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PROPELLER OPERATION AND MALFUNCTIONS BASIC …

1 PROPELLER OPERATION AND MALFUNCTIONS BASIC FAMILIARIZATION FOR FLIGHT CREWS INTRODUCTION The following is BASIC material to help pilots understand how the propellers on turbine engines work, and how they sometimes fail. Some of these failures and MALFUNCTIONS cannot be duplicated well in the simulator, which can cause recognition difficulties when they happen in actual OPERATION . This text is not meant to replace other instructional texts. However, completion of the material can provide pilots with additional understanding of turbopropeller OPERATION and the handling of MALFUNCTIONS . GENERAL PROPELLER PRINCIPLES PROPELLER and engine system designs vary widely. They range from wood propellers on reciprocating engines to fully reversing and feathering constant-speed propellers on turbine engines.

maintain constant propeller RPM, you must adjust the pitch of the propeller blades as you change airspeed and/or engine power. The pitch is adjusted by rotating the whole blade on a bearing in the hub using an actuator that is linked to the control system. When you change the pitch, you change the "bite" that the blades make with the wind.

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www.cast-safety.org

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PROPELLER OPERATION AND MALFUNCTIONS …

www.cast-safety.org

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