公开(公告)号：US09732678B2

公开(公告)日：2017-08-15

申请号：US14602412

申请日：2015-01-22

申请人： The Boeing Company

发明人： William H. McCabe

IPC分类号： F02C9/30 ,  F02C7/236 ,  F02C9/28 ,  F02C7/22 ,  B64D37/28

CPC分类号： F02C9/30 ,  B64D37/28 ,  F02C7/222 ,  F02C7/236 ,  F02C9/28 ,  F05D2260/80 ,  F05D2270/304

摘要： A system and method for supplementing fuel feed pressure and flow within an aircraft fuel system. The fuel system includes boost and override fuel pumps delivering fuel from the tanks to a fuel manifold, and a jettison fuel pump. The method includes the steps of: (a) sensing whether the aircraft engine is operating near maximum power; (b) upon sensing the condition, operating the jettison fuel pump in fluid interconnection with the override fuel pump to deliver fuel to the fuel manifold; and (c) upon sensing the cessation of the condition, deactivating the jettison fuel pump. The system includes a monitoring circuit signaling when the aircraft engine speed is greater than a predetermined threshold, and a fuel system control circuit operating a jettison fuel pump enable circuit portion in response to the signal while omitting other jettisoning operations. The jettison fuel pump consequently functions as an override fuel pump assist.

公开(公告)号：US20160169121A1

公开(公告)日：2016-06-16

申请号：US14602412

申请日：2015-01-22

申请人： The Boeing Company

发明人： William H. McCabe

IPC分类号： F02C9/30 ,  F02C7/22

CPC分类号： F02C9/30 ,  B64D37/28 ,  F02C7/222 ,  F02C7/236 ,  F02C9/28 ,  F05D2260/80 ,  F05D2270/304

摘要： A system and method for supplementing fuel feed pressure and flow within an aircraft fuel system. The fuel system includes boost and override fuel pumps delivering fuel from the tanks to a fuel manifold, and a jettison fuel pump. The method includes the steps of: (a) sensing whether the aircraft engine is operating near maximum power; (b) upon sensing the condition, operating the jettison fuel pump in fluid interconnection with the override fuel pump to deliver fuel to the fuel manifold; and (c) upon sensing the cessation of the condition, deactivating the jettison fuel pump. The system includes a monitoring circuit signaling when the aircraft engine speed is greater than a predetermined threshold, and a fuel system control circuit operating a jettison fuel pump enable circuit portion in response to the signal while omitting other jettisoning operations. The jettison fuel pump consequently functions as an override fuel pump assist.