π Analysis
Statistics & insights on rockets and organizations β technology, history, numbers.
Thor Delta G
RetiredMcDonnell Douglas
American orbital launch vehicle family with Thor first stage and a delta second stage.

Key figures
Total launches
2
Successes
2
Failures
0
Success rate
100.0 %
Success streak
2
Maiden flight
Dec 14, 1966
Launch cost
$10 Mio.
Reusable
No
Shortest launch interval β
267d 2h
Planned launches
0
Thor, Thor-Delta family total
85 launches Β· 75 successes Β· 10 failures (15 variants)
π§ Data check
Automatic plausibility checks β anomalies are surfaced transparently here:
- βΉοΈThe figures above apply only to the βThor Delta Gβ variant. The Launch Library counts each variant separately β the Thor, Thor-Delta family totals 85 launches across 15 variants.
Technology
Length
30 m
Diameter
2.44 m
Launch mass
55 t
Liftoff thrust
765 kN
Stages
3
Launches per year
of which in our database: 2
Successes Failures Other/planned
History & events
Sources
- Launch Library 2 (The Space Devs)
- Wikipedia