엔진 정비 및 운용(4)

<img src="https://t1.daumcdn.net/cfile/cafe/143315364EDCB0A31E" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="654" border="0" hspace="1" vspace="1" width="654" id="A_143315364EDCB0A31ED275"/> - 오일 소모량은 시간당 0.5 quarter 이하이어야 한다. - 오일의 소모량 계산 방식은 Rolling average 에 의하여 oil consumption rate를 계산한다. <?xml:namespace prefix = v /><v:shapetype id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path><?xml:namespace prefix = o /><o:lock v:ext="edit" aspectratio="t"></o:lock></v:shapetype><v:shape style="Z-INDEX: -1; POSITION: absolute; TEXT-ALIGN: left; MARGIN-TOP: 34.95pt; WIDTH: 256.9pt; HEIGHT: 166.55pt; VISIBILITY: visible; MARGIN-LEFT: 210.85pt; LEFT: 0px; mso-wrap-style: square; mso-wrap-distance-left: 9pt; mso-wrap-distance-top: 0; mso-wrap-distance-right: 9pt; mso-wrap-distance-bottom: 0; mso-position-horizontal: absolute; mso-position-horizontal-relative: text; mso-position-vertical: absolute; mso-position-vertical-relative: text" id=그림_x0020_4 o:spid="_x0000_s1027" type="#_x0000_t75"><v:imagedata src="file:///C:\Users\yang\AppData\Local\Temp\msohtmlclip1\01\clip_image001.emz" o:title="" gain="93623f"></v:imagedata></v:shape> 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 <o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/175FCD354EDCB0CF29" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="288" border="0" hspace="1" vspace="1" width="288" id="A_175FCD354EDCB0CF29416D"/><o:p style="TEXT-ALIGN: center"><img src="https://t1.daumcdn.net/cfile/cafe/175D0D354EDCB0E32A" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="352" border="0" hspace="1" vspace="1" width="352" id="A_175D0D354EDCB0E32A3505"/><o:p style="TEXT-ALIGN: center"> <v:shape style="Z-INDEX: -2; POSITION: absolute; TEXT-ALIGN: left; MARGIN-TOP: -2.7pt; WIDTH: 265.1pt; HEIGHT: 231.6pt; VISIBILITY: visible; MARGIN-LEFT: 221pt; LEFT: 0px; mso-wrap-style: square; mso-wrap-distance-left: 9pt; mso-wrap-distance-top: 0; mso-wrap-distance-right: 9pt; mso-wrap-distance-bottom: 0; mso-position-horizontal: absolute; mso-position-horizontal-relative: text; mso-position-vertical: absolute; mso-position-vertical-relative: text" id=그림_x0020_3 o:spid="_x0000_s1026" type="#_x0000_t75"><v:imagedata src="file:///C:\Users\yang\AppData\Local\Temp\msohtmlclip1\01\clip_image005.emz" o:title="" gain="93623f"></v:imagedata></v:shape>< 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   <img src="https://t1.daumcdn.net/cfile/cafe/1473583A4EDCB10117" class="txc-image" width="288" style="WIDTH: 288px; FLOAT: none; CLEAR: none" actualwidth="246" border="0" hspace="1" vspace="1" height="195" id="A_1473583A4EDCB101178AC9"/> <img src="https://t1.daumcdn.net/cfile/cafe/1570CF3B4EDCB12F3A" class="txc-image" width="387" height="382" style="WIDTH: 387px; FLOAT: none; HEIGHT: 382px; CLEAR: none" actualwidth="357" border="0" hspace="1" vspace="1" id="A_1570CF3B4EDCB12F3A0717"/>     ◈ 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   <img src="https://t1.daumcdn.net/cfile/cafe/191749374EDCB16A30" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="352" border="0" hspace="1" vspace="1" width="352" id="A_191749374EDCB16A302456"/> Gap   <img src="https://t1.daumcdn.net/cfile/cafe/170AFD3B4EDCB18610" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="112" border="0" hspace="1" vspace="1" width="112" id="A_170AFD3B4EDCB18610BE3D"/>   Flushness ( Aero dynamic smoothness )   <img src="https://t1.daumcdn.net/cfile/cafe/206134384EDCB1A817" class="txc-image" style="FLOAT: none; CLEAR: none" actualwidth="256" border="0" hspace="1" vspace="1" width="256" id="A_206134384EDCB1A8177BC5"/> ◈ 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      </o:p></o:p></o:p>