| MX-36 | Vought-Sikorsky | Helicopter (XR-4) |
| MX-37 | - | Method and means of attacking aircraft in flight |
| MX-38 | Kendall Clark | Flexible gun sight |
| MX-39 | Link | Bombing and navigation trainer |
| MX-40 | - | Power turrets |
| MX-41 | - | Airplane siren development |
| MX-42 | - | Release of bombs from bombardment airplanes by remote means (Short Title: R.B.R.) |
| MX-43 | Curtiss | Convoy escort fighter |
| MX-44 | - | Fundamental and basic research by National Academy of Sciences |
| MX-45 | Bell | Interceptor (XP-59) |
| MX-46 | Menasco | Piston engine (XV-2020-1) |
| MX-47 | - | Pilot - rear gunner bombsight |
| MX-48 | - | Electric spark flash unit |
| MX-49 | Eastman | Color development processes |
| MX-50 | - | High speed camera shutter |
| MX-51 | - | Remote control camera leveling |
| MX-52 | - | Pressure cabin camera mounts |
| MX-53 | - | Power-driven controllable bomb (related toXBQ-1,XBQ-2A,XBQ-3,XBQ-5,XBQ-6) -MX-53-A: FairchildXBQ-3 |
| MX-54 | - | Design studies of pursuit-type airplane suitable for night operation |
| MX-55 | - | Reflector-type flexible machine gun sight |
| MX-56 | Stearman | Crew training airplane |
| MX-57 | General Electric | "Amplidyne" turret control system |
| MX-58 | Pioneer | Machine gun sight |
| MX-59 | Westinghouse | Remote gun control fire director system |
| MX-60 | - | Tail gun location indicating device |
| MX-61 | - | Flexible tail gun sight |
| MX-62 | - | Six component balances for 20-foot wind tunnel |
| MX-63 | - | Mirror-type aerial camera |
| MX-64 | C. L. Norden | Universal pilot |
| MX-65 | - | Air-cooled engine installation project |
| MX-66 | - | Lamp assembly for inter-aircraft illumination |
| MX-67 | Fleetwings | Booster power device |
| MX-68 | - | Installation of airborne radar equipment in B-18A |
| MX-69 | Curtiss | Single-engine interceptor (XP-60) |
| MX-70 | General Electric | Modified Type N-2A gun sight assembly (iris-type range finding attachment) |
| MX-71 | General Electric | Remote indicating target device |
| MX-72 | General Electric | Remotely controlled tail gun mount |
| MX-73 | Douglas | Bombers (XA-26,XA-26B) -MX-73-A:XA-26 |
| MX-74 | Boulton-Paul & Frazer-Nash | Turrets |
| MX-75 | - | Cabin supercharger |
| MX-76 | - | Handbook: Armament Equipment Employed in Army Air Forces Tactical-Type Airplanes |
| MX-77 | - | 20mm cannon installation in P-40 wings |
| MX-78 | - | Ramming or collision-type airplane |
| MX-79 | Culver | Aerial targets (A-8 /PQ-8) |
| MX-80 | Napier | Piston engine (Model "Sabre"); see alsoMX-102 |
| MX-81 | - | Development study: Mount, glide angle attachment for "M"-series bombsight |
| MX-82 | - | Reconnaissance and observation flares |
| MX-83 | Librascope | Automatic rangefinder |
| MX-84 | - | 37mm M1E1 cannon installation in A-18 |
| MX-85 | - | Torpedo-carrying airplane |
| MX-86 | - | Continuous strip camera (models TR-9 and S2) |
| MX-87 | - | Comparative data on U.S. and German bombsights |
| MX-88 | Curtiss | Single-engine interceptor (XP-62) |
| MX-89 | - | Parachute bomb |
| MX-90 | Bell | Single-engine interceptor (XP-63,XP-63A) |
| MX-91 | - | Aircraft radio range finder (A.R.R.F.) |
| MX-92 | General Electric | Compensating gun sight |
| MX-93 | - | Photo-reconnaissance airplane study |
| MX-94 | - | Preliminary design studies book |
| MX-95 | - | B-26 remote fire control system |
| MX-96 | - | Firing against armor plate through airplane skin surfaces |
| MX-97 | - | Single-engine (various engine and armament arrangements) interceptor study |
| MX-98 | - | Smoke-generating target signal equipment (exhaust stack-type) |
| MX-99 | - | Strain indicating & recording equipment |
| MX-100 | - | 20mm cannon turrets |
| MX-101 | - | Aircraft armament subjected to warfare use |
| MX-102 | - | Installation studies of Napier "Sabre" piston engine; see alsoMX-80 |
| MX-103 | Chrysler | Piston engine (XIV-2220-1,-3 and-5); see alsoMX-125 |
| MX-104 | - | Military characteristics and installation studies for 4,000 lb. bomb |
| MX-105 | - | Comparative tests of 20mm cannons |
| MX-106 | - | Ballistic data for forward-firing aircraft guns |
| MX-107 | - | Igniter delay (Type M-1) |
| MX-108 | ATSC | Controllable glide bomb (GB-4); continued byMX-618 |
| MX-109 | - | Target seeker device |
| MX-110 | Menasco | Piston engine (XH-4070-1) |
| MX-111 | - | Powered wind tunnel model (Materiel Div. Design No. 366) |
| MX-112 | - | Stainless steel wing panels and tail surfaces for XB-29 |
| MX-113 | Fairchild | Bombing crew training airplane (XAT-13) |
| MX-114 | - | Troop gliders |
| MX-115 | - | Preliminary design of a medium bomber |
| MX-116 | - | Laminar flow airfoil data |
| MX-117 | B.F. Goodrich | Pressure suits for high-altitude flying |
| MX-118 | - | Physiological tests in connection with failure of pressurized airplanes |
| MX-119 | - | Small caliber gun ballistic data |
| MX-120 | - | Armor protection for tactical airplanes |
| MX-121 | JPL | JATO devices for AMC Aircraft Laboratory |
| MX-122 | Fairchild | Bombing crew training airplane (XAT-14) |
| MX-123 | Stearman | Bombing crew training airplane (XAT-15) |
| MX-124 | - | Ultra-violet night landing system |
| MX-125 | - | Installation studies of Chrysler V-2220 & XIV-2220-1 engines; see alsoMX-103 |
| MX-126 | - | Agfacolor color film |
| MX-127 | McDonnell | Twin-engined interceptor (XP-67Bat) |
| MX-128 | - | Study: Installation of dive brakes on A-20A |
| MX-129 | United Shoe Machinery | Gun drive system |
| MX-130 | - | Protection of aircraft equipment against sand |
| MX-131 | - | Test of British-built airplanes |
| MX-132 | - | Tank-carrying airplane |
| MX-133 | - | Troop-carrying provisions for bomber-type airplanes |
| MX-134 | Douglas | Heavy bomber (6,000 mile range) design study |
| MX-135 | - | Standardization of gunnery trail |
| MX-136 | Brewster | Light bomber (XA-32,XA-32A) |
| MX-137 | - | Long-range four-engined bomber |
| MX-138 | Grumman | Twin-engined interceptor (XP-65) |
| MX-139 | - | Dive bomber design study |
| MX-140 | Northrop | Long-range heavy bomber (XB-35) |
| MX-141 | Acrotorque | Hydraulic transmissions |
| MX-142 | - | Development of plywood pursuit airplanes |
| MX-143 | Librascope | Dropping angle computer |
| MX-144 | - | Night-Time fluorescent lighting |
| MX-145 | - | Caliber .50 incendiary ammunition |
| MX-146 | Republic | Single-engine interceptor (XP-47E) |
| MX-147 | Curtiss-Wright | 75mm cannon-carrying multi-place fighter (XP-71); see alsoMX-391 |
| MX-148 | - | Night gun sight ("Night Glass") |
| MX-149 | Consolidated | Long-range heavy bomber (XB-36) |
| MX-150 | Curtiss-Wright | Development of full-scale flying model (CW Model 24-B (XP-55 Proof-of-Concept airplane)) |
| MX-151 | - | Glider tanker feasibility study; see alsoMX-416 andMX-571 |
| MX-152 | - | Flutter research with other than government agencies |
| MX-153 | Wright | Piston engine (XR-4090) |
| MX-154 | Douglas | Heavy bomber (10,000 mile range) design study |
| MX-155 | - | Automatic defensive equipment (A.D.E.) for bombers |
| MX-156 | Kellett | Observation aircraft (XO-60) |
| MX-157 | Pitcairn-Larsen | Observation aircraft (XO-61) |
| MX-158 | Waco | Transport aircraft (YC-62) |
| MX-159 | - | Long-range bomber design study |
| (MX-160) | (No information; listed as "cancelled") | |
| (MX-161) | (No information) | |
| MX-162 | Republic | Interceptor (XP-69) |
| MX-163 | - | Bomber-borne pursuit airplane |
| MX-164 | Pratt & Whitney | Piston engine (R-4360 X-Wasp) |
| MX-165 | - | Torpedo training cameras |
| MX-166 | - | Development of bomb glider |
| MX-167 | Platt-LePage | Rotary wing aircraft (XR-1A) |
| MX-168 | Packard | Piston engine (V-1650-3; Packard-built Rolls-RoyceMerlin); see alsoMX-252 |
| MX-169 | Minneapolis-Honeywell | Control system development study |
| MX-170 | - | Study of cargo type airplane |
| MX-171 | - | Incendiary systems |
| MX-172 | Allison | Turbojet engine (J31) |
| MX-173 | - | Installation study of aircraft depth bomb Mark XXIX |
| MX-174 | - | Installation studies of Fairey P-24 engine |
| MX-175 | - | U.S.M.C. single and double 37mm tail gun mount |
| MX-176 | - | Preliminary work in various pursuit designs MX-176 included a proposal that Hughes Aircraft should build a P-51 look-alikeaircraft from duramold and fit it with an Allison V-1710 engine. P-51 design data was sent from North American to Hughes,but it is unknown how much work was actually done. |
| MX-177 | - | Development study: British sight T-1 (Mark XIV) |
| MX-178 | - | Aircraft gun laying equipment (AGL-1) |
| MX-179 | United Shoe Machinery | 37mm cannon pressurized turret |
| MX-180 | - | Glide, climb and night bombsight |
| MX-181 | United Shoe Machinery | Caliber .50 four-gun tail gun mount |
| MX-182 | W.L. Maxson | Torpedo sight and director |
| MX-183 | - | Radio-controlled bombardment airplane |
| MX-184 | - | Searchlights for night fighters |
| MX-185 | - | Equipment for training Argentine officers |
| MX-186 | United Shoe Machinery | Caliber .50 twin-gun tail gun mount for B-26B |
| MX-187 | - | Study of maximum ferry range of service bombers |
| MX-188 | - | Evaluation information on Axis airplanes |
| MX-189 | Republic | Single-engine fighter (XP-72) |
| MX-190 | - | Evaluation of information on Allied airplanes |
| MX-191 | - | Installation study of Navy Mk XIII magnetic mine |
| MX-192 | - | Studies to improve performance and tactical utility of service aircraft |
| MX-193 | - | Wing flap and glove test |
| MX-194 | - | Study and tests of 37mm, Type M1A2 cannon in aircraft |
| MX-195 | - | Study of bomb bays |
| MX-196 | - | Stainless structural steel |
| MX-197 | - | Radio-controlled bomb glider |
| MX-198 | - | A1-3 equipment |
| MX-199 | - | Investigation of air brakes and maneuver flaps for use in combat |
| MX-200 | - | Pursuit towed by bomber |
| MX-201 | - | Study to increase range of B-17E and B-24D by aerial refueling |
| MX-202 | - | Non-explosive photoflash illuminants |
| MX-203 | Boeing (Vega) | Bomber escort airplane (YB-40) |
| MX-204 | - | In-flight refueling trials with B-24 |
| MX-205 | - | Transport gliders |
| MX-206 | Douglas | Preliminary study of combat transport airplane (XC-74) |
| MX-207 | - | Boundary layer control flight data |
| MX-208 | Polaroid | Bombing system |
| MX-209 | - | Study of pressurized oxygen systems |
| MX-210 | - | Test on calibers .30 and .50 incendiary ammunition in synchronized guns |
| MX-211 | Lycoming | Piston engine (XH-2470) |
| MX-212 | Fairchild | Combat transport airplane (XC-82) |
| MX-213 | - | Parachute bomb cluster adapter |
| MX-214 | - | Development of synthetic night flying training equipment |
| MX-215 | - | Analytical studies of V-3420 engine mount vibration characteristics |
| MX-216 | - | Navy Mark XXVIII torpedo director |
| MX-217 | - | Development studies of dive bombing aircraft |
| MX-218 | Douglas | Torpedo director (Model RCL) |
| (MX-219) | (No information; listed as "cancelled") | |
| MX-220 | - | Wing taper investigation for Boeing long-range bomber -MX-220-A: Actual tests using PT-19A (41-20531) and test parts |
| MX-221 | - | Extended weather forecasting |
| MX-222 | - | Fuel injection in Pratt & Whitney R-2800-45 engine |
| MX-223 | - | High intensity radio-operated recognition lights (Short title: R.L.H.I.) |
| MX-224 | - | Radio-controlled glide bomb (GB-2) |
| MX-225 | - | Controllable bomb, azimuth-only (VB-1Azon) |
| MX-226 | - | Glide torpedo |
| MX-227 | - | Fuel injection in Wright R-3350-19 engine |
| MX-228 | - | Fuel Injection in Allison V-1710-69 & -71 engines |
| MX-229 | Fairey | Engine (Model P-24) |
| MX-230 | Boeing (Fisher Body) | Heavy bomber (XB-39) |
| MX-231 | - | Development of bomb dropping angle computers |
| MX-232 | Studebaker | 5000 hp piston engine (XH-9350?) |
| MX-233 | - | Passive defense measures for personnel and vital installations in aircraft |
| MX-234 | Boeing (Vega) | Heavy bomber (XB-38) |
| MX-235 | - | Development of fire control for 75mm aircraft cannon |
| MX-236 | - | Retractable turret for housing "Project 77" (HSX?) equipment |
| MX-237 | - | Haze paint method of camouflage |
| MX-238 | Douglas | Cargo airplane (XC-53A) |
| MX-239 | - | Miles-per-gallon indicator |
| MX-240 | Aerotorque | Propellor hub |
| MX-241 | - | Installation of rocket gun |
| MX-242 | - | Torpedo trainer |
| MX-243 | - | Cycleweld process |
| MX-244 | United Shoe Manufacturing | Automatic ranging device |
| MX-245 | United Aircraft (Sikorsky Div.) | Helicopters (XR-4A,YR-4A andXR-6) |
| MX-246 | - | Alkan dive bombsight |
| MX-247 | - | Control cable vulnerability |
| MX-248 | - | Ready destruction of combat airplanes |
| MX-249 | - | Modification of service airplanes to carry pursuit airplanes internally |
| MX-250 | - | Special weapons gyroscopes |
| MX-251 | - | Low-altitude electric flash photography |
| MX-252 | - | Installation studies of Rolls-RoyceMerlin engine (Packard V-1650-3) in service airplanes; see alsoMX-168 |
| MX-253 | - | Comparative pursuit airplane firing tests |
| MX-254 | - | Study of British target control equipment (included adaptation of British pneumatic remote control to an AT-6) |
| MX-255 | - | Modification of B-24C for anti-submarine activity |
| MX-256 | United Aircraft (Vought-Sikorsky Div.) | Helicopter (XR-5) |
| MX-257 | - | Installation of special equipment (ASW?) in B-18A |
| MX-258 | - | I.B.E. (Bombing equipment on Civil Air Patrol airplane) |
| MX-259 | - | Bomb racks on observation airplanes |
| MX-260 | Republic | Single-engine fighter (XP-47H) |
| MX-261 | - | Study of night fighter designs |
| MX-262 | - | Flight data recorder |
| MX-263 | - | Investigation of compressibility effect on XB-29 |
| MX-264 | - | Conflicting information: - Target airplane (PQ-14); Culver - Assault drone (XBQ-4); Interstate Note: XBQ-4 reference may be in error, because other BQ bombs (BQ-1, -2, -3, -5, -6) come underMX-53 |
| MX-265 | - | Comparative investigation of handling of various types of British and U.S. bombs |
| MX-266 | - | Increasing frontal defensive fire in B-25 & B-26 |
| MX-267 | - | Armament modification on B-26 |
| MX-268 | - | Armament modification on B-17E (CTI-67I) |
| MX-269 | - | AM CTI-642 (modification of 35 B-17E airplanes) |
| MX-270 | - | ARO (Light-weight aircraft radio range finder); see alsoMX-513 |
| MX-271 | - | Anti-icing system forXB-26D |
| MX-272 | Bell | Lightweight interceptor fighter (XP-77) |
| MX-273 | - | Remote torpedo depth control |
| MX-274 | - | Development work on superior aircraft engine fuel (Coordinating Research Council) |
| MX-275 | - | Bombing balloons |
| MX-276 | - | Anti-icing system forXC-60B |
| MX-277 | - | Power-driven bomb |
| MX-278 | North American | Fighter interceptor (XP-78 /XP-51B) |
| MX-279 | Boeing | Cargo transport airplane (XC-97) |
| MX-280 | Curtiss | Fighter interceptor (XP-60D) |
| MX-281 | - | Fighter bombing calculator |
| MX-282 | - | Conversion of service gas masks to oxygen masks |
| MX-283 | - | Seismograph bomb scoring apparatus |
| MX-284 | Hamilton Standard | Governor controls for two-speed engines |
| MX-285 | - | Glider development |
| MX-286 | - | Low-pressure plastic development |
| MX-287 | - | Modification of Army Air Forces turrets |
| MX-288 | - | Horizontal flight and glide bombsights incorporating the Victor Principle |
| MX-289 | - | Incendiary grenade AN-M14 in combat aircraft, including transports |
| MX-290 | - | Sighting equipment for 75mm cannons in A-26 |
| MX-291 | - | Low pour point aircraft engine lubricating oils |
| MX-292 | - | Service tests on remote control fuze setter on M-26 bombardment flares |
| (MX-293) | (No information; listed as "cancelled") | |
| MX-294 | - | Bellows flap |
| MX-295 | - | Torpedo-carrying facilities for B-17 and B-24 |
| MX-296 | - | Glider blind tow equipment |
| MX-297 | Beech | Destroyer airplane (XA-38) |
| MX-298 | - | Anti-icing System forXB-25E |
| MX-299 | - | Design study of destroyer type airplane |
| MX-300 | Fleetwings | Support airplane (XA-39) |
| MX-301 | - | 75mm cannon installation in B-25C (XB-25G) |
| MX-302 | - | C.O.T. engine ['G.O.T. - Detail Descriptive Info on the Waukesh Co.'] |
| MX-303 | - | Test of lubricating oils in multi-cylinder engines |
| MX-304 | Consolidated | Cargo-transport airplane (XC-99) |
| MX-305 | Curtiss | Support airplane (XA-40) |
| MX-306 | - | Anti-spin chutes |
| MX-307 | - | Armor plate data of AAF airplanes |
| MX-308 | - | Torpedo director, N.D.R.C. Project No. 33 |
| MX-309 | Douglas (Fisher Body) | Installation of Allison V-3420-11 engines in XB-19 (XB-19A) |
| MX-310 | - | EAGLE (Electronic High Instrument Bombing) (AN/APQ-7); see alsoMX-503 |
| MX-311 | - | Development of small, lightweight aircraft oxygen generators |
| MX-312 | Vultee | Support airplane (XA-41) |
| MX-313 | Curtiss | Fighter interceptor (XP-60C,XP-60E) |
| MX-314 | - | Rotary parachute |
| MX-315 | - | "Kilfrost" (Anti-icing wing paste) |
| MX-316 | - | Photographic recording of airplane flight demonstrations |
| MX-317 | General Motors / Fisher | Fighter interceptor (XP-75) |
| MX-318 | - | Michelson instrument for accurate plotting of aircraft path, bomb hits |
| MX-319 | - | Television bombing trainers |
| MX-320 | Consolidated | Bombardment escort airplane (XB-41) |
| MX-321 | Fairchild | Central station computer |
| MX-322 | - | Development, study & construction of a human centrifuge |
| MX-323 | - | Methods of improving take-off characteristics |
| MX-324 | Northrop | Rocket-propelled flying-wing research aircraft; test vehicle forXP-79; see alsoMX-334 andMX-365 |
| MX-325 | - | Test of 8-place assault gliders |
| MX-326 | Fairchild | 37mm compensating gun sight |
| MX-327 | - | General study on bombardment escort airplane |
| MX-328 | - | VHF (Very High Frequency) IFF (Identification, Friend or Foe) |
| MX-329 | - | Twin 37mm power-driven gun mount for nose of B-24E |
| MX-330 | Victor Adding Machine | Bombsight |
| MX-331 | - | Determination of the biological effects of radar |
| MX-332 | - | Gunfire tests on hydraulic systems |
| MX-333 | Sikorsky | Helicopter (XR-6 andXR-6A) |
| MX-334 | Northrop | Flying-wing glider (unpowered version ofMX-324) |
| MX-335 | - | Flight measurement of compressibility effects |
| MX-336 | - | Auxiliary airfoil on C-70 airplanes |
| MX-337 | - | Flight data records from combat operations |
| MX-338 | - | Arrester gear development |
| MX-339 | Sperry | Locally-controlled gyro stabilized turrets |
| MX-340 | Emerson | Streamline multiple caliber .50 nose and tail turret |
| MX-341 | - | Rotor blade de-icing research |
| MX-342 | - | Propane engine starting information |
| MX-343 | - | Test data relating to ethylene glycol and ethylene glycol/water mixtures |
| MX-344 | - | Study of quick-removable 37mm cannon bath tub in B-25C |
| MX-345 | - | Possibility of reducing safety factors in bomb racks |
| MX-346 | Ranger | Piston engine (XV-770-9) |
| MX-347 | - | Special electrical generating equipment for B-35 and B-36 |
| MX-348 | Kellett | Helicopter (XR-8) |
| MX-349 | - | Helicopter bombsight |
| MX-350 | - | Spray tank E16R1 installation in bombardment airplane |
| MX-351 | Allison | Piston engine (V-1710-97) |
| MX-352 | - | Transvision books: flight gyro, servo units, stabilizers C-1 automatic pilot |
| MX-353 | - | Portable flashing beacon lamp assembly |
| MX-354 | Fairchild | Gyro control compensating gunsight |
| MX-355 | J.H. Keeney | Anti-submarine hand-stabilized bombsight |
| MX-356 | North American | Offensive fighter (XP-51F,XP-51G andXP-51J) |
| MX-357 | - | Study: Installation of N.A.C.A. jet propulsion scheme in aircraft (twin-Jet light bomber utilizing NACA jet) |
| MX-358 | Westinghouse | Fire control system, stabilized sighting station |
| MX-359 | Sperry | Tail gun computing sight (Model K-11) |
| MX-360 | - | 400 cycle 115 Volt AC motor-driven fuel pump |
| MX-361 | - | Research of fluorinated hydrocarbons for cooling liquids |
| MX-362 | - | Aircraft gun sight (A.G.S.) |
| MX-363 | JPL | Air-to-underwater rocket "Hydrobomb" |
| MX-364 | Dow Chemical | Supercharger |
| MX-365 | Northrop | Turbojet- or rocket-powered fighter interceptor (XP-79,XP-79B); see alsoMX-324 andMX-334 |
| MX-366 | - | Test installations of anti-submarine equipment in (one or more) B-24D |
| MX-367 | - | Test of methyl tertiary butyl ether engine fuels |
| MX-368 | - | Remote control flight testing |
| MX-369 | - | Vane type hydraulic motor |
| MX-370 | - | Film speed and aperture control |
| MX-371 | Sperry | Fighter bombsight |
| MX-372 | - | Armament temperature operating range |
| MX-373 | Consolidated | Photographic airplane (XF-7) |
| MX-374 | NBS | Gun sight and range finding equipment data |
| MX-375 | - | Sintered metal leading edge for the prevention of icing |
| MX-376 | Sperry | Remote fire control system testing equipment |
| MX-377 | - | Flight approach for torpedo release trainer |
| MX-378 | Radioplanes | Non-man carrying radio airplane targets (OQ-3 andOQ-6) and catapults |
| MX-379 | - | Installation of M-10 chemical tanks in A-36 |
| MX-380 | - | M-10 chemical tank on B-25 Wing |
| MX-381 | - | Self-sealing pressurized turret dome tests |
| MX-382 | - | 37mm Type M-9 cannon installation in A-20G |
| MX-383 | - | M4E3, 37mm cannon tests, utilizing links |
| MX-384 | - | Basic bomb and aircraft flight characteristic data |
| MX-385 | - | Tactics, technique and installation for plane to plane bombing |
| MX-386 | Frigidaire | Study of mechanism for ballistic corrections for precision bombsights |
| MX-387 | - | Detection and identification of aircraft by invisible radiations - IRAD (Infra-Red Telescope) |
| MX-388 | - | Lower reflection coatings for glass and plastics |
| MX-389 | - | Anti-G devices type evaluation |
| MX-390 | - | Reflex sight for flexible guns |
| MX-391 | L.A.B. Corp. | Fire control system for XP-71; see alsoMX-147 |
| MX-392 | Douglas | Light bomber (XB-42); see alsoMX-880 |
| MX-393 | - | Intermittent positive pressure resuscitation and breathing |
| MX-394 | - | Anti-submarine bombing trainer |
| MX-395 | - | Colored smoke grenades (M16) |
| MX-396 | - | Light cargo carrier (T-24) project (a.k.a. "Plough Project") |
| MX-397 | Bell | Twin-jet interceptor fighter (XP-59A,YP-59AAiracomet) |
| MX-398 | Bell | Single-jet interceptor fighter (XP-59B) |
| MX-399 | - | P-47 dive pull-out flaps (tests on a P-47C-1) |
| MX-400 | - | High-altitude generator - brush wear |
| MX-401 | - | Land- and water-borne targets for high-altitude bombing and flexible gunnery practice |
| MX-402 | - | Gun, bomb and rocket sight |
| MX-403 | - | Impact bomb sight |
| MX-404 | - | Study of a new high strength aluminum alloy sheet ("Reymetal") |
| MX-405 | - | Transmission of control information of altimeters to automatic flight control equipment |
| MX-406 | - | A-10 pilot and M-Series and S-1 bombsight interconnections |
| MX-407 | - | 75mm cannon and accessories Tests (retesting 75mm cannon in a B-25) |
| MX-408 | - | Three-engine take-off performance (for performance chart preparation) |
| MX-409 | Lockheed | Jet-powered interceptor fighter (XP-80Shooting Star) -MX-409-A:XP-80A -MX-409-B:YP-80A |
| MX-410 | Allison | Piston engines (V-1710-103) |
| MX-411 | Lockheed | Turbojet engine (XJ37) |
| MX-412 | - | Oxygen adsorbents |
| MX-413 | - | Stability and control requirements for army airplanes |
| MX-414 | General Electric | Turbojet engine (J35) |
| MX-415 | General Electric / Allison | Turbojet engines (XJ33-A-25,-27,-29) |
| MX-416 | Cornelius | Tailless fuel tank glider with forward-swept wings (XFG-1); see alsoMX-151 andMX-571 |
| MX-417 | - | Photographic bombsight trainer |
| MX-418 | - | Submarine detection training device (M.A.D. - Magnetic Anomaly Detection) |
| MX-419 | - | "Hedgehog" bomb installation on YR-4B, XR-5 and XR-6 helicopters |
| MX-420 | - | Bombing equipment computers (K-1A & K-4 Shoran) |
| MX-421 | - | Head stabilized bombsight |
| MX-422 | United Shoe Machinery | "Amplidyne" four caliber .50 tail gun, mounted on XB-35 |
| MX-423 | - | Preliminary design studies for medium/heavy bomber with forward sweep wing; see alsoMX-716 |
| MX-424 | - | Anti-icing system heat transfer calculations and heat requirement |
| MX-425 | - | 75mm incendiary ammunition tests |
| MX-426 | - | Mock-up of A-20G airplane for installation of special radio equipment and six calibre .50 guns |
| MX-427 | - | Near infra-red receivers and transmitters used in connection with target seeking device |
| MX-428 | - | Far infra-red receivers for VB-6Felix controllable bomb, and VB-3Razon equipment |
| MX-429 | - | Improved light-weight gyro gun sight |
| MX-430 | - | Low-altitude bombsight |
| MX-431 | - | E-17 chemical tanks in B-29 |
| MX-432 | Boeing | Cargo airplane (XC-108A) |
| MX-433 | - | Investigation of monocular optical systems and extension of ranges on Compensating gun sight |
| MX-434 | Lycoming | 5000 hp piston engine (XR-7755) |
| MX-435 | - | Study of 37mm & 75mm cannon installations in heavy bombers |
| MX-436 | Bell | Offensive fighter (XP-63B) |
| MX-437 | Specialties Co. | Bombsight gyro erection system |
| MX-438 | Packard | Piston engines (V-1650-9,-11,-19 and-21) |
| MX-439 | - | Increased tankage capacity for B-17, B-24 and XC-109 |
| MX-440 | - | Caliber .60 aircraft machine gun |
| MX-441 | - | Radar reconnaissance (a.k.a. "Night aerial photography") |
| MX-442 | - | Calculator for optimum spacing of bombs for train bombing |
| MX-443 | - | Pressure distribution at high speeds |
| MX-444 | - | Four-engine test drive composed of a step-up gear box |
| MX-445 | - | Development of an all-purpose, droppable fuel tank |
| MX-446 | - | Deceleration devices for aircraft torpedoes |
| MX-447 | Sperry | Own speed computing sight for 37mm cannon |
| MX-448 | - | Development of quick-change powerplant units |
| MX-449 | - | T-26 20mm cannon tests |
| MX-450 | - | Universal bombsight |
| MX-451 | - | Instructional model of M-Series bombsight |
| MX-452 | - | Tyrell-Horak controlled free-fall parachute |
| MX-453 | - | Countermeasures against special weapons |
| MX-454 | - | Interchangeable wing guns for P-51 wing panels |
| MX-455 | - | Four 20mm cannon installation in XP-75 wing panels |
| MX-456 | - | Water-borne target (Type A-3) |
| MX-457 | - | Radio-controlled flash bomb |
| MX-458 | Frigidaire | Design study of automatic compensating gun sight |
| MX-459 | - | Computing sights in hand-held guns (TI 1562) |
| MX-460 | - | Chemical spray tanks for fighter aircraft (CTI 1469) |
| MX-461 | - | High-altitude bomb ballistics |
| MX-462 | - | 20mm cannon and T-14 feeder installation in P-70 |
| MX-463 | G & A Aircraft | Helicopter (XR-9) |
| MX-464 | General Electric | Gas turbine engine (T31-GE-1 and-3) |
| MX-465 | - | Design study for large cargo transport airplane |
| MX-466 | - | Preliminary design studies for light bomber |
| MX-467 | - | Compound engine project |
| MX-468 | - | Automatic torpedo director |
| MX-469 | - | Project "Silverplate"; Pullman modifications and installation on the atomic bomb drop test aircraft (B-29 #42-6259) |
| MX-470 | - | Installation of 105mm howitzer in medium bomber |
| MX-471 | General Electric | Fire control system for XB-36 -MX-471-F: Feeding and firing system, B-36 fire control system (Ordnance Dept.) |
| MX-472 | - | Preliminary design studies for unconventional escort fighter; continued byMX-667 (XP-85) |
| MX-473 | - | Preliminary design studies for unconventional light bomber |
| MX-474 | - | Preliminary design studies for unconventional medium/heavy bomber |
| MX-475 | Douglas | Turbojet-powered light bomber (XB-43) |
| MX-476 | - | In-flight refueling of fighter aircraft |
| MX-477 | - | Man pick-up project |
| MX-478 | - | Ground controlled approach trainer |
| MX-479 | - | Incorporation of AN/APG-3 AGL equipment in tail turret of B-29 |
| MX-480 | Consolidated-Vultee | Single-seat long-range fighter aircraft (XP-81); related to (or predecessor of)MX-796 |
| MX-481 | - | Aerial flame thrower |
| MX-482 | - | U.S. fighter gyro gun sight tests (K-14 & K-15, MK-18) |
| MX-483 | Fairchild | Gyro gun sight for 20mm turret |
| MX-484 | - | Overland blind-bombing device (H2X) |
| MX-485 | North American | Long-range offensive fighter (XP-82Twin Mustang) |
| MX-486 | - | Radio compass homing device (C-1 pilot) |
| MX-487 | - | Face mask pressure demand oxygen regu1ator |
| MX-488 | - | Cargo aircraft modification studies (use of T31 turboprop engines) |
| MX-489 | - | Medium/heavy bomber modification studies (new engines) |
| MX-490 | - | Light bomber modification studies (use of T31 turboprop engines) |
| MX-491 | - | Fighter aircraft modification studies (related to P-47N) |
| MX-492 | Sperry | S-Series stabilized gun sight for A-17 turrets |
| MX-493 | - | Automatic instrument landing system |
| MX-494 | - | Ground-skimming glide bomb (GB-9) |
| MX-495 | Republic | Long-range photo-reconnaissance airplane (XF-12 /XR-12Rainbow) |
| MX-496 | - | Tank type bomb for chemical warfare |
| MX-497 | - | Devise means to detect and identify enemy aircraft |
| MX-498 | - | T31 20mm cannon tests |
| MX-499 | - | Azon bombing trainer |
[MX-1 ... MX-499][MX-500 ... MX-999][MX-1000 ... MX-1499][MX-1500 ... MX-1999][MX-2000 ... MX-2276]