1. T700 ENGINE

2. T700 ENGINE – LEFT HAND SIDE
ACTUATOR/CRANKSHAFT ASSEMBLY FOR VARIABLE GEOMETRY SYSTEM
AISBV
Actuates automatically to provide bleed functions at approx 88-92% Ng or 30% Tq
Will open below 88-92% Ng and close above
IPS
THERMO-COUPLE HARNESS (TGT)
FUEL INJECTORS(12)
IGNITORS(2)
FRONT
Eng Inlet
Anti Ice Port
Eng Anti-Ice
ECU:
Np Governing to maintain constant Power Turbine and Rotor RPM
Load Share Comparator(keeps tq within 5% by adjust low eng Np up to 3%
TGT Limit Amplifier(limits TGT to deg), inop during Eng Start, Lockout, Compressor Stall and Alternator Failure
Tq Motor Amplifier – actuates Tq Motor in HMU to bias metering valve and also receives feedback signal from Linear Variable Differential Transducer in HMU
Np Overspeed Switch to actuate Overspeed Solenoid – backup power from AC Primary Bus
History Recorder – records TGT and Ng and is used to track life of GG and IPS (backup power from AC Primary Bus)
Conditioning and Transfer to cockpit of Tq and Np Signals.
Np Reference for Np Trim Switch % with Pilot Side having authority
Np SENSOR

3. T700 ENGINE – FRONT VIEW RIGHT LEFT OIL PUMP OIL FILTER
6 Scavenge Elements
1 Pressure Element
OIL FILTER BYPASS SWITCH ( >80 PSI)
OIL FILTER
*44-60PSI filter button pops
60-80PSI = light in cockpit
>80PSI will actually bypass
* Oil Filter Impending Bypass button deactivated below 38 deg)
OIL TEMP/ PRESSURE SENSE (NOT VISIBLE)
Pressure Light on at 20 PSI
Temp Light on at 150 deg C
COLD OIL RELIEF
Filter Cooler
CHIP DETECTOR (OIL)
- no Fuzz burn
4. OIL COOLER
ALTERNATOR
-1 Winding for Ng Signal
1 Winding for ECU Power
1 Winding for Engine Ignition
FUEL FILTER BYPASS SWITCH (18-22 PSI)
HISTORY DATA RECORDER
Records TGT and Ng.
Backup power from AC Primary Bus
1. ENG DRIVEN FUEL PUMP(45-90 PSI)
2. FUEL FILTER
GREEN – Engine to airframe interface
BLUE – Np Overspeed and Tq Indication systems
YELLOW – Engine Electrical Functions
BLACK – Engine Ignition
5TH STAGE AIR FOR ENG ANTI - ICE
SWIRL FRAME
-Initial Stage of air purification
RIGHT
LEFT
ENGINE FUEL FLOW
1 Eng Driven Fuel Pump
2 Fuel Filter
3 HMU(next page)
4 Liquid to Liquid Oil Cooler
5 POU(next page)
T700 ENGINE – FRONT VIEW

4. T700 ENGINE – REAR VIEW IPS 3. HMU PNEUMATIC STARTER 5. POU PAS LDS
Swirl Frame on eng inlet directs contaminated air to outside of eng inlet. 85% of inlet air travels direct to compressor. Other 15%(dirty) is directed to IPS.
Use centrifugal force to separate heavy, contaminated particles. Dirty Air dumped overboard.
Mechanically driven by AGB
Not effective at low Ng or on Sheet Ice Shed from Windshield due to Ady Qualities of the ice.
3. HMU
Pumps Fuel via high pressure Vane Pump( PSI)
Meters Fuel via PAS, LDS and ECU. ECU inputs actioned by Tq Motor inside HMU)
Controls VG and VIGV’s via Actuator Shaft
Controls AISBV via Actuator Shaft
Limits Accel and Decel of engine to prevent Compressor Stall/Flameout
Controls Vapor Vent for Manual Fuel Prime
Allows PAS over-ride by mechanically passing all Tq Motor Inputs when PCL advanced full forward ie ECU Lockout
PNEUMATIC STARTER
-30,000 rpm at max Ng
-Driven by APU, Other Engine or Ext Source.
- Eng Start Valves air actuated, elec controlled
5. POU
Meters Start Fuel (outlet to Start Fuel Manifold and 2 primer nozzles)
Meters Main Fuel Flow(outlet to main fuel manifold and 12 injectors)
Purges(via P3 air) Start, Main fuel manifolds as well as injectors and primers(outlet overboard)
On command from ECU limits fuel flow to prevent Np Overspeed(106+/-1%)
PAS
Sets max pwr avail sched.
Set max pwr limits that may never be exceeded by Collective.
LDS
Adjust Load Demand schedule.
Adjusts fuel flow simultaneously with Coll
TQ and O/S SENSOR
-sends signal to ECU for conditioning then to SDC and cockpit
-O/S signal used by ECU to adjust POU
Np SENSOR
-sends signal to ECU for conditioning then to SDC and cockpit
LEFT
RIGHT
T700 ENGINE – REAR VIEW

5. T700 ENGINE(1546 SHP) – RIGHT HAND SIDE
TGT (T4.5) Thermocouples(7)
0-775 Deg C Normal
Deg 30 min Limit
850 deg – Start Abort
850 – 886 deg 12 Sec Limit
Centrifugal Compressor
Single Stage - 5th Stage Air(P3)
air for AISBV
air for Eng Inlet Anti Ice
Air for Pneumatic Manifold(X-bleed Start)
Air for purging
Air for Cockpit Heat and ERFS
Pneumatic Starter
for X-bleed start must have min 90%Ng, 100%Np and Eng Anti Ice Light Off.
At least 60 sec b/n each start cycle
15 deg C and below
2 consecutive start followed by 3 min rest then 2 addn starts followed by 30 mins
Above 15 deg C
-2 consecutive start cycles followed by 30 min rest
COMBUSTION LINER
12 FUEL INJECTORS
2 PRIMER NOZZLES
2 IGNITORS
PAS
LDS
FRONT
REAR
TQ Sensor
0 –100% Dual Cont
0 – 110% Single Cont
% Dual 12 Sec Transient
% Single 12 Sec Transient
Np Overspeed Sensor
– 106+/-1%
Np Turbine
Min 91% except idle/transient
95-101% Cont
% Transient
% 12 Sec Transient
(avoid and 60-90%)
-2 STAGE
-100% = 20900RPM
-Uses 25% of combustion energy
NG Turbine
0-99% Cont
99-102% 30 min
% 12 sec
-2 STAGE
(idle 63%) –44700 RPM (100%)
-Uses 75% of combustion energy
Axial Compressor
-5 STAGE
Comp Ratio of Axial Comp 7:1
Comp ratio of both Axial and Centr 17:1
T700 ENGINE(1546 SHP) – RIGHT HAND SIDE