Engineering Analysis System (EASY) Computer Program for Dynamic Analysis of Aircraft ECS(Cancelled May 2011)

Standard:
Cancelled:
  • 2011-05-25
 
  • HISTORICAL Access the latest revision: AIR1823
Publisher:
  • SAE International
Pages:
31
Scope:

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. 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.

Rationale:

The computer program on which this document is based is quite old. The program in the form that the document is based on, is little used. There is an improved version, but it is proprietary and would be difficult to document. There are other programs being used for ECS transient analysis. It does not seem appropriate to just document one of many available programs. The document should be cancelled.

History:
Standard Published Revision Status
AIR1823 2011-08-10 Latest Reaffirmed
2011-05-25 Historical Canceled
2003-10-31 Historical Reaffirmed
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