Rocket-based combined cycle

The RBCC, or rocket-based combined cycle propulsion system, was one of the two types of propulsion systems that may have been tested in the Boeing X-43 experimental aircraft. The RBCC, or strutjet as it is sometimes called, is a combination propulsion system that consists of a ramjet, scramjet, and ducted rocket, where all three systems use a shared flow path.^[1]

A TBCC, or turbine-based combined cycle propulsion system, is a turbine engine combined with a ramjet and scramjet.^[2]

A TRCC, or turbo rocket combined cycle propulsion system, is another combination propulsion system that combines an afterburning turbine engine with a RBCC propulsion system.^[3]

• SABRE (Synergistic Air Breathing Rocket Engine), a pre-cooled air-breathing rocket/RAM-jet engine based on General Dynamics' exploration of LACE concepts (Liquid Air Cycle Engine) by Reaction Engines, UK.^[4]

• Performance Evaluation of the NASA GTX RBCC Flowpath - Glenn Research Center - NASA
• Parametric Study Conducted of Rocket-Based, Combined-Cycle Nozzles - Glenn Research Center - NASA
• Aerojet Successfully Tests RBCC Single Thruster, Demonstrating Tri-Fluid Rocket Injector Capabilities - SpaceRef
• Hypersonic inlet studies for a small-scale rocket-based combined-cycle engine, Journal of propulsion and power, 2007, vol. 23, no6, pp. 1160–1167, AIAA.
• Rocket-Based Combined-Cycle Engine (RBCC): Ramrocket, University of Toronto, High-Speed Vehicle Propulsion Systems Group.

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