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NNEPEQ - Chemical equilibrium version of the Navy/NASA Engine ProgramThe Navy NASA Engine Program, NNEP, currently is in use at a large number of government agencies, commercial companies and universities. This computer code has been used extensively to calculate the design and off-design (matched) performance of a broad range of turbine engines, ranging from subsonic turboprops to variable cycle engines for supersonic transports. Recently, there has been increased interest in applications for which NNEP was not capable of simulating, namely, high Mach applications, alternate fuels including cryogenics, and cycles such as the gas generator air-turbo-rocker (ATR). In addition, there is interest in cycles employing ejectors such as for military fighters. New engine component models had to be created for incorporation into NNEP, and it was found necessary to include chemical dissociation effects of high temperature gases. The incorporation of these extended capabilities into NNEP is discussed and some of the effects of these changes are illustrated.
Document ID
19890037618
Document Type
Reprint (Version printed in journal)
Authors
Fishbach, L. H. (NASA Lewis Research Center Cleveland, OH, United States)
Gordon, S. (Sanford Gordon and Associates Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: ASME, Transactions, Journal of Engineering for Gas Turbines and Power
Volume: 111
ISSN: 0022-0825
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
ASME PAPER 88-GT-314
Distribution Limits
Public
Copyright
Other