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公开(公告)号：US12071230B2
公开(公告)日：2024-08-27
申请号：US17424294
申请日：2020-05-26
Applicant: LEONARDO S.P.A.
Inventor： Michele Delli Paoli , Fabio Nannoni , Roberto Vanni
CPC classification number: B64C27/59 , B64C27/82 , B64C2027/8218 , B64C2027/8281
Abstract: An anti-torque rotor is described comprising: a mast rotatable about a first axis; a plurality of blades hinged on the mast and rotatable about respective second axes to vary the respective angles of attack; a control element sliding along the first axis with respect to the mast, rotatable with the mast and connected to the blades to cause the rotation about the second axes; a control mechanism, axially sliding and angularly fixed with respect to the mast; and a connection element interposed between the control mechanism and the control element, sliding integrally with the control mechanism along the mast; the control mechanism comprises a first and a second rod; the rotor comprises a coupling, which is configured to enable/prevent rotation of the second rod with respect to the first rod when the torque exerted by the first connection element on the second rod about the first axis is greater/less than a threshold value in the event of failure of the connection element.
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公开(公告)号：US20220297832A1
公开(公告)日：2022-09-22
申请号：US17619771
申请日：2020-05-26
Applicant: LEONARDO S.P.A.
Inventor： Michele Delli Paoli , Fabio Nannoni , Roberto Vanni
Abstract: An anti-torque rotor is described that comprises: a mast rotatable about a first axis; a plurality of blades extending along respective second axes; a control element sliding along the first axis with respect to the mast, integrally rotatable with said mast, and connected to said blades; a control rod sliding axially along first axis and angularly fixed with respect to said first axis; a connection element interposed between the control rod and the control element, sliding along the first axis integrally with the control rod, and configured to enable the relative rotation of said control element with respect to the control rod about the first axis; and a transmission unit available in an active configuration or an inactive configuration; the transmission unit, in turn, comprises: an annular ridge axially and angularly integral with the control rod and radially projecting from the control rod; and a seat engaged by the ridge and angularly integral with the control element.
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公开(公告)号：US11435760B2
公开(公告)日：2022-09-06
申请号：US16649745
申请日：2018-10-05
Applicant: LEONARDO S.P.A.
Inventor： Roberto Vanni , Davide Gagliostro , Davide Casola
Abstract: A stability and command augmentation system for controlling an aircraft, comprising: a first member moveable by a pilot input device to a first position defining a first input; a second member moveable to a second position associated with a second input; and an adder device configured to add the first and second inputs and supply an output signal defining a command for an element to be controlled of the aircraft; the stability and command augmentation system comprises: a casing, a first and a second piston integrally movable with one another inside the casing and operatively connected to the second member; and control means configured to exert a first force on the first piston and a second force on the second piston; the second force is independent of the first force.
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公开(公告)号：US12006028B2
公开(公告)日：2024-06-11
申请号：US17619771
申请日：2020-05-26
Applicant: LEONARDO S.P.A.
Inventor： Michele Delli Paoli , Fabio Nannoni , Roberto Vanni
Abstract: An anti-torque rotor includes a mast rotatable about a first axis; a plurality of blades extending along respective second axes; and a control element sliding along the first axis with respect to the mast, integrally rotatable with said mast, and connected to said blades. A control rod slides axially along first axis and is angularly fixed with respect to said first axis. A connection element is interposed between the control rod and the control element and is configured to enable the relative rotation of said control element with respect to the control rod about the first axis. A transmission unit is available in an active configuration or an inactive configuration. The transmission unit has an annular ridge axially and angularly integral with the control rod and a seat engaged by the ridge and angularly integral with the control element.
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Patent Agency Ranking
公开(公告)号：US20220073196A1
公开(公告)日：2022-03-10
申请号：US17424294
申请日：2020-05-26
Applicant: LEONARDO S.P.A.
Inventor： Michele Delli Paoli , Fabio Nannoni , Roberto Vanni
Abstract: An anti-torque rotor is described comprising: a mast rotatable about a first axis; a plurality of blades hinged on the mast and rotatable about respective second axes to vary the respective angles of attack; a control element sliding along the first axis with respect to the mast, rotatable with the mast and connected to the blades to cause the rotation about the second axes; a control mechanism, axially sliding and angularly fixed with respect to the mast; and a connection element interposed between the control mechanism and the control element, sliding integrally with the control mechanism along the mast; the control mechanism comprises a first and a second rod; the rotor comprises a coupling, which is configured to enable/prevent rotation of the second rod with respect to the first rod when the torque exerted by the first connection element on the second rod about the first axis is greater/less than a threshold value in the event of failure of the connection element.
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公开(公告)号：US11643201B2
公开(公告)日：2023-05-09
申请号：US17312301
申请日：2019-10-31
Applicant: LEONARDO S.P.A.
Inventor： Roberto Vanni , Andrea Antoni
CPC classification number: B64C29/0033 , B64C1/26 , B64C27/006
Abstract: A vertical take-off and/or landing aircraft comprising: a fuselage having a longitudinal axis; a pair of semi-wings protruding from the fuselage in a transversal direction with respect to the longitudinal axis; a pair of a predetermined breaking areas of the semi-wings defining respective preferred rupture sections at which the respective semi-wings are designed to break, during operation, in a controlled way moving along a preferred collapse trajectory in the event of impact; and at least one fluidic line configured to convey at least one service fluid from and/or towards at least one said semi-wing and crossing at least one of said preferred rupture sections; the aircraft comprises a self-sealing coupling movable between a first configuration in which it enables the flow of said service fluid from and/or towards the semi-wing, and a second configuration in which it prevents the above-mentioned flow and the spilling of the service fluid from the fluidic line; the self-sealing coupling is movable from the first to the second configuration via the movement of the semi-wing along the preferred collapse trajectory.
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公开(公告)号：US11577829B2
公开(公告)日：2023-02-14
申请号：US17059710
申请日：2020-05-26
Applicant: LEONARDO S.P.A.
Inventor： Michele Delli Paoli , Fabio Nannoni , Roberto Vanni
IPC: B64C27/82 , B64C27/605
Abstract: An anti-torque rotor is described for a helicopter, comprising: a mast rotatable about a first axis; a plurality of blades hinged on the mast, extending along respective second axes transversal to said first axis and rotatable about respective said second axes to alter the respective angles of attack; a control element sliding and rotating with respect to the mast, and operatively connected to said blades to cause the rotation of said blades about respective second axes following a translation of said element along the first axis; a control rod sliding axially along first axis with respect to the mast and angularly fixed with respect to the first axis; and a bearing interposed between the control rod and the control element, sliding along the first axis with respect to the mast and integrally with the control rod; the anti-torque rotor further comprises an interface made of an antifriction material interposed between said control rod and said bearing.
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公开(公告)号：US20220024572A1
公开(公告)日：2022-01-27
申请号：US17312301
申请日：2019-10-31
Applicant: LEONARDO S.P.A.
Inventor： Roberto Vanni , Andrea Antoni
Abstract: A vertical take-off and/or landing aircraft comprising: a fuselage having a longitudinal axis; a pair of semi-wings protruding from the fuselage in a transversal direction with respect to the longitudinal axis; a pair of a predetermined breaking areas of the semi-wings defining respective preferred rupture sections at which the respective semi-wings are designed to break, during operation, in a controlled way moving along a preferred collapse trajectory in the event of impact; and at least one fluidic line configured to convey at least one service fluid from and/or towards at least one said semi-wing and crossing at least one of said preferred rupture sections; the aircraft comprises a self-sealing coupling movable between a first configuration in which it enables the flow of said service fluid from and/or towards the semi-wing, and a second configuration in which it prevents the above-mentioned flow and the spilling of the service fluid from the fluidic line; the self-sealing coupling is movable from the first to the second configuration via the movement of the semi-wing along the preferred collapse trajectory.
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9.发明申请公开(公告)号：US20200278698A1
公开(公告)日：2020-09-03
申请号：US16649745
申请日：2018-10-05
Applicant: LEONARDO S.P.A.
Inventor： Roberto Vanni , Davide Gagliostro , Davide Casola
Abstract: A stability and command augmentation system for controlling an aircraft, comprising: a first member moveable by a pilot input device to a first position defining a first input; a second member moveable to a second position associated with a second input; and an adder device configured to add the first and second inputs and supply an output signal defining a command for an element to be controlled of the aircraft; the stability and command augmentation system comprises: a casing, a first and a second piston integrally movable with one another inside the casing and operatively connected to the second member; and control means configured to exert a first force on the first piston and a second force on the second piston; the second force is independent of the first force.
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