Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-07-23

Total Pages: 118

ISBN-13: 9781723448119

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An engine simulation computer code called NNEP89 was written to perform 1-D steady state thermodynamic analysis of turbine engine cycles. By using a very flexible method of input, a set of standard components are connected at execution time to simulate almost any turbine engine configuration that the user could imagine. The code was used to simulate a wide range of engine cycles from turboshafts and turboprops to air turborockets and supersonic cruise variable cycle engines. Off design performance is calculated through the use of component performance maps. A chemical equilibrium model is incorporated to adequately predict chemical dissociation as well as model virtually any fuel. NNEP89 is written in standard FORTRAN77 with clear structured programming and extensive internal documentation. The standard FORTRAN77 programming allows it to be installed onto most mainframe computers and workstations without modification. The NNEP89 code was derived from the Navy/NASA Engine program (NNEP). NNEP89 provides many improvements and enhancements to the original NNEP code and incorporates features which make it easier to use for the novice user. This is a comprehensive user's guide for the NNEP89 code. Plencner, Robert M. and Snyder, Christopher A. Glenn Research Center COMPUTER PROGRAMS; ENGINE DESIGN; THERMODYNAMIC CYCLES; TURBINE ENGINES; USER MANUALS (COMPUTER PROGRAMS); CHEMICAL EQUILIBRIUM; COMPONENT RELIABILITY; ENGINE PARTS; STEADY STATE; THERMODYNAMICS; TURBOSHAFTS; VARIABLE CYCLE ENGINES...

Download or read book The Navy/NASA Engine Program (Nnep89) written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: An engine simulation computer code called NNEP89 was written to perform 1-D steady state thermodynamic analysis of turbine engine cycles. By using a very flexible method of input, a set of standard components are connected at execution time to simulate almost any turbine engine configuration that the user could imagine. The code was used to simulate a wide range of engine cycles from turboshafts and turboprops to air turborockets and supersonic cruise variable cycle engines. Off design performance is calculated through the use of component performance maps. A chemical equilibrium model is incorporated to adequately predict chemical dissociation as well as model virtually any fuel. NNEP89 is written in standard FORTRAN77 with clear structured programming and extensive internal documentation. The standard FORTRAN77 programming allows it to be installed onto most mainframe computers and workstations without modification. The NNEP89 code was derived from the Navy/NASA Engine program (NNEP). NNEP89 provides many improvements and enhancements to the original NNEP code and incorporates features which make it easier to use for the novice user. This is a comprehensive user's guide for the NNEP89 code. Plencner, Robert M. and Snyder, Christopher A. Glenn Research Center COMPUTER PROGRAMS; ENGINE DESIGN; THERMODYNAMIC CYCLES; TURBINE ENGINES; USER MANUALS (COMPUTER PROGRAMS); CHEMICAL EQUILIBRIUM; COMPONENT RELIABILITY; ENGINE PARTS; STEADY STATE; THERMODYNAMICS; TURBOSHAFTS; VARIABLE CYCLE ENGINES...