Legendre Philippe M. R. (Grans FRX) Manfredotti Thomas P. (Eguilles FRX) Herpin Gilles D. (Vitrolles FRX)
출원인 / 주소
Eurocopter France (Marignane Cedex FRX 03)
인용정보
피인용 횟수 :
4인용 특허 :
0
초록▼
For each blade, the cuff which is rigid in torsion, surrounding the corresponding rotor attachment twistable arm, bears two opposed pitch levers each articulated to one respectively of two intermediate connecting rods which are moreover articulated to one and the same transmission lever on either si
For each blade, the cuff which is rigid in torsion, surrounding the corresponding rotor attachment twistable arm, bears two opposed pitch levers each articulated to one respectively of two intermediate connecting rods which are moreover articulated to one and the same transmission lever on either side of a pivoting link by means of which this lever pivots on a pivot secured to the rotor mast. The transmission lever is additionally articulated to the pitch-control rod at a point which is offset with respect to its pivoting link. A crossmember is articulated to the connecting rods and interacts with an assembly having a drag damper, this assembly itself being articulated to a fixed point secured in terms of rotation to the rotor mast.
대표청구항▼
A pitch-control device for a rotor of the hingeless type, and in which: a rotor mast is driven in rotation about an axis of the rotor, a hub is secured in terms of rotation to the mast, at least two blades are each, on the one hand, connected to the hub by a root attachment part comprising at least
A pitch-control device for a rotor of the hingeless type, and in which: a rotor mast is driven in rotation about an axis of the rotor, a hub is secured in terms of rotation to the mast, at least two blades are each, on the one hand, connected to the hub by a root attachment part comprising at least one arm that is twistable about a longitudinal pitch-change axis of the blade, and, on the other hand, fitted with a cuff which is rigid in terms of torsion, surrounding the twistable arm, and of an outer radial part of the cuff, with respect to the axis of the rotor, is secured in terms of torsion to the blade and to the arm twistable about the pitch axis, whereas an inner radial part of the cuff surrounds the twistable arm, without contact, and has two pitch levers which are fixed, in the case of one of them, to the leading edge of the cuff and, in a case of the other, to a trailing edge of the cuff, each pitch lever being articulated to one end of one, respectively, of two intermediate connecting rods, the other ends of which are articulated to a transmission lever, on either side of a pivoting link by means of which the transmission lever pivots on a pivot which is secured in terms of rotation to the rotor mast, the transmission lever being connected by an articulation which is offset with respect to the pivoting link to a corresponding pitch-control rod manoeuvred substantially in the direction of the axis of the rotor by an actuating mechanism connected to flight controls actuated by a pilot, and in which, for each blade, a crossmember is located between the two intermediate connecting rods and is articulated to each of the connecting rods between the ends of each connecting rod and the crossmember interacts with an assembly including at least one damper for damping the drag of the corresponding blade, the assembly being articulated to a fixed point secured in terms of rotation to the rotor mast.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허를 인용한 특허 (4)
Schmaling, David N.; Robbins, Michael R.; D'Anna, Frank P., Compact load path swashplate assembly.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.