Thor Delta M
Thor familyMcDonnell DouglasRetired
American orbital launch vehicle family with Thor first stage and a delta second stage.

Specifications
- Thrust
- 2,140 kN
- Height
- 34 m
- Diameter
- 2.44 m
- Launch mass
- 103 t
- Stages
- 3
- Launch cost
- $22.3M
- LEO capacity
- 355 kg
- GTO capacity
- 355 kg
Specifications from Launch Library. Figures the operator has not published are omitted.
Flight record
12flightswith a definitive outcome
83.3%success rate10 of 12
2failuresincluding partial failures
7success streakcurrent
First flight September 19, 1968 · latest February 3, 1971
Counted from padside's own launch record, the same basis as the stats page.
Flights per year
- Successful
- Failed
Show the numbers for Thor Delta M flights per year
| Year | Successful | Failed | Total |
|---|---|---|---|
| 1968 | 1 | 1 | 2 |
| 1969 | 3 | 1 | 4 |
| 1970 | 5 | 0 | 5 |
| 1971 | 1 | 0 | 1 |