Page 2-8
Pilot’s Operating Manual
Original Issue: Feb, 2002
Sub-section 2
ENGINES
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
OPERATION
When the engine is operating, the single-stage fan draws air through the nacelle inlet duct. The outer
diameter of the fan accelerates a moderately large air mass at a low velocity into the full-length bypass
duct. At the same time, the inner diameter of the fan accelerates an air mass into the engine core.
The pressure of this air is increased by the LP compressor and directed to the HP compressor where
the air pressure is further increased and ducted aft to the combustor. A precise amount of this air enters
the reverse-flow combustor where fuel is injected by twelve spray nozzles.
The mixture is initially ignited by two igniter plugs and expanded through the turbine. The HP turbine
extracts enough energy to drive the HP compressor and the transfer and accessory gears. The LP
turbine extracts enough energy to drive the LP compressor, the planetary gear and the fan.
The remaining gas energy is accelerated aft through the exhaust pipe and joins the fan airflow from the
bypass duct to provide the total direct thrust.
Figure 2
Gas Flow During Engine Operation
Содержание Hawker 800XP
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