Viking 4 through 6
Type: Upper Stage Engine and Booster Engine (Viking 6)
Country of Origin: Europe
Manufacturer:
First Flight:
Status: Retired
Propellant (O/F): Nitrogen Tetroxide/Unsymmetrical Dimethylhydrazine (UH25 in Viking 4B, 5C, 6)
Mixture Ratio (O/F by mass): 1.86; 1.70 (4B, 5C, 6)
Cycle: Gas Generator
Chambers: 1
Thrust (vac.): 713 kN (4); 800 kN (4B); 758 kN (5C); 750 kN (6)
Thrust (s.l.): 678 kN (5C)
Throttle: none
ISP (vac.):
ISP (s.l.):
Chamber Pressure:
Nozzle Ratio:
Burn time:
Ignitions: 1
Mass: 826 kg
Length: 3.51 m; 2.87 m (Viking 5C and 6)
Diameter: 1.70 m
Used in: Ariane 1, Ariane 2-4 (Viking 4B)
Links: