Thrust augmentation for a small turbojet engine
By: by Gary A Hackaday
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1999
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 78
Description: 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 rate in the shroud. The engine shroud was the initial step toward designing a turboramjet.
Notes: Thesis advisor(s): Garth V. Hobson.

"March 1999".

Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, March 1999.

Includes bibliographical references (p. 75).

Approved for public release; distribution unlimited.

Also available online.

Mode of access: World Wide Web.

System requirements: Adobe Acrobat Reader 7.0.

US Navy (USN) author.

dk/dk cc:9116 5/20/99.