|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||416/001; 416/024; 416/098|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 17 인용 특허 : 17|
A multi-element rotor blade includes a main element and an active slat movable relative to the main element. The slat rotates and translates relative to the main element from a base position. The base position provides a compromise between minimum coefficient of drag C D and maximum coefficient of lift C Lmax . In the advancing blade, since the airspeed thereof is significantly greater than the retreating blade, the slat is positively rotated from the base position to minimizes drag at low angles of attack. In the retreating blade, since the airspeed t...
1. A multi-element rotor blade for an aircraft comprising:a main element rotatable about an axis of rotation to define an azimuth angle, said azimuth angle comprising an advancing angle between 0 and 180 degrees and a retreating angle between 180 and 360 degrees; said main element receives a pitch input adjacent a blade root portion; anda slat movable relative to said main element, said slat movable between a first position during said advancing angle and a second position during said retreating angle. 2. The multi-element rotor blade as recited in claim...