Engine 11D68 detail Credit - © Mark Wade

Other Designations: 11S824; Block D; D-1-e. Class: Tug. Nation: Russia.

Upper stage / space tug - in production. Launched by . Also known as Block D-2; article number 11S824F. Without guidance unit (navigation commands come from payload).

Successor to 11S824M. Used for launch of Lavochkin Mars-bound spacecraft in 1988 and 1996.

Unit Cost $: 4.000 million. Length: 5.50 m (18.00 ft). Basic Diameter: 3.70 m (12.10 ft). Span: 3.70 m (12.10 ft). Mass: 16,900 kg (37,200 lb). Main Engine: RD-58M. Main Engine: 230 kg (500 lb). Main Engine Thrust: 85.020 kN (19,113 lbf). Main Engine Propellants: Lox/Kerosene. Main Engine Propellants: 15,100 kg (33,200 lb). Main Engine Isp: 352 sec.