Head to head

Ariane 44LP vs Atlas IIAS

Two vehicles in the same payload class. Every figure below comes from the same two sources for both rockets, and a row appears only when both publish the input.

Payload to low Earth orbit

Relative

Ariane 44LP: 8,000 kg

Atlas IIAS: 6,580 kg

Side by side

9 comparable figures

The highlighted value wins the row. Rows where neither direction is better, like length or stage count, highlight nothing.

Metric	Ariane 44LP	Atlas IIAS
Flights flown	26	30
Success rate	96.2%	100%
Payload to LEO (kg)	8,000	6,580
Payload to GTO (kg)	4,170	2,810
Liftoff thrust (kN)	5,270	4,391
Length (m)	58.4	47.54
Diameter (m)	3.8	3.04
Launch mass (t)	420	204
Stages	2	3

Ariane 44LP

Flight record

96.2% success rate25 of 26 flown · 1 failed

1988peak 1994 · 3 flights2001

Maiden flight 1988-06-15. Retired.

Atlas IIAS

Flight record

100% success rate30 of 30 flown

1993peak 1997 · 5 flights2004

Maiden flight 1993-12-16. Retired.

Ariane 44LP is built by Aérospatiale of France (company profile on Space Index).Atlas IIAS is built by Lockheed Martin of the United States (company profile on Space Index).

Full specifications and the complete launch history for each: Ariane 44LP · Atlas IIAS.

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.