Thor family
Thor Delta N
American orbital launch vehicle family with Thor first stage and a delta second stage.
Flights flown6
Success rate83.3%5/6
Maiden flight1968-08-16
Peak year19682 flights
Thor Delta N is built by McDonnell Douglas of the United States. It first flew on 16 August 1968 and last flew on 12 March 1972.
Flight record
83.3% success rate5 of 6 flown · 1 failed
1968peak 1968 · 2 flights1972
First flight1968-08-16
Latest flight1972-03-12
Failures1
Consecutive successes1
Fastest turnaround41d 4h
Payload
| Launch cost | $18.8M |
|---|
Vehicle
| Stages | 2 |
|---|---|
| Length | 33m |
| Diameter | 2.44m |
| Launch mass | 90t |
| Liftoff thrust | 1,590kN |
| Maiden flight | 1968-08-16 |
| Reusable | No |
Pads used
Orbits delivered
Low Earth Orbit3Sun-Synchronous Orbit2Polar Orbit1
Launch history
| Date | Mission | Pad | Orbit | Outcome |
|---|---|---|---|---|
| 1972-03-12 | Thor Delta N | TD-1A | Space Launch Complex 2E | Polar Orbit | Success |
| 1971-09-29 | Thor Delta N | OSO 7 | Space Launch Complex 17A | Low Earth Orbit | Failure |
| 1969-08-09 | Thor Delta N | OSO 6 | Space Launch Complex 17A | Low Earth Orbit | Success |
| 1969-06-29 | Thor Delta N | Biosat 3 | Space Launch Complex 17A | Low Earth Orbit | Success |
| 1968-12-15 | Thor Delta N | ESSA 8 | Space Launch Complex 2E | Sun-Synchronous Orbit | Success |
| 1968-08-16 | Thor Delta N | ESSA 7 | Space Launch Complex 2E | Sun-Synchronous Orbit | Success |
Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.
Further reading: Wikipedia