公开(公告)号：WO2021260459A1

公开(公告)日：2021-12-30

申请号：PCT/IB2021/054604

申请日：2021-05-26

Applicant: LEONARDO S.P.A. ,  POLITECNICO DI MILANO

Inventor： BOTTASSO, Luigi ,  POGGI, Stefano ,  WOODY, Phil ,  LOSI, Fabrizio ,  NAVA, Alessandro ,  SARTORI, Sergio ,  SIMONETTA, Roberto ,  AIROLDI, Alessandro ,  BOIOCCHI, Matteo

IPC: B64C27/12 ,  F16D3/70 ,  F16D21/02 ,  F16D3/62 ,  F16D3/72 ,  F16D3/74 ,  F16D3/50 ,  B64C27/22 ,  B64C29/0033 ,  F16D3/725

Abstract: A rotor (8, 8', 106''', 106'''', 106''''', 106'''''') for an aircraft (1, 100) is described, comprising an input shaft (10, 108) rotatable around a first axis (C, I); an output member (15, 112) rotatable around a second axis (D, J); a coupling element (20, 20', 20'', 20''') functionally interposed between the input shaft (10, 108) and the output member (15, 112) and adapted to transmit the motion from the input shaft (10, 108) to the output member (15, 112); the coupling element (20, 20', 20'', 20''') is configured to allow, in use, a fixed or variable inclination between the respective first and second axes (C, I, D, J); the coupling element (20, 20', 20'', 20''') comprises at least a first corrugated element (21, 22, 25, 120''', 121''', 120'''', 121'''', 122'''') made of an elastically deformable material; the first corrugated element (21, 22, 25; 120''', 121'''; 120'''', 121'''', 122'''') allows the inclination through elastic deformation.

公开(公告)号：WO2021260460A1

公开(公告)日：2021-12-30

申请号：PCT/IB2021/054606

申请日：2021-05-26

Applicant: LEONARDO S.P.A. ,  POLITECNICO DI MILANO

Inventor： BOTTASSO, Luigi ,  LOSI, Fabrizio ,  NAVA, Alessandro ,  SARTORI, Sergio ,  SIMONETTA, Roberto ,  AIROLDI, Alessandro ,  BOIOCCHI, Matteo

IPC: B64C27/12 ,  B64C27/82 ,  B64C27/14 ,  F16D3/72 ,  F16D3/74 ,  F16D2003/745

Abstract: A helicopter (1) is described comprising a motor member (3) comprising an output shaft (12) and a first stator (11, 29) rotatably supporting the output shaft (12) around a first axis (C); a main rotor (4) adapted to provide the lift necessary for the support and the thrust necessary for the movement of the helicopter (1); a transmission (7) interposed between the motor member (3) and the main rotor (4); the transmission (7) comprises, in turn, an input shaft (21) rotatable around a second axis (D) and a second stator (20, 30) rotatably supporting the input shaft (21) around the second axis (D); the helicopter (1) also comprises a joint (35) interposed between the first and second stator (11, 29; 20, 30), angularly fixed with respect to the first axis (C), and configured to allow an inclination between the first and second stator (11, 29; 20, 30) in a plane parallel to said first axis (C); the joint (35) comprises a first corrugated element (36) made of an elastically deformable material, interposed between said first and second stator (11, 29; 20, 30), and adapted to allow the inclination through elastic deformation.

公开(公告)号：WO2004106769A1

公开(公告)日：2004-12-09

申请号：PCT/EP2004/005805

申请日：2004-05-28

Applicant: POLITECNICO DI MILANO ,  AIROLDI, Alessandro ,  GERARDUS, Janszen ,  BERGAMELLI, Carlo ,  SANVITO, Massimiliano

Inventor： AIROLDI, Alessandro ,  GERARDUS, Janszen ,  BERGAMELLI, Carlo ,  SANVITO, Massimiliano

IPC: F16F7/12

CPC classification number: F16F7/123 ,  B64C25/58 ,  B64D25/00

Abstract: The present invention refers to an apparatus for absorbing energy attenuating a force caused by an impact. In particular it refers to a triggering system for the plastic collapse of a metal structural element, particularly suitable for attenuating forces generated by high-velocity impacts, such as in the case of aircraft accidents. In one embodiment the triggering system for the plastic collapse of a metal structural element comprises: an elongated tubular element (11); a fixed ring (1) having a plurality of wedge-shaped flanges (3) associated to said elongated tubular element; a mobile element (2) sliding in the direction of said elongated tubular element and associated with said fixed ring; said mobile element, in response to its movement in the direction of said wedge-shaped flanges, interacts with said wedge-shaped flanges which in turn interact with said elongated tubular element so as to trigger a collapse of said elongated tubular element.

Abstract translation: 本发明涉及一种用于吸收能量的装置，该能量减弱由冲击引起的力。 特别地，它是指用于金属结构元件的塑性塌陷的触发系统，特别适合于衰减由高速冲击产生的力，例如在飞机事故的情况下。 在一个实施例中，用于金属结构元件的塑性塌陷的触发系统包括：细长管状元件（11）; 固定环（1），其具有与所述细长管状元件相关联的多个楔形凸缘（3）; 移动元件（2）沿所述细长管状元件的方向滑动并与所述固定环相关联; 所述可移动元件响应于其在所述楔形凸缘的方向上的移动而与所述楔形凸缘相互作用，所述楔形凸缘又与所述细长管状元件相互作用，从而触发所述细长管状元件的塌陷。