Encyclopedia Astronautica
Improved Orion-1


Solid propellant rocket stage. Loaded mass 400 kg. Thrust 13.00 kN. The Improved Orion motor was a bi-phase propellant system that results in thrust levels of approximately 84.5 kN during the first four seconds of motor burn then trailing off to approximately 13.3 kN until burnout around 25 seconds. The fins were generally configured to provide a burn out spin rate of four cycles per second.

AKA: Orion.
Status: Active.
Gross mass: 400 kg (880 lb).
Height: 1.80 m (5.90 ft).
Diameter: 0.35 m (1.14 ft).
Thrust: 13.00 kN (2,922 lbf).
Burn time: 32 s.
Number: 101 .

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Associated Countries
Associated Engines
  • Orion Aerojet solid rocket engine. 13 kN. Improved Orion motor was a bi-phase propellant system with thrust levels of 84.5 kN during the first four seconds of motor burn, trailing off to 13.3 kN at burnout at 25 seconds. More...

Associated Launch Vehicles
  • Improved Orion American sounding rocket. Unguided solid propellant single stage rocket using a military surplus M112 Hawk rocket motor. The motor was a dual thrust burner with a boost phase of 5 seconds and a sustainer phase of approximately 21 seconds. The rocket accelerated the payload then for 26 seconds with peak acceleration during the boost phase of 21g. A payload mass of 100 kg could be carried to an apogee of approximately 110 km. More...

Associated Manufacturers and Agencies
  • Aerojet American manufacturer of rockets, spacecraft, and rocket engines. Aerojet, Sacramento, CA, USA. 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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