Titan 3C7 - Credit: © Mark Wade. 3,843 bytes. 147 x 625 pixels.

Variant of Titan 3C with seven segment solid motors. Proposed by Martin for precise delivery of payloads beyond Titan 3C capacity into geosynch orbit. Never flown.

LEO Payload: 15,800 kg. to: 185 km Orbit. Payload: 4,300 kg. to a: Geosynchronous transfer trajectory. Liftoff Thrust: 1,307,380 kgf. Total Mass: 818,380 kg. Core Diameter: 3.1 m. Total Length: 43.0 m. Launch Price $: 19.00 million. in 1965 price dollars.

• Stage Number: 0. 2 x Titan UA1207 Gross Mass: 319,330 kg. Empty Mass: 51,230 kg. Thrust (vac): 725,732 kgf. Isp: 272 sec. Burn time: 120 sec. Isp(sl): 245 sec. Diameter: 3.1 m. Span: 3.1 m. Length: 34.1 m. Propellants: Solid No Engines: 1. UA1207

• Stage Number: 1. 1 x Titan 3A-1 Gross Mass: 116,573 kg. Empty Mass: 5,443 kg. Thrust (vac): 238,590 kgf. Isp: 302 sec. Burn time: 147 sec. Isp(sl): 250 sec. Diameter: 3.1 m. Span: 3.1 m. Length: 22.3 m. Propellants: N2O4/Aerozine-50 No Engines: 2. LR-87-11

• Stage Number: 2. 1 x Titan 3A-2 Gross Mass: 29,188 kg. Empty Mass: 2,653 kg. Thrust (vac): 46,266 kgf. Isp: 316 sec. Burn time: 205 sec. Isp(sl): 145 sec. Diameter: 3.1 m. Span: 3.1 m. Length: 7.9 m. Propellants: N2O4/Aerozine-50 No Engines: 1. LR-91-11

• Stage Number: 3. 1 x Titan Transtage Stretch Gross Mass: 15,000 kg. Empty Mass: 2,200 kg. Thrust (vac): 7,257 kgf. Isp: 311 sec. Burn time: 520 sec. Isp(sl): 0 sec. Diameter: 3.1 m. Span: 3.1 m. Length: 5.3 m. Propellants: N2O4/Aerozine-50 No Engines: 2. AJ10-138

• 223 - Titan Marketing Brochure, Martin Company, 1967.