Launch of the maiden flight of the Atlas I, with the CRRES satellite
Function
Expendable launch system
Manufacturer
General Dynamics
Country of origin
United States
Size
Height
43.90m (144.00 ft)
Diameter
3.05m (10 ft)
Mass
164,300kg (362,200 lb)
Stages
2.5
Capacity
Payload to 185 km (115 mi) LEO
Mass
5,900 kg (13,000 lb)[1]
Payload to GTO
Mass
2,375 kg (5,236 lb)[2]
Associated rockets
Family
Atlas
Launch history
Status
Retired
Launch sites
LC-36B, Cape Canaveral
Total launches
11
Success(es)
8
Failure(s)
3
First flight
July 25, 1990
Last flight
April 25, 1997
Boosters – MA-5[3]
No. boosters
1
Powered by
2 LR-89-7
Maximum thrust
1,901.6 kN (427,500 lbf)[3]
Specific impulse
293.4 s (2.877 km/s)
Burn time
155 seconds[2]
Propellant
RP-1 / LOX
First stage
Powered by
1 LR-105-7
Maximum thrust
386.4 kN (86,900 lbf)[3]
Specific impulse
316 s (3.10 km/s)
Burn time
266 seconds[2]
Propellant
RP-1 / LOX
Second stage – Centaur
Powered by
2 RL-10A
Maximum thrust
147 kN (33,000 lbf)
Specific impulse
449 s (4.40 km/s)
Burn time
410 seconds[2]
Propellant
LH2 / LOX
[edit on Wikidata]
The Atlas I was a US expendable launch system manufactured by General Dynamics in the 1990s to launch a variety of satellites. It was largely a commercial rebrand of the Atlas G (although it did fly multiple government payloads), but did feature several electrical and guidance improvements.[4] Atlas I did not feature any major payload capacity improvements over its predecessor[1] but did offer a larger payload fairing option.[2] Eleven launches took place, with three failures.
Atlas I would be further developed and improved upon to produce the highly successful Atlas II rocket.[2]
^ abGunter D. Krebs. "Atlas-1 (Atlas I)". Gunter's Space Page. Retrieved July 17, 2022.
^ abcNorbert Brügge. "Variants of the "stage and a half" drive system (MA) of the Atlas rocket". Archived from the original on January 20, 2016. Retrieved July 17, 2022.
^Mark Wade. "Atlas I". www.astronautix.com. Archived from the original on October 16, 2016. Retrieved August 18, 2020.
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