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Atlas V 421

Atlas family · United Launch Alliance · Retired

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Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The 421 version uses a 4m wide fairing, 2 solid rocket boosters and one engine on the Centaur stage.

Specifications

Thrust
Height
58.3 m
Diameter
3.8 m
Launch mass
433 t
Stages
2
Launch cost
$123M
LEO capacity
14,067 kg
GTO capacity
6,890 kg
GEO capacity
SSO capacity

Vehicle specifications from Launch Library; blanks are unpublished figures.

Flight record

Flights
9
Launches with a definitive outcome
Success rate
100%
9 of 9
Current success streak
9
Landings
0
0 attempts · 0 droneship / 0 RTLS
Fastest turnaround
Between consecutive booster flights

Counted from padside's own launch record — the same basis as the Stats page.

Launches