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North American MQM-42

From Wikipedia, the free encyclopedia
MQM-42 Redhead/Roadrunner
Launch of a MQM-42
General information
TypeTarget drone
National originUnited States
ManufacturerNorth American Aviation
Primary userUnited States Army
History
First flight1961

TheMQM-42 was a supersonictarget drone developed byNorth American Aviation (from 1967North American Rockwell). Developed in two subvariants,Redhead andRoadrunner, it was used by theUnited States Army in the 1960s and 1970s.

Design and development

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Given the company designationNA-273, the Redhead/Roadrunner drone program produced a small aircraft of largely conventional design, with smalldelta wings and adownswept tailplane; thevertical stabilizer doubled as a pylon for the aircraft'sramjet engine. Asolid-propellant rocket provided thrust until the ramjet reached operating speed; launch was from the same launcher as that used by theMGR-3 Little John battlefield rocket.[1] Two minor variants of the drone were produced; 'Redhead' was optimized for high-altitude flight, at heights of up to 60,000 feet (18,000 m), while 'Roadrunner' was a variant for low-altitude operation as low as 300 feet (91 m) above the ground, and both could reach speeds of betweenMach 0.9 and Mach 2. Anautopilot, set to maintain a preset altitude, provided control of the drone;radio command guidance from a ground control station could override the autopilot. At the end of a flight, if the target drone had not been shot down, recovery could be either on command from the ground station, or automatic in case of fuel exhaustion or loss of control; aretrorocket would decelerate the drone to allow for deployment of a recoveryparachute.[2]

Operational history

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First flight of the NA-273 took place in 1961; in 1963, the designationMQM-42A was applied to both variants. The MQM-42 was used primarily to provide training in tracking and engaging targets for theMIM-23 Hawk surface-to-air missile;[3] it remained in service with the United States Army through the mid-1970s.[2]

Specifications (MQM-42A)

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Data from Parsch 2007[2]

General characteristics

  • Crew: None
  • Length: 24 ft 10 in (7.57 m)
  • Wingspan: 6 ft 3 in (1.91 m)
  • Gross weight: 900 lb (408 kg)
  • Powerplant: 1 ×Marquardt MA-74ramjet, 1,790 lbf (8.0 kN) thrust
  • Powerplant: 1 × Rocketdyne solid-fuelrocket booster, 6,000 lbf (27 kN) thrust

Performance

  • Maximum speed: Mach 2+
  • Range: 250 mi (400 km, 220 nmi)
  • Service ceiling: 60,000 ft (18,000 m)

See also

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Aircraft of comparable role, configuration, and era

Related lists

References

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Citations

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  1. ^Jane's 1965-1966, p. 455.
  2. ^abcParsch 2007
  3. ^Haggerty 1968, p. 185.

Bibliography

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