SAE AS681J

This Aerospace Standard (AS) provides a method for the presentation of gas turbine engine steady-state and transient performance calculated using digital computer programs. It also provides for the presentation of parametric gas turbine data including performance, weight and dimensions by digital computer programs.

This standard is intended to facilitate calculations by the program user without unduly restricting the method of calculation used by the program supplier. This standard is applicable to, but not limited to the following program types: data reduction, steady-state, transient, preliminary design, study, specification, status & parametric programs.