Encyclopedia Astronautica
Star 37


Thiokol solid rocket engine. 43.5 kN. Total impulse 161,512 kgf-sec. Motor propellant mass fraction 0.899. Isp=260s. First flight 1963.

Thrust (sl): 33.600 kN (7,554 lbf). Thrust (sl): 3,428 kgf.

Gross mass: 621 kg (1,369 lb).
Unfuelled mass: 63 kg (138 lb).
Height: 0.84 m (2.75 ft).
Diameter: 0.66 m (2.16 ft).
Thrust: 43.50 kN (9,779 lbf).
Specific impulse: 260 s.
Specific impulse sea level: 220 s.
Burn time: 42 s.
Number: 180 .

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Associated Countries
Associated Spacecraft
  • GPS Block 2R American navigation satellite. 21 launches, 1997.01.17 (USA 132) to 2009-08-17. Launches began in 1997 of 'GPS-IIR' replenishment satellites, produced by General Electric Astrospace (later acquired by Lockheed Missiles & Space). More...

See also
Associated Launch Vehicles
  • Titan 3BAS2 American orbital launch vehicle. Configuration of Titan 3B proposed by Martin in mid-1960's. Titan 3B for deep space missions with Centaur upper stage, Algol strapons for liftoff thrust augmentation. Never flown. More...
  • Atlas Agena D American orbital launch vehicle. Atlas D with further improved and lightened Agena upper stage. More...
  • Delta J American orbital launch vehicle. Four stage vehicle consisting of 3 x Castor + 1 x Thor DSV-2C + 1 x Delta E + 1 x Star 37D More...
  • Delta M American orbital launch vehicle. Long Tank Thor augmented with 3 Castor 2 boosters and Delta E / Burner 2 (Star 37D) upper stages. More...
  • N-2 Licensed version of Delta built in Japan using both US and Japanese components. 4 stage vehicle. More...
  • Delta 0100 American orbital launch vehicle. The military Thor-Delta vehicles were developed into the first of a series of commercial satellite launch vehicles. The Delta 0100 series featured Castor 2 solid propellant strap-ons and a Long Tank Thor core with MB-3 engine. More...
  • Delta 1000 American orbital launch vehicle. The Delta 1000 series used Castor 2 strap-ons and the Extended Long Tank core with MB-3 engine. More...
  • Thor Burner American orbital launch vehicle. Thor DM-18A with 'Burner' upper stage solid rocket packages used for launch of classified payloads. More...
  • Delta 2000 American orbital launch vehicle. The Delta 2000 series used Castor 2 strap-ons together with an Extended Long Tank core equipped with the more powerful RS-27 engine. This engine was derived from surplus H-1 engines intended for the Saturn IB booster of the Apollo programme. The Delta P upper stage was built by Douglas and used surplus Apollo lunar module engines from TRW. More...
  • Delta 3000 American orbital launch vehicle. The Delta 3000 series upgraded the boosters to Castor 4 solid propellant strap-ons, while retaining the Extended Long Tank core with RS-27 engine. The 3910 series used the TRW Lunar Module engine in the second stage, while the 3920 series reintroduced the Aerojet AJ110 Delta engine. More...

Associated Manufacturers and Agencies
  • Thiokol American manufacturer of rocket engines and rockets. Thiokol Corporation, Ogden, UT, 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...

Associated Stages
  • Burner 2 Solid propellant rocket stage. Loaded/empty mass 774/116 kg. Thrust 43.55 kN. Vacuum specific impulse 285 seconds. Burner II was a launch vehicle upper stage developed by Boeing for the Air Force Space Systems Division. It was the first solid-fuel upper stage with full control and guidance capability developed for general space applications. More...

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