Encyclopedia Astronautica
Vanguard X-248

Credit: © Mark Wade
American orbital launch vehicle. Version of Vanguard with X-248 upper stage.

LEO Payload: 20 kg (44 lb).

Gross mass: 10,000 kg (22,000 lb).
Payload: 20 kg (44 lb).
Height: 22.10 m (72.50 ft).
Diameter: 1.14 m (3.74 ft).
Thrust: 120.00 kN (26,970 lbf).
Apogee: 3,000 km (1,800 mi).

More... - Chronology...

Associated Countries
See also
  • Vanguard Vanguard was the 'civilian' vehicle developed by the US Navy to launch America's first satellite as part of the International Geophysical Year. The Army / von Braun Jupiter-C instead launched the first US satellite after Sputnik and Vanguard's public launch failure. The second stage design led to the Able upper stage for Thor/Atlas, and then to the Delta upper stage still in use in the 21st Century. The original version of Vanguard used a Grand Central final stage. More...

Associated Manufacturers and Agencies
  • NRL American manufacturer of rockets and spacecraft. Naval Research Laboratory, Washington, DC, USA. More...

Associated Stages
  • Delta A Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 2,164/694 kg. Thrust 33.80 kN. Vacuum specific impulse 271 seconds. Able was only the first of many engine and application programs that flowed from the Vanguard experience base. These included Able, Ablestar, Delta, Fat Delta, the Japanese N II, and applications or offshoots such as Hydra, Saint (Satellite Intercept), and other classified programs. More...
  • Vanguard 3 Solid propellant rocket stage. Loaded/empty mass 210/31 kg. Thrust 11.56 kN. Vacuum specific impulse 230 seconds. More...
  • Vanguard Lox/Kerosene propellant rocket stage. Loaded/empty mass 7,661/811 kg. Thrust 134.79 kN. Vacuum specific impulse 270 seconds. More...

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