Encyclopedia Astronautica
Castor 1


Solid propellant rocket stage. Loaded/empty mass 3,852/535 kg. Thrust 286.00 kN. Vacuum specific impulse 247 seconds.

Cost $ : 1.010 million.

Status: Active.
Gross mass: 3,852 kg (8,492 lb).
Unfuelled mass: 535 kg (1,179 lb).
Height: 5.92 m (19.42 ft).
Diameter: 0.79 m (2.59 ft).
Span: 0.79 m (2.59 ft).
Thrust: 286.00 kN (64,296 lbf).
Specific impulse: 247 s.
Specific impulse sea level: 232 s.
Burn time: 27 s.
Number: 586 .

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Associated Countries
Associated Engines
  • M33-20-4 Thiokol solid rocket engine. 286 kN. Isp=247s. Used as apogee kick motor on Delta D, LT Thor Agena D, Scout X-1, Scout X-2, Scout X-3, Scout X-4, TA Thor Agena B, TA Thor Agena D. First flight 1960. More...

Associated Launch Vehicles
  • Scout X American suborbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1A + 1 x Castor + 1 x Antares + 1 x Altair More...
  • Scout X-1 American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair More...
  • Blue Scout Jr American suborbital launch vehicle. Four stage vehicle consisting of 1 x Castor + 1 x Antares + 1 x Alcor + 1 x Cetus More...
  • RAM A American all-solid orbital launch vehicle. Employed by NACA-Langley for accelerating aerodynamic models. Could lift 34 kg to 1271 km. 5 stage vehicle. More...
  • Scout X-1A American all-solid orbital launch vehicle. Five stage vehicle consisting of 1 x Algol 1B + 1 x Castor + 1 x Antares + 1 x Altair + 1 x Cetus More...
  • Scout X-2 American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1D + 1 x Castor + 1 x Antares 2 + 1 x Altair More...
  • Scout X-2M American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1D + 1 x Castor + 1 x Antares 2 + 1 x MG-18 More...
  • Scout X-3A American all-solid orbital launch vehicle. Five stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x Altair + 1 x Cetus More...
  • RAM B American all-solid orbital launch vehicle. Three stage vehicle consisting of 1 x Castor + 1 x Antares + 1 x Alcor More...
  • Castor-Recruit American sounding rocket. Two stage vehicle consisting of 1 x Castor + 1 x Recruit More...
  • Scout X-3 American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x Altair More...
  • Scout X-2 1C American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1C + 1 x Castor + 1 x Antares 2 + 1 x Altair More...
  • Scout X-3M American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x MG-18 More...
  • Scout X-4 American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x Altair 2 More...
  • Scout X-2B American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 1D + 1 x Castor + 1 x Antares 2 + 1 x Altair 2 More...
  • Athena RTV American test vehicle. The Athena was designed to simulate the re-entry environment of an intercontinental ballistic missile and was one of the few examples of sustained interstate missile tests within the United States. More...
  • Scout X-4A American all-solid orbital launch vehicle. Five stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 + 1 x Altair 2 + 1 x Cetus More...
  • Delta D American orbital launch vehicle. Four stage vehicle consisting of 3 x Castor + 1 x Thor DSV-2C + 1 x Delta D + 1 x Altair 2 More...
  • Scout X-3C American all-solid orbital launch vehicle. Three stage vehicle consisting of 1 x Algol 2A + 1 x Castor + 1 x Antares 2 More...
  • Delta E American orbital launch vehicle. Thor augmented with 3 x Castor 2 motors with Delta E and Altair 2 upper stage. More...
  • Strypi American target missile. Family of re-entry vehicle test boosters and anti-missile targets using a Castor first stage with two recruit strap-ons, plus a range of upper stages. More...
  • Strypi IV American target missile. Three stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x Star 26 More...
  • Delta G American orbital launch vehicle. Three stage vehicle consisting of 3 x Castor + 1 x Thor DSV-2C + 1 x Delta E More...
  • Castor American suborbital launch vehicle. Single stage version. More...
  • Strypi VI American target missile. Four stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x ? + 1 x ? More...
  • Castor Lance American sounding rocket. Two stage vehicle consisting of 1 x Castor + 1 x Lance More...
  • Strypi IIR American target missile. Two stage vehicle consisting of 2 x Recruit + 1 x Castor More...
  • Strypi VIIR American target missile. Four stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x Alcor IB + 1 x Alcyone More...
  • Talos Castor American sounding rocket. Two stage sounding rocket consisting of 1 x Talos booster + 1 x Castor More...
  • DOT American sounding rocket. Three stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x Star 26C More...
  • Strypi XI American target missile. Four stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x Antares 2 + 1 x Star 27 More...
  • Castor-Orbus American sounding rocket. Vehicle consisting 1 x Castor + 1 x Orbus 1, sometimes augmented with a Recruit booster stage. More...
  • Strypi IX American target missile. Two stage vehicle consisting of 1 x Castor + 1 x Antares 2 More...
  • Strypi Tomahawk American target missile. Four stage vehicle consisting of 2 x Recruit + 1 x Castor + 1 x ? + 1 x Tomahawk More...

Associated Propellants
  • Solid Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. More...

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