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    SYNCHRONIZATION OF AIRCRAFT ENGINES
    3.
    发明公开
    SYNCHRONIZATION OF AIRCRAFT ENGINES 审中-公开
    航空发动机的同步

    公开(公告)号：EP3271250A1

    公开(公告)日：2018-01-24

    申请号：EP16711894.2

    申请日：2016-03-07

    申请人： Bombardier Inc. ,  Short Brothers Plc

    发明人： COLAVINCENZO, Stephen ,  BRODEUR, Andre ,  CARON L ECUYER, Alexis ,  BOGDAN, Mirel ,  JOVICIC, Dragan

    IPC分类号： B64D31/12 ,  F02C9/18 ,  F02C9/28 ,  F02C9/42

    摘要： Methods and related apparatus for improving synchronization of two or more engines on an aircraft are disclosed. Such method may be used where each engine comprises a first spool and a second spool, and, where a rotational speed of a first spool of a first engine has been substantially synchronized with a rotational speed of a first spool of a second engine. An exemplary method comprises receiving a value of a sensed parameter useful in controlling the first engine; adding a bias to the value; and using the biased value for controlling the first engine to cause a change in rotational speed of the second spool of the first engine in relation to the rotational speed of the first spool of the first engine.

    DUCT COUPLING SYSTEM
    4.
    发明公开
    DUCT COUPLING SYSTEM 审中-公开

    公开(公告)号：EP3670991A1

    公开(公告)日：2020-06-24

    申请号：EP19215449.0

    申请日：2019-12-12

    申请人： Bombardier Inc.

    发明人： BRODEUR, Andre ,  CARON-L'ECUYER, Alexis

    IPC分类号： F16L27/10 ,  F16L55/033

    摘要： A duct coupling system includes a first and second duct, a vibration attenuation system, a rigid ring, and a fastening system. The first duct has a first flange (314) aligned with a second flange (330) of the second duct. The vibration attenuating system abuts a first side (318) and a second side (322) of the first flange and abuts a first side (334) of the second flange. A portion of the vibration attenuating system (306) encircles the first duct. The vibration attenuating system is configured to attenuate vibrations passing between the first and second ducts. The rigid ring (302) encircles the first duct and abuts the vibration attenuation system (306). The fastening system (354) couples the first duct to the second duct and compresses the vibration attenuating system. The rigid ring does not contact the first duct and the first duct does not contact the second duct.

    NOISE REDUCING AIR DUCT
    6.
    发明公开
    NOISE REDUCING AIR DUCT 审中-公开

    公开(公告)号：EP3523197A1

    公开(公告)日：2019-08-14

    申请号：EP17781607.1

    申请日：2017-09-28

    申请人： Bombardier Inc. ,  Learjet Inc.

    发明人： CARON-L'ECUYER, Alexis ,  BRODEUR, Andre

    IPC分类号： B64D13/06 ,  F24F13/24 ,  F24F13/068

    摘要： An air duct includes a first chamber and a second chamber, the first chamber being defined between an air handling device and the second chamber, and the second chamber being defined between the first chamber and an environment exterior to the air duct, a plurality of first openings between the first chamber and the second chamber, a plurality of second openings between the second chamber and the environment exterior to the air duct, and a sound absorbing material defining at least a portion of an interior surface of at least one of the first chamber and the second chamber.