Aircraft constant-velocity transmission rotor
AssigneeAgusta S.p.A.
InventorVittorio Caramaschi
Life of this patent
Estimating the term…
Abstract
An aircraft rotor having a drive shaft, a number of blades extending substantially radially with respect to the shaft, and a constant-velocity transmission connecting the blades to the shaft; the transmission having a hub supported adjustably about a fixed pole, a drive member integral with the shaft, a driven member integral with the hub, and a number of torque transmitters, each connected to a first attachment, carried by the drive member, and to a second attachment, carried by the driven member, by means of a first hinge and a second hinge respectively; the axes of the first hinges and second hinges defining respective planes on opposite sides of and symmetrical with respect to a bisecting plane coincident, in stationary conditions, with the plane of the hub.
Claims17
An aircraft rotor comprising a drive shaft (2), a number of blades (3) extending substantially radially with respect to the drive shaft (2), and a transmission connecting said blades (3) to said drive shaft (2);
- the transmission comprising a hub (4) supported adjustably about a fixed pole (0), articulating means (35, 36) connecting each of said blades (3) to said hub (4), and torque-transmitting means (6, 7, 11) connecting said drive shaft (2) to said hub (4);
- characterized in that said hub (4) is symmetrical with respect to a plane (α) of its own through said pole (0);
- and in that said torque-transmitting means (6, 7, 11) comprise a drive member (6) rotationally integral with said drive shaft (2), a driven member (7) connected rigidly to said hub (4), and a number of torque transmitters (11), each connected to a first attachment (56) carried by the drive member (6), and to a second attachment (57) carried by the driven member (7), by means of a first hinge (59) and a second hinge (58) respectively;
- said first and second hinges (59, 58) having axes (E, D) lying respectively in a first and a second plane (ε, δ) on opposite sides of and symmetrical with respect to a bisecting plane (β) coincident, in stationary rest conditions, with said plane (α) of said hub (4).
Dependencies are inferred from the claim text.