Atlas I
Country of Origin: United States
Manufacturer: Convair
Height: 43.9 m
Diameter: 3.05 m (4.9 m with outboard booster fairing)
Payload to LEO: 3.63 tons (GTO: 2.25 tons)
Total Mass: 164.3 tons
Launch Sites: Cape Canaveral
First Flight: July 27, 1990
Last Flight: April 24, 1997
Total Launches: 11
Successful Launches: 8
Atlas I
| Stage | Diameter | Fuel | Engine | Time | Thrust (Vac.) | ISP (SL/Vac.) | Mass/Empty Mass |
|---|---|---|---|---|---|---|---|
| 1 (Boosters) | RP-1 / LOX | 2 x LR89-NA-7 | 158 s | 2 x 899 kN | 258 / 282 s | ||
| 1 (Sustainer) | 3.05 m | RP-1 / LOX | LR105-NA-7 | 256 s | 386 kN | 220 / 316 s | 143.2 / 5.67 tons |
| 2 (Centaur D) | 3.05 m | LH2 / LOX | 2 x RL-10A-3-3A | 409.5 s | 2 x 73.4 kN | ? / 444 s | 16.76 / 2.97 |
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