|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 5 인용 특허 : 6|
An auxiliary power unit intake duct for an aircraft, comprising an internal straight portion 1a, an internal first bend portion 1b and an internal second bend portion 1c, extending between an air inlet 2 and a plenum entry 3 of the auxiliary power unit, a plurality of acoustic guides vanes 4,5 located in the straight portion 1a of the intake duct 1, extending horizontally between opposite side portions of the straight portion 1a; and a plurality of curved aerodynamic guide vanes 6,7 located in the second bend portion 1c proximate to said plenum inlet ...
The invention claimed is: 1. An auxiliary power unit intake duct with aero-acoustic guide vanes for an aircraft, the intake duct comprising an internal straight portion, an internal first bend portion and an internal second bend portion, said internal portions extending between a duct air inlet and a plenum entry of the auxiliary power unit, the second bend having a first side wall having a first side wall curvature and a second side wall having a second side wall curvature, the second side wall being shorter than the first side wall, the first bend por...