SAE ARP1702B-2021 PDF

Scope: This SAE Aerospace Recommended Practice (ARP) identifies and defines a method of measuring those factors affecting installed power available for helicopter powerplants. These factors are installation losses, accessory power extraction, and operational effects. Accurate determination of these factors is vital in the calculation of helicopter performance as described in the RFM. It is intended that the methods presented herein prescribe and define each factor as well as an approach to measuring said factor. Only basic installations of turboshaft engines in helicopters are considered. Although the methods described may apply in principle to other configurations that lead to more complex installation losses, such as an inlet particle separator, inlet barrier filter (with or without a bypass system), or infrared suppressor, specialized or individual techniques may be required in these cases for the determination and definition of engine installation losses.

SAE ARP1702B-2021 history

2021 SAE ARP1702B-2021 Defining and Measuring Factors Affecting Helicopter Turbine Engine Power Available
1998 SAE ARP1702A-1998 Defining and Measuring Factors Affecting Helicopter Turbine Engine Power Available
1998 SAE ARP1702-1998 Defining and Measuring Factors Affecting Helicopter Turbine Engine Power Available
1982 SAE ARP1702-1982 Defining and Measuring Factors Affecting Helicopter Turbine Engine Power Available