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Class: Manned. Type: Spaceplane. Destination: Suborbital. Nation: USA. Manufacturer: Northrop. The crashed M2-F2 was rebuilt as the M2-F3 with enlarged vertical stabilizers. Maximum speed achieved was Mach 1.6, top altitude 21,800 m. The final X-30 National Aerospace Plane configuration seemed to owe much to the M2. Length: 6.77 m (22.21 ft). Maximum Diameter: 2.93 m (9.61 ft). Span: 2.93 m (9.61 ft). Mass: 3,600 kg (7,900 lb). Main Engine: XLR-11. Main Engine Thrust: 26.400 kN (5,935 lbf). Main Engine Propellants: Lox/Alcohol. Main Engine Propellants: 1,300 kg (2,800 lb). Backup Main Engine Thrust: 4.452 kN (1,001 lbf). L/D Hypersonic: 1.30. Spacecraft delta v: 1,000 m/s (3,200 ft/sec). Electrical System: Batteries. M2-F3 Chronology
Bibliography and Further Reading - Gatland, Kenneth, Manned Spacecraft, Macmillan, New York, 1968. ISBN: 0025428209. First of a marvelous series of pocket-size hardbacks covering spacecraft and rocketry. More at amazon.com...
- Miller, Jay,, The X-Planes, Aerofax, Arlington, Texas, 1988. ISBN: 1857801091. Tremendous account of the entire X- experimental series of US aircraft, including the rocket planes X-1, X-15, and X-20. Another outstanding Jay Miller book. More at amazon.com...
- Miller, Ron, The Dream Machines, Krieger, Malabar, Florida, 1993. ISBN: 0894640399. Sensational chronological roundup of text, photos, and sketches of virtually every spacecraft and launch vehicle design every conceived but never built. A gold mine for space-struck baby boomers. More at amazon.com...
- Houchin II, Roy and Smith, Terry, Quest, "X-20 (7 articles)", 1994, Volume 3, Issue 4, page 4.
- Peebles, Curtis, Spaceflight, "The Origins of the US Space Shuttle - 1", 1979, Volume 21, page 435.
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