Family: Winged. Country: Germany. Status: Study 1985. Comments: Proposed two stage to orbit vehicle. Air-breathing hypersonic first stage and delta wing second stage. Liftoff Thrust: 458,870 kgf. Total Mass: 366,000 kg. Core Diameter: 14.0 m. Total Length: 101.0 m. Flyaway Unit Cost $: 28.00 million. in 1985 unit dollars.
Stage Number: 1. 1 x Sanger II-1Gross Mass: 254,000 kg. Empty Mass: 156,000 kg. Thrust (vac): 152,957 kgf. Isp: 1,200 sec. Burn time: 6,565 sec. Isp(sl): 3,600 sec. Diameter: 14.0 m. Span: 41.4 m. Length: 84.5 m. Propellants: Air/LH2. No Engines: 6. Co-axial turboramjet
Stage Number: 2. 1 x Sanger II-2Gross Mass: 112,000 kg. Empty Mass: 32,600 kg. Thrust (vac): 130,524 kgf. Isp: 490 sec. Burn time: 298 sec. Isp(sl): 409 sec. Diameter: 5.5 m. Span: 15.6 m. Length: 27.6 m. Propellants: Lox/LH2. No Engines: 1. ATCRE