Lockheed X-17

Lockheed X-17

Type	Atmospheric reentry testing
Production history
Manufacturer	Lockheed Corporation
Specifications
Length	40 ft 4 in (12.3 m)
Diameter	1st stage: 2 ft 7 in (0.79 m) 2nd stage: 1 ft 5 in (0.43 m) 3rd stage: 0 ft 9.7 in (0.25 m)

Engine	1st stage:1x Thiokol XM20 Sergeant solid-fuel rocket, 48,000 lbf (213 kN) 2nd stage:3x Thiokol XM19 Recruit solid-fuel rocket, 33,900 lbf (150 kN) (each) 3rd stage:1x Thiokol XM19E1 Recruit solid-fuel rocket, 35,950 lbf (160 kN)
Wingspan	7 ft 7 in (2.3 m)
Operational range	135 miles (217 km)
Flight altitude	250 mi (400 km)
Speed	Mach 14.5

The Lockheed X-17 was a three-stage solid-fuel research rocket to test the effects of high mach atmospheric reentry. The first stage of the X-17 carried the rocket to a height of 17 miles (27 km) before burning out. The rocket would then coast on momentum to about 100 miles (160 km) before nosing down for reentry. The second stage engine would then fire before jettisoning and igniting the third and final stage. On April 24, 1957, an X-17 reached a speed of 9,000 miles per hour (14,000 km/h) at Patrick AFB.^[1] Ultimately the X-17 would be travelling towards Earth at up to Mach 14.5.

The X-17 was also used as the booster for the Operation Argus series of three high-altitude nuclear tests conducted in the South Atlantic in 1958.^[2]

References

↑ E. Emme, ed., Aeronautics and Astronautics, 1915-1960, p. 85.
↑ Carey Sublette (20 September 1997). "Operation Argus tests". Nuclear Weapon Archive. Retrieved 2008-01-11.

External links

Wikimedia Commons has media related to X-17.

Lockheed and Lockheed Martin aircraft

Airliners and civil transports	Vega Model 8 Sirius Altair Model 9 Orion Model 10 Electra Model 12 Electra Junior Model 14 Super Electra Model 18 Lodestar Constellation L-049 L-649 L-749 L-1049 Super Constellation L-1249 Super Constellation L-1649 Starliner Saturn L-188 Electra L-402 JetStar L-100 Hercules L-1011 TriStar

Military transports	C-69 Constellation C-121 Constellation C-130 Hercules C-130J Super Hercules DC-130 HC-130 KC-130 LC-130 MC-130 C-141 Starlifter C-5 Galaxy R6V Constitution Tristar (RAF)

Attack and bombers	YP-24 Hudson XB-30 Ventura AC-130 A-4AR Fightinghawk F-117 Nighthawk Have Blue FB-22

Drones/UAVs	AQM-60 Kingfisher D-21 Desert Hawk Desert Hawk III MQM-105 Aquila Polecat RQ-3 Darkstar RQ-170 Sentinel

EW and reconnaissance	YO-3 EC-121 Warning Star EC-130 EC-130H Compass Call WC-130 EP-3 U-2 TR-X A-12 SR-71 Blackbird SR-72

Fighters	XFM-2 YP-24 P-38 Lightning XP-49 XP-58 Chain Lightning P-80 Shooting Star XF-90 F-94 Starfire F-104 Starfighter variants YF-12 F-16 Fighting Falcon F-22 Raptor YF-22 F-35 Lightning II

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

Maritime patrol	P-2 Neptune P-3 Orion P-7 S-3 Viking CP-140 Aurora

Trainers	T-33 T2V SeaStar

Experimental	L-133 NF-104A Senior Peg Senior Prom XC-35 XF-104 XV-4 Hummingbird X-7 X-17 X-26B Frigate CL-1200 Lancer X-33 X-35 X-44 X-55 X-56 XFV QueSST

Other	Air Express Big Dipper Model 44 Excalibur Explorer Little Dipper

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 / C 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 X-57

See also	D-558-1 D-558-2 M2-F1 M2-F2 M2-F3 HL-10 AD-1

¹ Not assigned.

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