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Anti-torque rotor for helicopter

An anti-torque, helicopter technology, applied in the field of anti-torque rotors, can solve problems such as complex solutions and maintaining anti-torque rotors

Pending Publication Date: 2022-02-11
LEONARDO SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0035] The solution shown in US-B-9,359,073 is particularly complex and does not allow to maintain the controllability of the torque-resistant rotor in the case of a failure of the second type (i.e. in the case of a rupture of the rolling elements, which separates the inner ring from the rolling elements)

Method used

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  • Anti-torque rotor for helicopter
  • Anti-torque rotor for helicopter
  • Anti-torque rotor for helicopter

Examples

Experimental program
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Embodiment Construction

[0046] refer to figure 1 , reference numeral 1 in particular denotes a helicopter, which essentially comprises:

[0047] - Fuselage 2;

[0048] - one or more turbines 5;

[0049] - the main rotor 3, located on top of the fuselage 2 and rotatable about the axis A; and

[0050] - Torsion-resistant rotor 4 located at the rear end of fuselage 2 and rotatable about its own axis transverse to axis A.

[0051] Helicopter 1 also includes a transmission unit 11 that transmits power from turbine 5 to main rotor 3 .

[0052] Transmission unit 11 comprises again:

[0053] - the gear train 12, which transmits the power from the turbine 5 to the rotor 3; and

[0054] - The shaft 13 which transmits the power from the gear train 12 to the rotor 4 .

[0055] In known manner, the rotor 3 is adapted to provide a steerable thrust enabling the helicopter 1 to take off and fly forward.

[0056] Rotor 4 generates thrust, which generates counter torque on fuselage 2 .

[0057] This counter to...

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Abstract

An anti-torque rotor (4, 4') is described that comprises: a mast (6) rotatable about a first axis (A); a plurality of blades (8) extending along respective second axes (B); a control element (16) sliding along the first axis (A) with respect to the mast (6), integrally rotatable with said mast (6), and connected to said blades (8); a control rod (10) sliding axially along first axis (A) and angularly fixed with respect to said first axis (A); a connection element (17) interposed between the control rod (10) and the control element (16), sliding along the first axis (A) integrally with the control rod (10), and configured to enable the relative rotation of said control element (16) with respect to the control rod (10) about the first axis (A); and a transmission unit (45) available in an active configuration or an inactive configuration; the transmission unit (45), in turn, comprises: an annular ridge (61) axially and angularly integral with the control rod (10) and radially projecting from the control rod (10); and a seat (64) engaged by the ridge (61) and angularly integral with the control element (16).

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority from European Patent Application No. 19180445.9 filed on June 17, 2019, the entire disclosure content of which is incorporated herein by reference. technical field [0003] The invention relates to a torque-resistant rotor for a helicopter. Background technique [0004] The known helicopter basically comprises a fuselage, a main rotor located on top of the fuselage and rotatable about its own axis, and a torque-resistant rotor located at the rear end of the fuselage. [0005] Helicopters are also known to comprise one or more power units, for example turbines, and a transmission unit interposed between the turbines and the main rotor and adapted to transmit power from the turbines to the main rotor. [0006] In more detail, the anti-torque rotor basically includes: [0007] - a main shaft rotatable about a first axis; [0008] - a hub rotatable about a first axis; and [0009...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/78B64C27/82B64C27/12
CPCB64C27/78B64C27/82B64C27/12
Inventor 米凯莱·德利·保利法比奥·南诺尼罗伯托·万尼
Owner LEONARDO SPA
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