Lockheed X-7

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X-7

Role	Experimental aircraft
Manufacturer	Lockheed Corporation
First flight	April 26, 1951
Retired	1960
Primary user	United States Air Force
Developed into	AQM-60 Kingfisher

The Lockheed X-7 (dubbed the "Flying Stove Pipe") was an American unmanned test bed of the 1950s for ramjet engines and missile guidance technology.

1 Design and development
2 Specifications (X-7A-1)
3 See also
4 References
5 External links

Design and development [edit]

The X-7 was carried aloft by a B-29 or B-50 Superfortress carrier aircraft. A booster rocket ignited after launch and propelled the vehicle to a speed of 1,000 mph (1,625 km/h). The booster was then jettisoned, and the underslung ramjet took over from that point. The X-7 eventually returned to Earth, its descent slowed by parachute. A maximum speed of 2,881 mph (4640 km/h / Mach 4.31) was attained, setting a record for fastest air-breathing aircraft at the time. A total of 130 X-7 flights were conducted from April 1951 to July 1960.

The X-7 was also used to test HEF-2 and Hi Cal-3 zip fuel, which has a superior heating value of 26,500 Btu/lb. compared to hydrocarbon fuel with 18,400 Btu/lb.^[1]

Specifications (X-7A-1) [edit]

General characteristics

Crew: None
Length: 32 ft 9 in (9.98 m)
Wingspan: 12 ft (3.66 m)
Height: 7 ft (2.1 m)
Loaded weight: 8,000 lb (3,600 kg)
Powerplant:
- 1 × Alleghany Ballistics Laboratories X202-C3 solid-fuel rocket, 105,000 lbf (467 kN)
- 1 × various Marquardt MA20 ramjets under test, ()

Performance

Maximum speed: Mach 4.31 (2,881 mph, 4,640 km/h)
Service ceiling: 106,000 ft (32,317 m)

References [edit]

^ "A-11 General VI-1". CIA. January 1968.

External links [edit]

Wikimedia Commons has media related to: Lockheed X-7

Q-5/AQM-60
"Ramjet test missile takes off on supersonic flight." Popular Science, pp. 142-143.

Lockheed and Lockheed Martin aircraft

Manufacturer
designations

Basic Model Numbers	L-1 L-2 L-3 L-4 L-5 L-7 L-8 L-9 L-10 L-11 L-012 (L-013 not assigned) L-014 L-015 L-016 L-017 L-018 L-019 L-020 L-021 L-022 L-023 L-024 (L-025 not assigned) L-026 L-027 (L-028 not assigned) L-029 L-030 L-031 L-032 L-033 L-034 L-035 (L-036 not assigned) L-037 (L-038 and L-039 not assigned) L-040 L-041 L-042 L-044 L-045 L-049 L-050 L-051 L-052 L-060 L-061 L-062 L-075 L-080 L-081 L-082 L-083 L-084 L-085 L-086 L-087 L-088 L-089 L-090 L-091 L-092 L-093 L-094 L-092 L-099 L-100 L-133 L-140 L-141 L-193 L-245 L-246 L-300 L-301 L-329 L-351 L-382 L-500 L-645

Lockheed-California Temporary Design Numbers	CL-282 CL-288 CL-295 CL-320 CL-325 CL-329 CL-346 CL-379 CL-400 CL-407 CL-475 CL-595 CL-704 CL-760 CL-823 CL-901 CL-915 CL-934 CL-981 CL-984 CL-985 CL-1026 CL-1195 CL-1200 CL-1400 CL-1600 CL-1700 CL-1800 CL-1980

By role

Airliners and civil transports	Vega Sirius Altair Orion Electra Electra Junior Super Electra Lodestar Constellation (L-049 L-649 L-749) Super Constellation (L-1049 L-1249) Starliner Saturn Electra L-402 JetStar L-100 L-1011

Military transports	Y1C-12 Y1C-17 Y1C-23 Y1C-25 C-36 C-37 C-40 C-56 C-57 C-59 C-60 C-63 C-66 C-69 UC-85 UC-101 C-104 C-111 C-121 C-130 / C-130J / HC-130 / KC-130 / LC-130 / MC-130 C-139 C-140 C-141 C-5 JO XRO R2O R3O XR4O R5O R6O / R6V R7O / R7V R8V / GV / UV TriStar

Attack and bombers	Y1A-9 A-28 A-29 XB-30 B-34 B-37 AC-130 A-4AR F-117 FB-22

Drones/UAVs	Q-5 Q-12/D-21 MQM-105 P-175 RQ-3 RQ-170 See also: DC-130

EW and reconnaissance	O-56 F-4 F-5 F-14 YO-3 EC-121 EC-130 / EC-130H WC-130 EP-3 RB-69 U-2 / TR-1 A-12 SR-71 PO / WV XW2V

Fighters	XFM-2 XPB-3 YP-24 P-38 XP-49 XP-58 P/F-80 XF-90 F-94 F-97 F-104 (F-104 variants) YF-12 F-16 YF-22 F-22 F-35 FO XFV

Helicopters	CL-475 XH-51 AH-56 VH-71

Maritime patrol	PBO PV P2V P-2 P3V P-3 P-7 S-3 CP-122 CP-140

Trainers	AT-18 T-33 T-40 TO / TV T2V / T-1

Experimental	M-21 NF-104A QT-2 Senior Prom XC-35 XF-104 VZ-10 / XV-4 X-7 X-17 X-26B X-27 X-33 X-35 X-44 X-55 X-56

Names

v t e USAF / Joint Service experimental aircraft (X-plane) designations since 1941

1–25	X-1 X-2 X-3 X-4 X-5 X-6 X-7 X-8 X-9 X-10 X-11 X-12 X-13 X-14 X-15 X-16 X-17 X-18 X-19 X-20 X-21 X-22 X-23 X-24A / B X-25

26–50	X-26 X-27 X-28 X-29 X-30 X-31 X-32 X-33 X-34 X-35 X-36 X-37 X-38 X-39 X-40 X-41 X-42 X-43 X-44 X-45 X-46 X-47A / B / C X-48 X-49 X-50

50–	X-51 X-52¹ X-53 X-54 X-55 X-56

See also	D-558-1 D-558-2 M2-F1 M2-F2 M2-F3 HL-10 AD-1 List of X-planes

¹ Not assigned.

v t e 1947–1951 United States Air Force rocket and missile designations

Air-to-air missiles	AAM-A-1 AAM-A-2

Air-to-surface missiles	ASM-A-1 ASM-A-2

Surface-to-air missiles	SAM-A-1

Surface-to-surface missiles	SSM-A-1 SSM-A-2 SSM-A-3 SSM-A-4 SSM-A-5 SSM-A-6

Launch test vehicles	LTV-A-1

Propulsion test vehicles	PTV-A-1

Rocket test vehicles	RTV-A-1 RTV-A-2 RTV-A-3 RTV-A-4 RTV-A-5

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General	Aircraft manufacturers Aircraft engines manufacturers Gliders Airlines defunct Airports Civil authorities Museums Registration prefixes Rotorcraft manufacturers Timeline

Military	Air forces Weapons Experimental Missiles Unmanned

Accidents/incidents	Commercial airliners by location Fatalities by death toll General aviation Military

Records	Airspeed Altitude Distance Endurance Firsts Large Most-produced aircraft Most-produced rotorcraft

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Lockheed X-7

Contents

Design and development [edit]

Specifications (X-7A-1) [edit]

See also [edit]

References [edit]

External links [edit]

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