Titan IIIM

The Titan IIIM was a planned American expendable launch system, intended to launch the Manned Orbiting Laboratory and other payloads. Development was cancelled in 1969. The projected UA1207 solid booster rockets were eventually used on the Titan IV.[1][2]

Titan IIIM
Titan IIIM proposal
FunctionExpendable launch system
ManufacturerMartin Marietta
Country of originUnited States
Cost per launchUS$22 million (1965)
Size
Height39.0 m (128.0 ft)
Diameter3.05 m (10.0 ft)
Mass836,560 kg (1,844,300 lb)
Stages2
Capacity
Payload to 185 km (115 mi)
Mass17,000 kg (37,000 lb)
Associated rockets
FamilyTitan
Launch history
StatusCancelled
Launch sitesCCAFS LC-40
Vandenberg AFB SLC-6
Total launches0
Boosters – UA1207
No. boosters2
Length34.14 m (112.0 ft)
Diameter3.05 m (10.0 ft)
Empty mass51,230 kg (112,940 lb)
Gross mass319,330 kg (704,000 lb)
Thrust 7,116.999 kN (1,599,965 lbf)
Specific impulse272 s (2.67 km/s)
Burn time120 s
FuelSolid
First stage – Titan IIIB-1
Length23.99 m (78.7 ft)
Diameter3.05 m (10.0 ft)
Empty mass7,000 kg (15,400 lb)
Gross mass139,935 kg (308,504 lb)
Engines2 × LR87-11
Thrust2,413.191 kN (542,507 lbf)
Specific impulse302 s (2.96 km/s)
Burn time161 s
FuelA-50 / N
2O
4
Second stage – Titan IIIB-2
Length8.6 m (28.2 ft)
Diameter3.05 m (10.0 ft)
Empty mass2,900 kg (6,400 lb)
Gross mass37,560 kg (82,810 lb)
Engines1 × LR91-11
Thrust460.314 kN (103,483 lbf)
Specific impulse316 s (3.10 km/s)
Burn time230 s
FuelA-50 / N
2O
4

Development
  • 1969 April 27 - First static test firing of Titan IIIM seven segment solid rocket booster motor. Firing took place at the United Technologies Coyote Canyon test site at the southern edge of San Jose, California,[3] and generated 700,000 kgf (6,900,000 N; 1,500,000 lbf) for two minutes.[1]

Planned flights
  • 1970 - Uncrewed Gemini-B/Titan IIIM qualification flight
  • 1971 - Uncrewed Gemini-B/Titan IIIM qualification flight

References
  1. "Titan 3M". Astronautix.com. Retrieved 25 June 2016.
  2. Shayler, David J. (2002). "Military Gemini". Gemini: Steps to the Moon. Springer-Praxis. ISBN 1-85233-405-3.
  3. Rogers, Paul (6 October 2014). "Historic Silicon Valley site becoming new public open space preserve". San Jose Mercury News. American Geophysical Union. Retrieved 31 December 2018.

Media related to Titan IIIM at Wikimedia Commons


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