Encyclopedia Astronautica
FW-4S TEM640


Thiokol solid rocket engine. 27.4 kN. Isp=280s. Used on Advanced Scout, Scout B, Scout D, Scout F, Scout G. First flight 1965.

Thrust (sl): 25.000 kN (5,620 lbf). Thrust (sl): 2,550 kgf.

AKA: Altair 3; TE-M-640.
Gross mass: 301 kg (663 lb).
Unfuelled mass: 25 kg (55 lb).
Height: 2.53 m (8.30 ft).
Diameter: 0.64 m (2.09 ft).
Thrust: 27.40 kN (6,160 lbf).
Specific impulse: 280 s.
Specific impulse sea level: 255 s.
Burn time: 27 s.
Number: 66 .

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Associated Countries
See also
Associated Launch Vehicles
  • Scout B American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 2B + 1 x Castor 2 + 1 x Antares 2 + 1 x FW4S More...
  • Scout F American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 3A + 1 x Castor 2 + 1 x Antares 2B + 1 x Star 20 More...
  • Scout G American all-solid orbital launch vehicle. Four stage vehicle consisting of 1 x Algol 3A + 1 x Castor 2 + 1 x Antares 3 + 1 x Star 20 More...
  • Advanced Scout American all-solid orbital launch vehicle. Proposed upgrade of Scout proposed by the University of Rome with two strap-ons from the Ariane 4. Launch would have been from Italy's San Marco platform off Kenya. Further work cancelled in 1993. 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
  • Altair 3 Solid propellant rocket stage. Loaded/empty mass 301/25 kg. Thrust 27.40 kN. Vacuum specific impulse 280 seconds. More...

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