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Revision B, May 1, 2011

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Engineering Analysis System (EASY) Computer Program for Dynamic Analysis of Aircraft ECS

Includes all amendments and changes through Cancellation Notice , May 2011

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Product Details:

  • Revision: Revision B, May 1, 2011
  • Published Date: May 2011
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 31
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

The Engineering Analysis SYstem (EASY) computer program is summarized in this report. It provides techniques for analysis of steady-state and dynamic (transient) environmental control system (ECS) performance, control system stability, and for synthesis of optimal ECS.

General uses of a transient analysis computer program for ECS design and development, and general features of EASY relative to these uses, are presented. This report summarizes the nine analysis options of EASY, EASY program organization for analyzing ECS, data input to the program and resulting data output, and a discussion of EASY limitations.

Appendices provide general definitions for dynamic analysis, and samples of input and output for EASY.


A generalized computer program for determining transient thermodynamic performance of aircraft ECS, and methods for dynamic analysis of aircraft ECS are discussed in this report.
AIA/NAS Aerospace Standards