free-power turbine. Some features of this engine
provides a mounting place for a fuel manifold
include an integral inlet particle separator and
block, fuel drain, bleed air ports, and igniter
self-contained systems incorporating modular
GAS GENERATOR TURBINE SECTION.--
The two-stage axial flow turbine section drives the
The engine consists of five major sections.
These sections are the inlet, compressor, com-
compressor. It consists of the turbine stator and
bustor, turbine, and exhaust sections.
Power Turbine Section
The power turbine section consists of the
The inlet section includes all the parts forward
exhaust casing assembly, rotor assembly, and
of the compressor. It directs airflow into the
accessory drive system. The power turbine section
compressor and provides a mount for the
may be positioned on the gas generator section
accessory gearbox (AGB). The engine inlet uses
in two different positions (exhaust pointing to the
an integral particle separator (IPS) to prevent
right or left), depending on the engine location.
IPS includes a swirl frame, scroll case, and engine-
driven blower. The 12 fixed-swirl vanes impart
rotation to the airflow. Any particles are thrown
into the collection scroll and dumped overboard
by the blower. See figure 7-8.
The T700-GE-401 is a front-drive turboshaft
engine featuring a single-spool gas generator
section. The engine has a five-stage axial and a
single-stage centrifugal flow compressor. It has
The compressor section increases the mass
airflow delivered to the combustor through a six-
engine also has a two-stage, axial-flow gas
generator turbine and a two-stage, axial-flow,
stage compressor (five axial, one centrifugal). The
Figure 7-8.-Inlet particle separator (IPS) airflow.