American heavy-lift orbital launch vehicle. The Zenith Star space-based chemical laser missile defence weapon required a launch vehicle capable of placing a 45,000 kg payload into low earth orbit. Martin and Aerojet turned to their work 20 years earlier on advanced Titans for the MOL program. These earlier studies were combined with new concepts for tank construction and materials. The Martin Barbarian was a 4.57 m diameter Titan vehicle (instead of the customary 3.05 m) with four LR-87 engines on the first stage, and a single LR-87 engine on the second stage.
Another variant reportedly consisted of 5 Titan 4 SRM's, clustered around a 5.8 m diameter core. This core would use 5 LR-87 engines, with tankage fabricated on Shuttle external tank tooling. The third stage would utilize a single LR87 engine. Expected cost of the Barbarian per launch was expected to be $ 400-500 million.
A mock-up of the vehicle was prepared for a major television opportunity with President Reagan. The President spoke in front of a full scale model of the Zenith Star spacecraft (4.57 m in diameter, and 24 m long), and beside that, the full scale model of the required Barbarian launch vehicle. That model was a refurbished version of a Manned Orbiting Laboratory (MOL) metal mock-up made in the 1960s. When the MOL program was cancelled, the useless bit of tankage had been sold as scrap to a Colorado farmer. It had to be purchased back for the Zenith Star demonstration. It required quite a bit of cleaning and repainting since it had been lived-in for a while by itinerant travellers.
Barbarian, like Zenith Star, was quickly forgotten with the collapse of the Soviet Union and the Star Wars project itself. Key people on the Martin Barbarian included Wally Dinsmore, Roy Jones, and Howard Williams.
LEO Payload: 45,400 kg (100,000 lb) to a 300 km orbit at 28.00 degrees. Launch Price $: 500.000 million in 1987 dollars.
Stage Data - Barbarian MM
- Stage 0. 5 x Titan UA1207. Gross Mass: 319,330 kg (704,000 lb). Empty Mass: 51,230 kg (112,940 lb). Thrust (vac): 7,116.999 kN (1,599,965 lbf). Isp: 272 sec. Burn time: 120 sec. Isp(sl): 245 sec. Diameter: 3.05 m (10.00 ft). Span: 3.05 m (10.00 ft). Length: 34.14 m (112.00 ft). Propellants: Solid. No Engines: 1. Engine: UA1207. Status: In Production.
- Stage 1. 1 x Barbarian MM-1. Gross Mass: 400,000 kg (880,000 lb). Empty Mass: 25,000 kg (55,000 lb). Thrust (vac): 6,080.000 kN (1,366,830 lbf). Isp: 302 sec. Burn time: 175 sec. Isp(sl): 250 sec. Diameter: 3.05 m (10.00 ft). Span: 5.80 m (19.00 ft). Length: 20.00 m (65.00 ft). Propellants: N2O4/Aerozine-50. No Engines: 5. Engine: LR-87-11. Status: Study. Comments: All values roughly estimated based on number of engines and diameter given.
- Stage 2. 1 x Barbarian MM-2. Gross Mass: 80,000 kg (176,000 lb). Empty Mass: 6,000 kg (13,200 lb). Thrust (vac): 1,214.000 kN (272,918 lbf). Isp: 302 sec. Burn time: 175 sec. Isp(sl): 250 sec. Diameter: 3.05 m (10.00 ft). Span: 5.80 m (19.00 ft). Length: 6.00 m (19.60 ft). Propellants: N2O4/Aerozine-50. No Engines: 1. Engine: LR-87-11. Status: Study. Comments: All values roughly estimated based on number of engines and diameter given.
Status: Study 1986.
More... - Chronology...
Gross mass: 2,100,000 kg (4,600,000 lb).
Payload: 45,400 kg (100,000 lb).
Height: 50.00 m (164.00 ft).
Diameter: 4.57 m (14.99 ft).
Thrust: 32,052.66 kN (7,205,725 lbf).
Apogee: 300 km (180 mi).
Zenith Star American military anti-satellite system. Study 1987. In 1987, the Zenith Star prototype space combat satellite prototype, using the Alpha laser, was announced by President Bush. The launch vehicle would be the Barbarian. Zenith Star weighed 39. More...
LR87-11 Aerojet N2O4/Aerozine-50 rocket engine. 1218.8 kN. Out of production. Isp=302s. Powered Titan 3 and 4 first stages. Replaced the -9 model, first flown 1968. First flight 1964. More...
UA1207 CSD solid rocket engine. 7116.9 kN. Isp=272s. First flight 1989. More...
Associated Manufacturers and Agencies
Martin American manufacturer of rockets, spacecraft, and rocket engines. Martin Marietta Astronautics Group (1956), Denver, CO, USA. More...
"SDI Considers Cluster Booster to Launch Zenith Star Spacecraft", Aviation Week and Space Technology, 1987-11-30, page 20.
Dorman, Bernie, et. al., Aerojet: The Creative Company, Stuart F Cooper Company, Los Angeles, 1995..
Barbarian MM-1 N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 400,000/25,000 kg. Thrust 6,080.00 kN. Vacuum specific impulse 302 seconds. All values roughly estimated based on number of engines and diameter given. More...
Barbarian MM-2 N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 80,000/6,000 kg. Thrust 1,214.00 kN. Vacuum specific impulse 302 seconds. All values roughly estimated based on number of engines and diameter given. More...
Titan UA1207 Solid propellant rocket stage. Loaded/empty mass 319,330/51,230 kg. Thrust 7,117.00 kN. Vacuum specific impulse 272 seconds. More...
Home - Browse - Contact
© / Conditions for Use