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SAE AS4191B
Gas Turbine Engine Performance Presentation for Computer Programs Using Fortran
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STANDARD published on 1.6.2026
The information about the standard:
Designation standards: SAE AS4191B
Publication date standards: 1.6.2026
SKU: NS-1276001
Country: American technical standard
Category: Technical standards SAE
Annotation of standard text SAE AS4191B :
This SAE Aerospace Standard (AS) provides a method for gas turbine engine performance computer programs to be written using Fortran COMMON blocks. If a “function-call application program interface” (API) is to be used, then ARP4868 and ARP5571 are recommended as alternatives to that described in this document.
When it is agreed between the program user and supplier that a particular program shall be supplied in Fortran, this document shall be used in conjunction with AS681 for steady-state and transient programs.
This document also describes how to take advantage of the Fortran CHARACTER storage to extend the information interface between the calling program and the engine subroutine.
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard
Stabilized: Jun 2026 
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