The T700 design offers the following maintenance benefits: no special tools required for
module replacement, no critical measurements required for module replacement, no component
replacement at direct support. Any maintenance action requiring special tools is accomplished at depot
level.
10.11.
SCHEDULED MAINTENANCE
The T700-GE-700 engine has been designed to meet the required design life of 5,000 hours.
The T700 is a durably designed engine and does not require frequent scheduled checks or adjustments.
An example of this feature is that the fuel control requires no field adjustments.
10.12.
SUMMARY
The General Electric T700-GE-700 turboshaft engine is presently being developed to power
the Utility Tactical Transport Aircraft System (UTTAS). The engine is an axial-flow free-power turbine
design, rated at 1, 536 shp. The engine is made up of four modules: accessory gearbox, cold section, hot
section, and power turbine.
Mounted on the front of the engine is a centrifugal inlet particle separator to keep foreign
objects from entering the compressor. The compressor has five axial stages and one centrifugal stage.
The annular combustion chamber has 12 vaporizing fuel injectors and two atomizing start-fuel nozzles.
The gas generator turbine and power turbine are two-stage axial flow turbines. An emergency oil system
has been designed to ensure limited engine operation after loss of oil. The oil tank is built into the inlet
separator.
The engine has been designed for improved reliability, easy maintenance, low fuel
consumption, and extended operating life. All field maintenance can be performed without special tools.
The engine can be internally inspected by the borescope method, rather than by engine teardown. The
engine will have a design life of 5,000 hours.
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