Encyclopedia Astronautica
Martlet 4i-1


Solid propellant rocket stage. Loaded/empty mass 655/114 kg. Thrust 67.60 kN. Vacuum specific impulse 300 seconds.

Status: Study.
Gross mass: 655 kg (1,444 lb).
Unfuelled mass: 114 kg (251 lb).
Height: 4.00 m (13.10 ft).
Diameter: 0.30 m (0.98 ft).
Span: 0.30 m (0.98 ft).
Thrust: 67.60 kN (15,197 lbf).
Specific impulse: 300 s.
Burn time: 23 s.

More... - Chronology...


Associated Countries
Associated Engines
  • Martlet 4-1 Bull solid rocket engine. 67.7 kN. Development ended 1966. Isp=300s. Used on Martlet 4 launch vehicle. 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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