Encyclopedia Astronautica
SLS SRB 388


Solid propellant rocket stage. Loaded/empty mass 88,000/13,000 kg. Thrust 2,083.90 kN. Vacuum specific impulse 260 seconds. Booster for SLS A series launch vehicles.

Status: Study 1961.
Gross mass: 88,000 kg (194,000 lb).
Unfuelled mass: 13,000 kg (28,000 lb).
Height: 16.40 m (53.80 ft).
Diameter: 2.58 m (8.46 ft).
Span: 2.58 m (8.46 ft).
Thrust: 2,083.90 kN (468,479 lbf).
Specific impulse: 260 s.
Specific impulse sea level: 235 s.
Burn time: 90 s.

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Associated Countries
Associated Launch Vehicles
  • SLS A-410 American orbital launch vehicle. The smallest identified member of the SLS family, selected to place the Air Force Lunex lunar lander re-entry vehicle in a low earth orbit for initial tests, was the A-410. This consisted of the 'A' Lox/LH2 stage supplemented by 100-inch diameter solid fuel booster rockets. More...
  • SLS A-388 American orbital launch vehicle. The A-388 was the version of the Space Launching System family proposed to fill the SLV-4 requirement - boost to orbit of the Dynasoar manned spaceplane. The booster was dubbed 'Phoenix' - perhaps a hope it could be rescued from the ashes of the manned space program having been turned over to NASA.... 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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