|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/01N ; 244/053B ; 244/065 ; 415/119|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 12 인용 특허 : 14|
An apparatus and method for reducing noise within the fuselage of a propeller driven aircraft. In one embodiment the propeller blades are spaced apart and in front of an offset inlet. The inlet provides air to a gas turbine engine powering the propeller, and also to a scavenge duct. The propeller blades and inlet are spaced apart such that during cruise conditions for the aircraft, the trailing edge of the propeller blades are spaced apart from the inlet by more than one-fourth of the chord length of the propeller blades, and less than about the chord le...
[ What is claimed is:] [1.] An apparatus comprising:an aircraft with a wing, said aircraft cruising at an altitude greater than about 20,000 feet above sea level and an airspeed greater than about 250 knots true airspeed;a propeller with a plurality of propeller blades, said propeller being located adjacent said wing, said propeller rotating to provide forward thrust for said aircraft, each said propeller blades having a trailing edge;a gas turbine engine for powering said propeller; andan offset inlet duct for providing air to said gas turbine engine, s...