SM-65B Atlas
Atlas family
· built by Convair
· maiden flight 1958-07-19
Profile data last updated: 2026-08-29T15:37:07.354998+00:00 | 7531-10-18
The Convair SM-65B Atlas, or Atlas B, also designated X-12 was a prototype of the Atlas missile. First flown on 19 July 1958, the Atlas B was the first version of the Atlas rocket to use the stage and a half design with an operational sustainer engine and jettisonable rocket booster section. Unlike later Atlas models, the Atlas B used explosive bolts to jettison the booster section.
Specifications
31.4 mLength
3.66 mDiameter
3 tLaunch mass
1Stages
Payload Capacity
68 kgTo LEO
Lifetime Launch Record
As reported by Launch Library 2 across this rocket's entire history, not just the launches tracked on this site.
1Total launches
1Successful
0Failed
0Upcoming
Launches Tracked on This Site
1In our archive
100.0%Success rate
Dec 18, 1958 23:02 UTCEarliest tracked
Dec 18, 1958 23:02 UTCMost recent
| Mission | Date | Status |
|---|---|---|
| Atlas B | SCORE | Dec 18, 1958 23:02 UTC | Success |