MB-60

Rocketdyne LOx/LH2 rocket engine. Design 2004. Mitsubishi / Boeing joint project for an engine for Delta IV cryogenic upper stages. Expander bleed, pump-fed.

Boeing's Rocketdyne Division (USA) and Mitsubishi Heavy Industries (Japan) had announced on 14 February 2000 their agreement to jointly design and develop the MB-XX family of high-power cryogenic upper-stage engines for Boeing's Delta-4 and Japan's H-2A launch vehicles. In 2005 the MB-XX was being demonstrated on funding from Boeing and Mitsubishi Heavy Industries for potential application to the Vision for Space Exploration launch vehicle or upgrades to today's EELVs.

Engine: 591 kg (1,302 lb).