公开(公告)号：US06663042B2

公开(公告)日：2003-12-16

申请号：US09974720

申请日：2001-10-09

申请人： Michael John Hatrick ,  Joel David Bennett ,  Finbarr McEvoy ,  Hugh Keith Campbell ,  William Edwin Beattie

发明人： Michael John Hatrick ,  Joel David Bennett ,  Finbarr McEvoy ,  Hugh Keith Campbell ,  William Edwin Beattie

IPC分类号： F02K304

CPC分类号： F02K1/72 ,  B64D33/04 ,  F02K1/566 ,  F02K3/04 ,  F05D2240/14

摘要： A thrust reversing arrangement for an aircraft turbofan propulsive power unit includes a flow redirecting structure which has reverse flow enhancing sub-structures comprising: (i) a cavity which is so dimensioned as to generate a back pressure which supports redirection of flow; (ii) a cascade assembly which provides a flow control slot so dimensioned as to optimize reverse thrust for predetermined fan duct flow conditions; (iii) an obstructing duct wall portion having a leading edge so positioned as to form a leakage slot providing controlled leakage of forward flow; (iv) a box structure, the dimensions of which are such as to optimize back pressure in the cavity; and (v) provision for gaseous fluid under static pressure from the fan duct to load the redirecting structure to the inoperative position.