公开(公告)号：US20160063139A1

公开(公告)日：2016-03-03

申请号：US14784920

申请日：2014-04-16

Applicant: SNECMA

Inventor： Damien Joseph Cellier ,  Vincent Paul Gabriel Perrot

IPC: G06F17/50 ,  F01D9/04 ,  F01D5/14

CPC classification number: G06F17/50 ,  F01D5/14 ,  F01D5/141 ,  F01D9/041 ,  F05D2220/30 ,  F05D2260/81 ,  G06F17/5009 ,  Y02T50/673

Abstract: The present invention relates to a method for modelling a part (1), the method being characterised in that it comprises implementing, using data processing means (11) of a piece of equipment (10), steps of: (a) parameterising a curve of class C1 representing the value of a physical quantity characterising said part (1) as a function of a position along at least one portion of the part (1), the curve being defined by: a. two end points (PCU0, PCUK) defining the extent of said portion of the part (1); b. at least one intermediate point PCUi, iΣ[1,K−1]) located between the two end points (PCU0, PCUK); c. at least two Bezier curves connected to said intermediate point; the parameterization being carried out using one or more parameters defining said intermediate point; (b) determining optimised values for said parameters of said curve; and (c) returning the determined values to an interface (13) of said piece of equipment (10).

Abstract translation: 本发明涉及一种对部分（1）进行建模的方法，所述方法的特征在于其包括使用一件设备（10）的数据处理装置（11）来实现以下步骤：（a）参数化曲线 类别C1表示作为沿着部分（1）的至少一部分的位置的函数的表征所述部分（1）的物理量的值，该曲线由以下定义：a。 限定部分（1）的所述部分的范围的两个端点（PCU0，PCUK）; b。 位于两个端点（PCU0，PCUK）之间的至少一个中间点PCUi，i＆Sgr; [1，K-1]）; C。 连接到所述中间点的至少两个贝塞尔曲线; 使用定义所述中间点的一个或多个参数来执行参数化; （b）确定所述曲线的所述参数的优化值; 和（c）将所确定的值返回到所述设备（10）的接口（13）。

公开(公告)号：US20160154901A1

公开(公告)日：2016-06-02

申请号：US14903559

申请日：2014-07-07

Applicant: SNECMA

Inventor： Damien Joseph Cellier ,  Vincent Perrot ,  Matthieu Jean Luc Vollebregt ,  Nicolas Jean Fernand Pignier

IPC: G06F17/50

CPC classification number: G06F17/50 ,  G06F17/5009 ,  G06F17/5086

Abstract: The present invention relates to a method for modeling at least part of a non-axisymmetric surface (S) of one portion (2) of a part (1), the portion (2) being bounded by a first and a second extremal planes (PS, PR). The method is characterized in that it includes the implementation, by a means (11) for processing data from a device (10), of the following steps: (a) modeling at least two basic non-axisymmetric surfaces (Sk, SI, SE) making up said surface (S), each of the basic surfaces (Sk, SI, SE) extending between both extremal planes (PS, PR) of the portion (S) that are juxtaposed so as to have a junction of at least C1 at the extremal planes (PS, PR) and at least one discontinuity; (b) constructing at least one C1 connection curve (CR) tangential to the first and second surfaces; (c) locally modifying the first and second basic surfaces (Sk, SI, SE) such as to keep to said connection curve (CR) near said discontinuity; and (d) restoring, on one interface (13) of said device (10), said at least part of the obtained surface (S).

Abstract translation: 本发明涉及一种用于对部分（1）的一部分（2）的非轴对称表面（S）的至少一部分进行建模的方法，所述部分（2）由第一和第二极平面（ PS，PR）。 该方法的特征在于，其包括通过用于处理来自装置（10）的数据的装置（11）的实现，以下步骤：（a）对至少两个基本非轴对称表面（Sk，SI，SE ）构成所述表面（S），在所述部分（S）的两个极平面（PS，PR）之间延伸的基本表面（Sk，SI，SE）中的每一个并置，以便具有至少C1 在极地（PS，PR）和至少一个不连续性; （b）构造与第一和第二表面相切的至少一个C1连接曲线（CR）; （c）对所述第一和第二基本表面（Sk，SI，SE）进行局部修改，以便在所述不连续处附近保持所述连接曲线（CR）; 和（d）在所述装置（10）的一个界面（13）上恢复所获得的表面（S）的至少一部分。

公开(公告)号：US10301941B2

公开(公告)日：2019-05-28

申请号：US14910586

申请日：2014-08-04

Applicant: SNECMA

Inventor： Damien Joseph Cellier ,  Alicia Lise Julia Dufresne ,  Philippe Pierre Marcel Marie Pelletrau ,  Vincent Paul Gabriel Perrot ,  Laurent Christophe Francis Villaines

IPC: F01D5/14 ,  F04D29/32 ,  F04D29/38

Abstract: A turbine engine rotor blade including an airfoil defined by plane airfoil sections stacked in a radial direction, each airfoil section being positioned radially at a height H, where height H is expressed as a percentage of the total height of the airfoil, and being identified by its sweep angle λ and its dihedral angle ν, wherein the sweep angle λ varies as a function of height H in such a manner that the sweep angle λ reaches a maximum at a height HλM, the value HλM lying in the range 5% to 40%, and the sweep angle λ increases from 0% to HλM, and wherein the dihedral angle ν varies as a function of H, the dihedral angle ν being a decreasing function of height H for heights H lying in the range 0% to Hν1, Hν1 lying in the range 10% to 40%.

公开(公告)号：US10216867B2

公开(公告)日：2019-02-26

申请号：US14903559

申请日：2014-07-07

Applicant: SNECMA

Inventor： Damien Joseph Cellier ,  Vincent Perrot ,  Matthieu Jean Luc Vollebregt ,  Nicolas Jean Fernand Pignier

IPC: G06F17/50

Abstract: A method for modeling at least part of a non-axisymmetric surface (5) of one portion (2) of a part (1). The portion (2) is bounded by first and second extremal planes (PS, PR). The method includes processing data from a device (10), by: (a) modeling at least two basic non-axisymmetric surfaces (Sk, SI, SE) making up the surface, each of the basic surfaces (Sk, SI, SE) extending between both extremal planes (PS, PR) of the portion (S); (b) constructing at least one connection curve (CR) tangential to the first and second surfaces; (c) locally modifying the first and second basic surfaces (Sk, SI, SE) to keep to the connection curve (CR) near a discontinuity; and (d) restoring, at least part of the obtained surface (5).

公开(公告)号：US10002209B2

公开(公告)日：2018-06-19

申请号：US14784920

申请日：2014-04-16

Applicant: SNECMA

Inventor： Damien Joseph Cellier ,  Vincent Paul Gabriel Perrot

IPC: G06F17/50 ,  F01D9/04 ,  F01D5/14

CPC classification number: G06F17/50 ,  F01D5/14 ,  F01D5/141 ,  F01D9/041 ,  F05D2220/30 ,  F05D2260/81 ,  G06F17/5009 ,  Y02T50/673

Abstract: The present invention relates to a method for modelling a part (1), the method being characterized in that it comprises implementing, using data processing means (11) of a piece of equipment (10), steps of: (a) parameterizing a curve of class C1 representing the value of a physical quantity characterizing said part (1) as a function of a position along at least one portion of the part (1), the curve being defined by: a. two end points (PCU0, PCUK) defining the extent of said portion of the part (1); b. at least one intermediate point PCUi, i∈[[1,K−1]]) located between the two end points (PCU0, PCUK); c. at least two Bezier curves connected to said intermediate point; the parameterization being carried out using one or more parameters defining said intermediate point; (b) determining optimized values for said parameters of said curve; and (c) returning the determined values to an interface (13) of said piece of equipment (10).