Department of the Air Force Report, 1996

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Shortly after the Challenger accident in 1986, when the US government decided to
offload commercial payloads from the Space Shuttle, Martin Marietta announced plans
to develop a Titan III commercial launch vehicle with its own funds. The commercial
Titan III is derived from the Titan 34D with a stretched second stage and a bulbous
shroud for dual or dedicated payloads. The first commercial Titan III was launched
with two communications satellites in December 1989. Table 44 shows a summary of
Titan space-vehicle configurations since Gemini.1101
Confi
ation
II Gemini
IIIB
34B
IIIC
HID
IIIE
34D
IISLV
III Commercial
IV
9/10/96
Table 44. Summa of Titan Vehicle Confi
rations
Descri
Titan II ICBM converted to a man-rated vehicle
Same as Titan II Gemini except stretched stages 1 and 2, and an
inte al Trans
Same as IIIA e
Same as IIIC ex
·Same as 34B with added 5½-segment SRMs. Uses either Transtage
orIUSu
e
Refurbished II ICBM with 10-foot diameter PLF
Same as 34D except stretched stage 2, single or dual carrier,
enhanced liquid-rocket engines, and 13.1-foot diameter PLF. Can
use P AM-D2, Transta e, or TOS u
er sta e
Same as 34D except stretched stages 1 and 2, 7-segment SRM or 3-
segment SRMU, and 16.7-foot diameter PLF. Can use IUS or
Centaur u
er sta e
147
RTI