Active standard | Published: 01/06/2026

SAE AS4191B

Gas Turbine Engine Performance Presentation for Computer Programs Using Fortran

Available languages: English

Available design: electronic design (pdf), Print design

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Detail information

Designation: SAE AS4191B

Publication date: 01/06/2026

Pages: 0

Country: American technical standard

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Anotation

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 SAE - Standards Status Definitions