The Walter engine was designed to withstand the brutal Russian climate and
their lack of qualified engine mechanics. It was built for extreme conditions and designed to require fewer
overhauls and less maintenance than its competitors. There are no hot section
inspections as you probably know them from other engines.
It is a is a
two-shaft turboprop engine of reverse flow layout. It features two basic parts:
the gas generator and power section. The gas generator consists of a two stage
axial and one stage centrifugal compressor, annular combustor and one stage
accessory gearbox with instruments necessary for engine operation and power
control is situated on the rear part of the compressor air intake casing. An
oil tank is an integral part of the accessory gearbox. The power section is
mounted on the front part of the gas generator. This section
consists of a one stage axial turbine, exhaust system and a two stage
reduction gearbox with torque meter and propeller shaft. The propeller
governor is situated on the reduction gearbox and provides the control of
the hydraulic actuated propeller including the reverse thrust angle
adjustment, commonly termed "Beta".
The engine is equipped with a system of
electronic limiters which protects the engine against overloads or "hot starts".
The engine is modified for installation of an automatic feathering system. For
more information regarding the engine, please visit their factory web site at