publication . Doctoral thesis . 1999

Thrust augmentation for a small turbojet engine

Hackaday, Gary L.;
Open Access English
  • Published: 01 Mar 1999
  • Publisher: Monterey, California. Naval Postgraduate School
Abstract
Approved for public release; distribution is unlimited A Sophia J450 (nine pounds of thrust) gas turbine engine was used first to examine the thrust augmentation generated using an ejector shroud. Experimental results obtained with and without the ejector were compared with performance predicted using an engine code and a one-dimensional ejector analysis. The engine code was revised to incorporate a radial turbine and the correct compressor map. Thrust augmentation of 3-10% was measured and the trends were correctly predicted. Second, an engine shroud was designed and installed around the engine and flow measurements were conducted to determine the entrainment r...
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