|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/1N ; 181/213 ; 181/220 ; 181/222|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 22 인용 특허 : 3|
A system is provided for existing three-engine jet aircraft to reduce the noise levels at take-off and landing in order to meet governmental noise regulations. The system is particularly suitable for 727-200 aircraft having three JT8D engines. A hush kit is formed of the modified components for installation in existing airplanes.
A method for quieting jet engine noise produced by an airplane having three jet engines upon take-off and landing, comprising: (a) replacing two outboard-mounted jet engines at the rear of the fuselage with jet engines which produce lower noise and greater thrust; (b) retaining a center fuselage-mounted jet engine, and removing a thrust reverser from the aft position thereof; (c) mounting a forced-air mixer on the center engine at the position from which the thrust reverser was removed, the mixer being adapted to combine cold air passing around the engin...