SOLOY TURBINE PAC
SECTION 7
POHS CESSNA U/TU 206G
AIRPLANE & SYSTEMS
DESCRIPTION
7-12
F.A.A. Approved
October 4, 2005
SHOULDER HARNESSES
– No Change
INTEGRATED SEAT BELT/SHOULDER HARNESSES WITH
INERTIA REELS
– No Change
ENTRANCE DOORS AND CABIN WINDOWS
– No
Change
CONTROL LOCKS
– No Change
ENGINE
The SOLOY TURBINE PAC powerplant consists of a lightweight
ROLLS ROYCE Model 250-C20S free turboshaft engine and a SOLOY
propeller reduction gearbox. The engine utilizes two independent
turbine sections; one driving a compressor in the gas generator
section, and the second driving a reduction gearing for the Turbine Pac
driveshaft that is further reduced by the SOLOY reduction gearing for
the propeller.
Inlet air enters the engine through a plenum chamber formed around
the compressor inlet bellmouth where it is directed to the compressor.
The compressor consists of six axial compressor stages and one
centrifugal stage, assembled as an integral unit. It provides a
compression ratio of 7.0:1.
The compressed air is discharged through the scroll type diffuser into
two external ducts, which convey the air to the combustion section.
Air enters the single combustion liner through holes in the liner dome
and skin. This air is mixed with fuel sprayed from the fuel nozzle to
support combustion. The combustion gases move out of the
combustion liner to the first stage gas producer turbine nozzle.
The gas producer and power turbines are mounted between the
combustion section and the power and accessories gearbox. The two-
stage gas producer turbine drives the compressor and accessories
gear train. The two-stage power turbine furnishes the output power of
the engine through the power gear train. The expanded gas
discharges through the twin ducts of the exhaust collector in a
downward direction.
UNCONTROLLED
COPY