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公开(公告)号：US10036349B2
公开(公告)日：2018-07-31
申请号：US14916467
申请日：2014-09-05
Inventor： Irwin Kernemp , Jonathan Langridge , Sébastien Pascal , Denis Guillois , Gérard Clere , Loïc Chapelain
Abstract: An afterbody for a turbojet engine having a central axis, provided with a nozzle comprising two doors facing each other between two lateral beams. The doors pivot around axes defining a pivot direction, between a retracted position, in which a middle portion of the downstream edge of the doors forms the edge of the outlet section of the nozzle combined with the downstream edges of the two lateral beams, and a deployed position, in which the middle portions of the downstream edges of the pivoting doors come together so as to block the channel between the two lateral beams in order to reverse the thrust of the turbojet engine gases. The edge of the outlet section of the nozzle further having a crown of noise-reducing chevrons alternating with indentations and the afterbody.
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2.发明申请AFTERBODY FOR A TURBOJET ENGINE COMPRISING A NOZZLE PROVIDED WITH A THRUST REVERSER SYSTEM THAT INCORPORATES A CROWN OF NOISE-REDUCING CHEVRONS 审中-公开一个涡轮发动机的后部，包括一个提供减震减速机的扭矩逆变器系统的喷嘴公开(公告)号：US20160215728A1
公开(公告)日：2016-07-28
申请号：US14916467
申请日：2014-09-05
Inventor： Irwin Kernemp , Jonathan Langridge , Sébastien Pascal , Denis Guillois , Gérard Clere , Loïc Chapelain
Abstract: An afterbody for a turbojet engine having a central axis, provided with a nozzle comprising two doors mounted facing each other between two lateral beams pivoting around axes defining a pivot direction, between a retracted position, in which a middle portion of the downstream edge of said doors forms the edge of the outlet section of the nozzle combined with the downstream edges of the two lateral beams, and a deployed position, in which said middle portions of the downstream edges of the pivoting doors come together so as to block the channel between the two lateral beams in order to reverse the thrust of the turbojet engine gases, the edge of the outlet section of the nozzle further having a crown of noise-reducing chevrons alternating with indentations and the afterbody wherein each noise-reducing chevron formed on the middle portion of the downstream edge of a pivoting door is opposite an indentation in the middle portion of the other pivoting door in the direction perpendicular to said pivot direction, the shapes of the chevrons and of the indentations being defined to match in such a way that each chevron fits into the opposing indentation when the pivoting doors are deployed.
Abstract translation: 一种用于具有中心轴的涡轮喷气发动机的后箱，其具有喷嘴，所述喷嘴包括两个门，所述两个门在两个横向梁之间彼此面对，所述两个侧壁在围绕枢轴方向的轴线枢转的两个横向梁之间，在缩回位置之间， 门形成喷嘴的出口部分的边缘与两个横向梁的下游边缘组合，并且展开位置，枢转门的下游边缘的所述中间部分聚集在一起，以便阻挡在两个横梁之间的通道 两个横梁为了扭转涡轮喷气发动机气体的推力，喷嘴的出口部分的边缘还具有与压痕交替的减噪人字形冠和后体，其中形成在中间部分上的每个减噪人字形 枢转门的下游边缘在另一个枢转门的中间部分的垂直方向上的凹陷相对 所述枢转方向，所述人字形的形状和所述凹口的形状被限定为使得当枢转门被展开时每个人字形装配到所述相对的凹口中。
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3.发明授权Method for defining the shape of a turbomachine convergent-divergent nozzle, and corresponding convergent-divergent nozzle 有权用于定义涡轮机会聚发散喷嘴的形状的方法以及相应的会聚发散喷嘴公开(公告)号：US09249755B2
公开(公告)日：2016-02-02
申请号：US13764125
申请日：2013-02-11
Applicant: SNECMA
Inventor： Julien Szydlowski , Guillaume Bodard , Matthieu Leyko , Jonathan Langridge
CPC classification number: F02K1/48 , A45D34/00 , A45D40/00 , F02K1/386 , F02K1/46 , F05B2250/611 , F05D2240/127 , F05D2250/323 , F05D2260/96 , F05D2270/20 , Y10T29/49826
Abstract: According to the invention, the method for defining the shape of a convergent-divergent nozzle of longitudinal axis L-L comprising a convergent part connected, at a throat, to a divergent part the downstream free end of which comprises scallops delimiting noise-reducing chevrons distributed in the circumferential direction, comprises defining beforehand the divergent part of the nozzle using a divergent first portion, a divergent second portion and a convergent portion, attributing an initial value to dimensional parameters defining the chevrons and the three portions, calculating performance criteria and checking that the calculated performance criteria satisfy predefined performance conditions.
Abstract translation: 根据本发明，用于定义纵向轴线LL的会聚发散喷嘴的形状的方法包括在喉部处连接到其下游自由端的发散部分的收敛部分，该收敛部分包括分隔在其中的减少噪音的人字形的扇贝 圆周方向包括使用发散的第一部分，发散的第二部分和收敛部分事先确定喷嘴的发散部分，将初始值归因于定义人字形和三部分的尺寸参数，计算性能标准并检查 计算的性能标准满足预定义的性能条件。
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