The Thor DM-18A was an American suborbital launch vehicle. It flew 50 times. It had 6 failures, 3 partial failures, and 41 successes. It had a 82% launch reliability. Its first flight attempt was on 5 November 1958. Its first successful launch was on 16 December 1958. Its last launch was on 19 June 1962. The Thor DM-18A was evolved from the Thor DM-18, the first Thor rocket. Thor DM-18A was the first operational finless variant of the original missile.
[1]
[2]
Launch history
The data in this table comes from
[3]
[4]
Date/Time (UTC)
|
Rocket
|
S/N
|
Launch Site
|
Payload
|
Function
|
Orbit
|
Outcome
|
Remarks
|
1958-11-05 08:53
|
Thor DM-18A
|
Thor 138
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Failure
|
Maiden flight of Thor DM-18A. Flight control failure. RSO T+45 seconds.
|
1958-11-26 09:09
|
Thor DM-18A
|
Thor 140
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Partial failure
|
Loss of guidance system power caused the missile to overshoot its target point by 22 miles.
|
1958-12-06 00:41
|
Thor DM-18A
|
Thor 145
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Partial failure
|
LOX tank pressurization failure led to loss of thrust. Missile impacted 20 miles short of the target point.
|
1958-12-16 23:44:45
|
Thor DM-18A
|
Thor 151
|
VAFB LC-75-1-1
|
|
Missile test
|
Suborbital
|
Success
|
First Thor launch from Vandenberg AFB
|
1958-12-17 04:00
|
Thor DM-18A
|
Thor 146
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1958-12-31 02:00
|
Thor DM-18A
|
Thor 138
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Failure
|
Flight control failure. RSO T+40 seconds.
|
1959-01-30 23:53
|
Thor DM-18A
|
Thor 154
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-03-22 00:58
|
Thor DM-18A
|
Thor 158
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-03-27 04:02
|
Thor DM-18A
|
Thor 162
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-04-16 20:46
|
Thor DM-18A
|
Thor 161
|
VAFB LC-75-2-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-04-23 05:30
|
Thor DM-18A
|
Thor 176
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-04-25 05:00
|
Thor DM-18A
|
Thor 164
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-05-12 17:35
|
Thor DM-18A
|
Thor 187
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-05-23 02:42
|
Thor DM-18A
|
Thor 184
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-06-16 21:45
|
Thor DM-18A
|
Thor 191
|
VAFB LC-75-2-7
|
|
Missile test
|
Suborbital
|
Failure
|
Pitch and roll program failed to initiate. RSO T+50 seconds.
|
1959-06-26
|
Thor DM-18A
|
Thor 198
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-06-30 02:37
|
Thor DM-18A
|
Thor 194
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-07-21 07:33
|
Thor DM-18A
|
Thor 203
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Failure
|
Pitch and roll program failed to initiate. RSO T+40 seconds.
|
1959-07-24 12:47
|
Thor DM-18A
|
Thor 202
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-08-03 21:41
|
Thor DM-18A
|
Thor 175
|
VAFB LC-75-1-1
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-08-06 02:48
|
Thor DM-18A
|
Thor 208
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-08-14 09:00
|
Thor DM-18A
|
Thor 204
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-08-14 19:36:04
|
Thor DM-18A
|
Thor 190
|
VAFB LC-75-2-6
|
|
Missile test
|
Suborbital
|
Partial failure
|
Premature propellant depletion. Planned range not achieved.
|
1959-08-27 12:30
|
Thor DM-18A
|
Thor 216
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-09-12
|
Thor DM-18A
|
Thor 217
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-09-17 21:09
|
Thor DM-18A
|
Thor 228
|
VAFB LC-75-1-2
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-09-22 18:00
|
Thor DM-18A
|
Thor 222
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-10-06 16:41
|
Thor DM-18A
|
Thor 235
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-10-06 18:26
|
Thor DM-18A
|
Thor 239
|
VAFB LC-75-2-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-10-14 04:15
|
Thor DM-18A
|
Thor 221
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-10-21 22:57
|
Thor DM-18A
|
Thor 220
|
VAFB LC-75-1-1
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-10-29 02:12
|
Thor DM-18A
|
Thor 230
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-11-03
|
Thor DM-18A
|
Thor 238
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-11-12 19:24
|
Thor DM-18A
|
Thor 181
|
VAFB LC-75-1-2
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-11-19
|
Thor DM-18A
|
Thor 244
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-12-01 17:00
|
Thor DM-18A
|
Thor 254
|
CCAFS LC-18B
|
|
Missile test
|
Suborbital
|
Success
|
|
1959-12-02 05:29
|
Thor DM-18A
|
Thor 265
|
VAFB LC-75-1-1
|
|
Missile test
|
Suborbital
|
Failure
|
|
1959-12-15 02:14
|
Thor DM-18A
|
Thor 185
|
VAFB LC-75-1-2
|
|
Missile test
|
Suborbital
|
Failure
|
Flight control failure. Missile broke up T+60 seconds.
|
1959-12-17
|
Thor DM-18A
|
Thor 255
|
CCAFS LC-17B
|
|
Missile test
|
Suborbital
|
Success
|
|
1960-01-21 20:10
|
Thor DM-18A
|
Thor 215
|
VAFB LC-75-1-2
|
|
Missile test
|
Suborbital
|
Success
|
|
1960-03-02 20:06
|
Thor DM-18A
|
Thor 272
|
VAFB LC-75-2-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1960-06-22 23:26
|
Thor DM-18A
|
Thor 233
|
VAFB LC-75-2-7
|
|
Missile test
|
Suborbital
|
Success
|
|
1960-10-11 21:53
|
Thor DM-18A
|
Thor 186
|
VAFB LC-75-2-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1960-12-13 20:08
|
Thor DM-18A
|
Thor 267
|
VAFB LC-75-2-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1961-03-30 05:13:43
|
Thor DM-18A
|
Thor 243
|
VAFB LC-75-2-7
|
|
Missile test
|
Suborbital
|
Success
|
|
1961-06-20 23:54
|
Thor DM-18A
|
Thor 276
|
VAFB LC-75-2-7
|
|
Missile test
|
Suborbital
|
Success
|
|
1961-09-06 22:30
|
Thor DM-18A
|
Thor 165
|
VAFB LE-7
|
|
Missile test
|
Suborbital
|
Success
|
|
1961-12-06 01:30
|
Thor DM-18A
|
Thor 214
|
VAFB LE-8
|
|
Missile test
|
Suborbital
|
Success
|
|
1962-03-19 23:28
|
Thor DM-18A
|
Thor 229
|
VAFB LE-7
|
|
Missile test
|
Suborbital
|
Success
|
|
1962-06-19 00:30
|
Thor DM-18A
|
Thor 269
|
VAFB LE-8
|
|
Missile test
|
Suborbital
|
Success
|
|
Launch statistics
Launch outcome
- Success
- Partial Failure
- Failure
|
Launchpad
|
References