CFDRC has developed an innovative engine concept known as the Air Turbo Rocket (ATR) for use in a wide variety of high-speed propulsion applications, and particularly for use in tactical missile systems. The ATR is an advanced airbreathing propulsion engine combining both rocket and turbojet technologies. This combination produces a hybrid engine cycle with performance advantages for both engine families.

The ATR uses a Gas Generator (GG) cycle to develop a high-pressure, fuel-rich gas that drives a turbine. The turbine, in turn, drives a compressor that compresses an incoming airflow. The fuel-rich turbine drive gas is mixed with the compressed air flow and is burned in the combustor. The products of combustion are expulsed through the nozzle to produce thrust.

The ATR can use either liquid propellants or, for tactical missle applications, a solid propellant gas generator. The photos illustrate the basic engine configuration for missile application, which features a 6-inch mixed flow compressor. The engine is capable of producing nearly 800 lb of thrust at sea level/static conditions. This basic configuration can also be applied to other size applications.

CFDRC has necessary expertise to adapt and further develop ATR engines for specific applications. Please contact us for more information or a discussion on your specific needs.