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.
SAE AIR1823A-1996 history
2011SAE AIR1823B-2011 Engineering Analysis System (EASY) Computer Program for Dynamic Analysis of Aircraft ECS
2011SAE AIR1823-2011 ENVIRONMENTAL CONTROL SYSTEM TRANSIENT ANALYSIS COMPUTER PROGRAM (EASY)
2003SAE AIR1823A-2003 Engineering Analysis System (EASY) Computer Program for Dynamic Analysis of Aircraft ECS
1996SAE AIR1823A-1996 (R) Engineering Analysis System (EASY) Computer Program for Dynamic Analysis of Aircraft ECS