Encyclopedia Astronautica
Kappa 4-2


Solid rocket stage. 10.00 kN (2,248 lbf) thrust.

Status: Retired 1961.
Unfuelled mass: 20 kg (44 lb).
Height: 2.70 m (8.80 ft).
Diameter: 0.13 m (0.42 ft).
Thrust: 10.00 kN (2,248 lbf).
Burn time: 3.00 s.
Number: 3 .

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Associated Countries
Associated Engines
Associated Launch Vehicles
  • Kappa 4 Japanese sounding rocket. Two stage vehicle consisting of 1 x Kappa 4 Booster + 1 x Kappa 4 More...

Associated Manufacturers and Agencies
  • ISAS Japanese agency overseeing development of rockets, spacecraft, and rocket engines. Institute of Space and Astronautical Science, Japan. 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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