Encyclopedia Astronautica
FW-4D


Thiokol solid rocket engine. 25 kN. Isp=287s. Kick stage motor for Delta E, Delta L. First flight 1965.

Thrust (sl): 21.800 kN (4,901 lbf). Thrust (sl): 2,220 kgf.

Gross mass: 300 kg (660 lb).
Unfuelled mass: 25 kg (55 lb).
Height: 1.48 m (4.85 ft).
Diameter: 0.50 m (1.64 ft).
Thrust: 25.00 kN (5,620 lbf).
Specific impulse: 287 s.
Specific impulse sea level: 250 s.
Burn time: 31 s.
Number: 25 .

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Associated Countries
See also
Associated Launch Vehicles
  • Delta E American orbital launch vehicle. Thor augmented with 3 x Castor 2 motors with Delta E and Altair 2 upper stage. More...
  • Delta L American orbital launch vehicle. Four stage vehicle consisting of 3 x Castor 2 + 1 x LT Thor DSV-2L-1B + 1 x Delta E + 1 x FW4D 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
  • FW-4D Solid propellant rocket stage. Loaded/empty mass 300/25 kg. Thrust 25.00 kN. Vacuum specific impulse 287 seconds. More...

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