Hingeless rotor with intermediate pitch-control rings
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/33
B64C-027/39
출원번호
US-0573781
(1995-12-18)
우선권정보
FR-0015472 (1994-12-22)
발명자
/ 주소
Legendre Philippe Maurice Rene,FRX
Manfredotti Thomas Pierre Louis,FRX
Antomarchi Philippe Maurice Paul,FRX
출원인 / 주소
Eurocopter France, FRX
대리인 / 주소
Henderson & Sturm
인용정보
피인용 횟수 :
4인용 특허 :
8
초록▼
A hingeless rotor including a rotor mast driven in rotation about an axis of the rotor, a hub secured in terms of rotation to the mast, and at least two blades, each of which is, firstly, joined to the hub by a root attachment part comprising at least one arm which can twist about a longitudinal pit
A hingeless rotor including a rotor mast driven in rotation about an axis of the rotor, a hub secured in terms of rotation to the mast, and at least two blades, each of which is, firstly, joined to the hub by a root attachment part comprising at least one arm which can twist about a longitudinal pitch-change axis of the blade and, secondly, equipped with a cuff which is rigid in torsion, surrounding the at least one twistable arm, and the radially external part of the cuff, with respect to the rotor axis is secured in terms of torsion to the blade and to the twistable arm about the pitch-change axis, while the radially internal part of the cuff surrounds, without contact, the at least one twistable arm and exhibits a pitch lever projecting towards the outside of the cuff and joined to a pitch-control rod, wherein, for each blade, an intermediate pitch-control ring which is rigid in terms of torsion about the corresponding pitch-change axis, and which surrounds the corresponding at least one twistable arm is arranged substantially between the hub and the radially internal part of the corresponding cuff, the ring being joined to the hub and the radially internal part of the corresponding hub by two ball joints, the first one of which articulates the ring to the hub and the second one of which articulates the ring to the cuff.
대표청구항▼
[ We claim:] [1.] A hingeless rotor comprising:a rotor mast driven in rotation about an axis of the rotor,a hub secured in terms of rotation to the mast,at least two blades, each of which is, firstly, joined to the hub by a root attachment part comprising at least one arm which can twist about a lon
[ We claim:] [1.] A hingeless rotor comprising:a rotor mast driven in rotation about an axis of the rotor,a hub secured in terms of rotation to the mast,at least two blades, each of which is, firstly, joined to the hub by a root attachment part comprising at least one arm which can twist about a longitudinal pitch-change axis of the blade and, secondly, equipped with a cuff which is rigid in torsion, surrounding the at least one twistable arm, and the radially external part of the cuff, with respect to the rotor axis is secured in terms of torsion to the blade and to the twistable arm about the pitch-change axis, while the radially internal part of the cuff surrounds, without contact, the at least one twistable arm and exhibits a pitch lever projecting towards the outside of the cuff and joined to a pitch-control rod, wherein, for each blade, an intermediate pitch-control ring which is rigid in terms of torsion about the corresponding pitch-change axis, and which surrounds the corresponding at least one twistable arm is arranged substantially between the hub and the radially internal part of the corresponding cuff, the ring being joined to the hub and the radially internal part of the corresponding hub by two ball joints, the first one of which articulates the ring to the hub and the second one of which articulates the ring to the cuff.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Lovera Bruno (Cardano ITX) Pancotti Santino (Gallarate ITX) Pariani Emilio (Cardano ITX) Virtuani Giuseppe (Milan ITX), Articulated rotor for helicopters.
Noehren William L. (Huntington CT) Ferris Donald L. (Newtown CT) Ogle Peter C. (Woodbridge CT), Cross-beam helicopter rotor with readily replaceable snubber.
Byrnes Francis E. (White Plains NY) Krauss Timothy A. (Harwinton CT) Schmaling David N. (Oxford CT), Flexbeam for a helicopter bearingless main rotor assembly.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.