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HyperSpace claims several advantages for the superconducting electric hybrid TBCC versus a conventional turbine-based design because the turbine core is completely integrated and embedded inside the ramjet/scramjet engines with a common central flow path. The design has the theoretical capability of operating to a much higher takeover Mach number before transitioning from turbine to ram/scramjet mode.
The company estimates the turbine will run up to Mach 5-6 before transitioning to scramjet power, which will be used to operate to Mach 8-plus. “Our turbine is operable at very high Mach numbers because it is shaftless-electric and all the loads of the rotating machinery are carried in the exoskeleton of the engine structure,” Lugg says. “We are operating at rpms and loads that were previously impossible until we came along with this concept.”
The outer casing for the turbine engine also forms the inner casing of the double-walled ram/scramjet ducting. The space between the double walls is used to hold the JP7/8 subsystem for fueling and cooling as well as to provide space for the electromagnetic power systems and controls. The company says the common airflow path through the center of the powerplant eliminates the need for completely separate turbine and ramjet/scramjet engines. “Ours is all one mass flow, so we are saving volume, weight and complexity. Plus, we don’t have the issue of cocooning a hot turbine,” he adds.aviationweek.com...
A concept explored by the power generation industry 50 years ago is being dusted off by NASA as a possible way of enabling jet engines to operate to higher speeds, to power hypersonic vehicles and reusable spaceplanes.
The magnetohydrodynamic (MHD) energy bypass engine would electromagnetically extract energy from air entering the inlet, slowing the flow and allowing the turbine engine to operate to a higher Mach number.
The electricity generated could be used to power aircraft systems or to electromagnetically accelerate the engine's exhaust flow, increasing thrust. One concept developed in Russia, called Ajaxa, was outlined in a paper in 2001 by its authors Claudio Bruno at the University of Rome and Paul Czysz at St Louise University, Missouri.
The company’s commercial designs have most recently focused on a Mach 6.65 airliner concept sized for 200 passengers and a range of 10,600 nm. Provisionally targeted at entry into service in the early 2030s, the design is configured with four 190,000-lb.-thrust commercial derivative Hyscram hybrid turbofan ram/scramjet MHD engines, which share some of the same fundamental design features of the military TBCC concept.
originally posted by: choomsuba
It seems like all this information you put out there should be classified.