![](https://t1.daumcdn.net/cfile/cafe/143315364EDCB0A31E)
- 오일 소모량은 시간당 0.5 quarter 이하이어야 한다.
- 오일의 소모량 계산 방식은 Rolling average 에 의하여 oil consumption rate를 계산한다.
Full open
1) thrust reverser operation 시 50% open
2) surge 시 full
3) N2 70% 이하시 full
- rpm이 저속인 경우 stall margin 을 주기 위하여 2.5 bleed v/v full open
![](https://t1.daumcdn.net/cfile/cafe/175FCD354EDCB0CF29)
![](https://t1.daumcdn.net/cfile/cafe/175D0D354EDCB0E32A)
< SVA scheduling > stator vane actuator
1) start ~ N2 15% 까지 open
2) N2 15% ~ N2 40% : close
3) N2 40% 이상 : modulate with N1, N2 and T2
4) High Power : full open
5) surge : close few degree
![](https://t1.daumcdn.net/cfile/cafe/1473583A4EDCB10117)
![](https://t1.daumcdn.net/cfile/cafe/1570CF3B4EDCB12F3A)
◈ EPR rating
- EPR control : rated control
◈ Engine performance monitoring
<EPMS>
<Engine Inspection >
- Engine cowl inspection
- Drain inspection
- FWD Engine mount inspection
- AFT Engine mount inspection
< Engine cowl inspection >
- intake section
- cowl section
- exhaust section
- thrust reverse section
Cowl : nacelle 에서 Engine 을 뺀 부분, 공기의 저항을 줄게 한다.
Fan cowl을 열면 EEC가 보인다.
< Intake section >
- fan blade
- spinner cone
- rub strip condition
- inner barrel woren wire
- cowl lip
- unwanted objects
◈ Cowl section
- Access door
- pressure relief door : pneumatic duct에 의하여 엔진 내부의 압력 감소
- drain mast leakage
< Aero dynamic smoothness >
Smoothness condition
Skin smoothness
![](https://t1.daumcdn.net/cfile/cafe/191749374EDCB16A30)
Gap
![](https://t1.daumcdn.net/cfile/cafe/170AFD3B4EDCB18610)
Flushness ( Aero dynamic smoothness )
![](https://t1.daumcdn.net/cfile/cafe/206134384EDCB1A817)
◈ 71-11-00 general 201 참조
◈ aero dynamic smoothness 그림
◈ skin smoothness AMM 그림 표
◈ aero dynamic smoothness tolerances 71-11-00 200 에서 표
◈ cowl load sharing (그림)
Cowl load sharing
- purpose
- description & operation
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