Engine

Overview

The OH-58D Kiowa Warrior is equipped with a single Rolls-Royce Allison turboshaft engine that powers the rotors through the transmission system. The engine is comprised of a two-stage gas producer turbine and a two-stage power turbine assembly. It is air-cooled and provides power to the aircraft via the AC and DC generators and the PMA.

Controls and Switches

Throttle

A twist grip throttle is available on the Pilot and Copilot Collectives.

The throttle regulates fuel flow to the engine via the Hydromechanical Unit (HMU) when the FADEC is in Manual mode or in Automatic mode and the throttle is below 65%.

The throttle includes a stop at the IDLE position to prevent accidental moving of the throttle to the OFF position.

The Idle Release Button allows the throttle to be rotated below the IDLE position.