Selparis

First Flight: 1958
Last Flight: 1961
Stages: 4
Total Mass: 55.11 tons
Payload Mass: 41 kg to LEO
Diameter: 2.67 m
Length: 24 m

First Stage

Type: Core
Arrangement: 1 x Rocketdyne S-3D
Thrust (kN): 667
Propellant: LOX/RP-1
ISP: 248 s
ISP (sea level):
Burn Time: 182 s
Gross Mass: 54.43 tons

Second Stage

Type: Core
Arrangement: 11 x MGM-29 Sergeant solid
Thrust (kN): 73
Propellant: polysulfide-aluminum and ammonium perchlorate
ISP: 214 s
ISP (sea level):
Burn Time: 6 s
Gross Mass: 0.462 tons
Empty Mass: 0.231 tons

Third Stage

Type: Core
Arrangement: 3 x MGM-29 Sergeant solid
Thrust (kN): 20
Propellant: polysulfide-aluminum and ammonium perchlorate
ISP: 214 s
ISP (sea level):
Burn Time: 6 s
Gross Mass: 0.126 tons
Empty Mass: 0.063 tons

Fourth Stage

Type: Core
Arrangement: 1 x MGM-29 Sergeant solid
Thrust (kN): 7
Propellant: polysulfide-aluminum and ammonium perchlorate
ISP: 214 s
ISP (sea level):
Burn Time: 6 s
Gross Mass: 0.042 tons
Empty Mass: 0.021 tons

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