Vanguard rocket

Vanguard rocket
Missing image
Vanguard_rocket.jpg
Launch of Vanguard rocket. (U.S. Navy)

Stages 3
1 - 1st Stage Engines X-405 X 1
Thrust 134.7 kN
Burn time 248 seconds
Fuels Lox/Kerosene
2 - 2nd Stage Engine AJ10-118 X 1
Thrust 33.8 kN
Burn time 115 seconds
Fuels Nitric acid/UDMH
3 - 3rd Stage Engine GCRC X 1
Thrust 11.6 kN
Burn time 31 seconds
Fuels Solid
Launch Vehicle 1st Launch Success
March 17, 1958
Payload 350 km x 2500 km;
33-degree orbit
1.36 kg to 22.7 kg


Contents

Mission

In August 1955, the DOD DOD Committee on Special Capabilities chose the NRL proposal as it appeared most likely to, by spring 1958, fulfill the following:

  • 1) place a satellite in orbit during the IGY
  • 2) accomplish a scientific experiment in orbit
  • 3) track the satellite and ensure its attainment of orbit

Project Vanguard was chosen from three proposals presented by the United States Air Force, the United States Army, and the United States Navy. The Army's ABMA under Dr. Wernher von Braun had suggested using a modified Redstone rocket (see: Juno I) while the Air Force had proposed using the non-existent Atlas rocket.


Launches

Vanguard launched 3 satellites out of 11 launch attempts:


Specifications

  • Stage Number: 1 - Vanguard
    • Mass: 7,661 kg
    • Empty Mass: 811 kg
    • Thrust (vac): 134.7 kN
    • Isp: 270 lbf·s/lb (2.6 kN·s/kg)
    • Burn time: 145 s
    • Isp (sea level): 248 lbf·s/lb (2.4 kN·s/kg)
    • Diameter: 1.14 m
    • Span: 1.14 m
    • Length: 12.20 m
    • Propellants: Lox/Kerosene
    • Engines: X-405
  • Stage Number: 2 - Delta A
    • Mass: 2,164 kg
    • Empty Mass: 694 kg
    • Thrust (vac): 33.8 kN
    • Isp: 271 lbf·s/lb (2.7 kN·s/kg)
    • Burn time: 115 s
    • Diameter: 0.84 m
    • Span: 0.84 m
    • Length: 5.36 m
    • Propellants: Nitric acid/UDMH
    • Engines: AJ10-118
  • Stage Number: 3 - Vanguard 3
    • Mass: 210 kg
    • Empty Mass: 31 kg
    • Thrust (vac): 11.6 kN
    • Isp: 230 lbf·s/lb (2.3 kN·s/kg)
    • Burn time: 31 s
    • Isp (sea level): 210 lbf·s/lb (2.1 kN·s/kg)
    • Diameter: 0.50 m
    • Span: 0.50 m
    • Length: 2.00 m
    • Propellants: Solid
    • Engines: GCRC

See also

External link

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