Titan IIIC

Titan IIIC
Launch of a Titan IIIC
FunctionMedium-lift launch vehicle
ManufacturerMartin
Country of originUnited States
Size
Height137 ft (42 m)
Diameter10 ft (3.0 m)
Mass1,380,510 lb (626,190 kg)
Stages2-3
Capacity
Payload to LEO
Mass28,900 lb (13,100 kg)
Payload to GTO
Mass6,600 lb (3,000 kg)
Payload to Mars
Mass2,650 lb (1,200 kg)
Associated rockets
FamilyTitan
Launch history
StatusRetired
Launch sitesLC-40 & 41, CCAFS
SLC-6, Vandenberg AFB
Total launches36
Success(es)31
Failure(s)5
First flight18 June 1965
Last flight6 March 1982
Boosters (Stage 0) – UA1205
No. boosters2
Maximum thrust1,315,000 lbf (5,850 kN)
Specific impulse263 secs
Burn time115 seconds
PropellantSolid
First stage
Powered by2 LR87-AJ9
Maximum thrust1,941.7 kN (436,500 lbf)
Burn time147 seconds
PropellantN2O4 / Aerozine 50
Second stage
Powered by1 LR91-AJ9
Maximum thrust453.1 kN (101,900 lbf)
Burn time205 seconds
PropellantN2O4 / Aerozine 50
Upper stage – Transtage
Powered by2 AJ-10-138
Maximum thrust16,000 lbf (71 kN)
Burn time440 seconds
PropellantN2O4 / Aerozine 50

The Titan IIIC was an expendable launch system used by the United States Air Force from 1965 until 1982. It was the first Titan booster to feature large solid rocket motors and was planned to be used as a launcher for the Dyna-Soar, though the spaceplane was cancelled before it could fly. The majority of the launcher's payloads were DoD satellites, for military communications and early warning, though one flight (ATS-6) was performed by NASA. The Titan IIIC was launched exclusively from Cape Canaveral while its sibling, the Titan IIID, was launched only from Vandenberg AFB.