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2010

Aerospace Engineering

Masters Theses

Air ejector system

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A General Simulation Of An Air Ejector Diffuser System, Derick Thomas Daniel Aug 2010

A General Simulation Of An Air Ejector Diffuser System, Derick Thomas Daniel

Masters Theses

A computer model of a blow-down free-jet hypersonic propulsion test facility exists to validate facility control systems as well as predict problems with facility operation. One weakness in this computer model is the modeling of an air ejector diffuser system. Two examples of facilities that could use this ejector diffuser model are NASA Langley Research Center's 8-ft High Temp. Tunnel (HTT) and the Aero-Propulsion Test Unit (APTU) located at Arnold Engineering Development Center. Modeling an air ejector diffuser system for a hypersonic propulsion test facility includes modeling three coupled systems. These are the ejector system, the primary free-jet nozzle that …