4. Time Derivative Corrections

This chapter provides the Standard Day corrections for the time rate of change, (i.e., time derivative) for the gas path parameters encountered in Chap. 3. The parameters considered include, Acceleration, Temperature, Pressure, Air Flow, Fuel Flow, Horsepower, Torque, Thrust, Fuel Air Ratio (FAR), and Thrust Specific Fuel Consumption (TSFC). As in the previous chapter, corrections are derived in detail from the definitions, axioms, and assumptions that were proposed in Chap. 2 along with simple thermodynamic relationships relevant to the parameter under consideration. In order to avoid any circular reasoning, parameters are derived in a particular order, wherein only results from already derived parameters are utilized in a given derivation.