公开(公告)号：US20180202299A1

公开(公告)日：2018-07-19

申请号：US15408882

申请日：2017-01-18

Applicant: United Technologies Corporation

Inventor： James R. Murdock ,  James H. Moffitt ,  Scot A. Webb ,  Jay Thomas Abraham ,  Maria C. Kirejczyk

IPC: F01D5/28 ,  F04D29/02

CPC classification number: F01D5/28 ,  F01D5/3092 ,  F04D29/023 ,  F05D2220/323 ,  F05D2220/36 ,  F05D2230/60 ,  F05D2240/303 ,  F05D2260/95 ,  F05D2300/121 ,  F05D2300/125 ,  F05D2300/133 ,  F05D2300/1616 ,  F05D2300/50 ,  Y02T50/671

Abstract: A blade for a gas turbine engine. The blade having: an airfoil formed from a first material; a protective sheath disposed on a leading edge of the airfoil, the protective sheath being formed from a second material, the first material being galvanically incompatible with the second material and the first material being less noble than the second material; a non-conductive material disposed between the protective sheath and the airfoil so that they are electrically isolated from each other; a sacrificial anode in contact with the blade, wherein the sacrificial anode is formed from a third material that is less noble than the first material such that it will corrode before the first material if the non-conductive material disposed between the protective sheath and the airfoil is compromised and the first material and the second material are no longer electrically isolated from each other.

公开(公告)号：US10781827B1

公开(公告)日：2020-09-22

申请号：US15872171

申请日：2018-01-16

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Jason Elliott ,  Daniel C. Falk ,  Myron L. Klein ,  Ethan C. Drew ,  James H. Moffitt ,  Darryl Whitlow ,  Byron R. Monzon ,  Jay Thomas Abraham ,  William R. Graves

IPC: F04D29/32 ,  F04D29/38 ,  F02C3/04 ,  F02K3/06 ,  F04D29/66 ,  F01D5/16

Abstract: A turbomachine airfoil element includes an airfoil that has pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 27.5-28.5 inches (699-724 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span and is in a range of 13.0-14.0 inches (330-356 mm). The airfoil element includes at least two of a first mode with a frequency of 34±10% Hz, a second mode with a frequency of 90±10% Hz, a third mode with a frequency of 178±10% Hz, a fourth mode with a frequency of 222±10% Hz, a fifth mode with a frequency of 307±10% Hz and a sixth mode with a frequency of 389±10% Hz.

公开(公告)号：US20160010470A1

公开(公告)日：2016-01-14

申请号：US14768387

申请日：2013-12-13

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： James H. Moffitt

IPC: F01D5/28 ,  F01D5/14 ,  F02C3/04 ,  F01D5/02

CPC classification number: F01D5/282 ,  F01D5/02 ,  F01D5/147 ,  F01D5/288 ,  F01D21/045 ,  F02C3/04 ,  F04D29/324 ,  F05D2220/32 ,  F05D2220/36 ,  F05D2240/303 ,  F05D2260/311 ,  F05D2300/121 ,  F05D2300/173 ,  F05D2300/603 ,  Y02T50/672

Abstract: In accordance with one aspect of the disclosure, a rotor for a gas turbine engine is disclosed. The rotor may include a rotor disk and a blade extending radially outward from the rotor disk. The blade may have a leading edge and a sheath may extend along the leading edge of the blade. The sheath may be formed from a brittle material.

Abstract translation: 根据本公开的一个方面，公开了一种用于燃气涡轮发动机的转子。 转子可以包括转子盘和从转子盘径向向外延伸的叶片。 叶片可以具有前缘并且护套可以沿着叶片的前缘延伸。 护套可以由脆性材料形成。

公开(公告)号：US10508556B2

公开(公告)日：2019-12-17

申请号：US14761841

申请日：2013-01-17

Applicant: United Technologies Corporation

Inventor： Lee Drozdenko ,  James H. Moffitt

IPC: F01D5/32 ,  F01D5/30 ,  F01D25/28 ,  F01D5/02 ,  F01D5/12 ,  B25B7/02 ,  B25B7/08 ,  F01D15/12

Abstract: An assembly includes a rotor disk, a rotor blade and a root spacer. The rotor disk includes a slot that extends longitudinally into the rotor disk. The rotor blade includes a blade root arranged within the slot. The root spacer is arranged with the slot between the rotor disk and the blade root. The root spacer extends longitudinally to a spacer end, and includes a grip element and a plurality of notches. The grip element is arranged at the spacer end laterally between the notches. The grip element at least partially defines the notches. The notches extend radially and longitudinally into the root spacer.

公开(公告)号：US20190120255A1

公开(公告)日：2019-04-25

申请号：US15793838

申请日：2017-10-25

Applicant: United Technologies Corporation

Inventor： Peter V. Tomeo ,  James H. Moffitt

IPC: F04D29/66 ,  F04D29/38 ,  F04D29/32

Abstract: A segmented structural link may comprise a base portion having a first face, a tail portion, and a distal end having a second face. The tail portion may extend at an angle relative to the first face. The tail portion may comprise a first bend and may further comprise a second bend. The base portion may comprise at least one of a captured nut, a nut plate, or a self-clinching nut.