-
公开(公告)号：DE3683747D1
公开(公告)日：1992-03-12
申请号：DE3683747
申请日：1986-12-18
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
Abstract: A film cooling passage through the external wall of a hollow airfoil for a gas turbine engine has a metering section in series flow relation with a diffusing section leading to the passage outlet at the external surface of the airfoil over which a hot gas flows during operation. The diffusing section is generally rectangular in cross section perpendicular to the axis of the passage. Upstream and downstream longitudinally extending, spaced apart, facing surfaces of the diffusing section are joined together by a pair of spaced apart side walls which face each other and diverge from each other in the longitudinal direction toward the outlet of the passage. These side walls blend, along their length, with the downstream surface as a smooth curve of large radius. The diameter of the corner curvature of the passage is on the same order of magnitude as the distance between the upstream and downstream surfaces of the diffusing section at the location in question. The large corner curvatures, as opposed to filet radii, allow the side walls to diverge from each other at a greater angle without separation of the coolant fluid therefrom, permitting the spreading of smaller amounts of coolant air over a larger area of the airfoil external surface.
-
公开(公告)号：AU591952B2
公开(公告)日：1989-12-21
申请号：AU6674386
申请日：1986-12-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： AUXIER THOMAS A , FIELD ROBERT EUGENE
-
公开(公告)号：AU6674186A
公开(公告)日：1987-06-25
申请号：AU6674186
申请日：1986-12-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： PHILLIPS JAMES STEWART , FIELD ROBERT EUGENE
Abstract: The wall of a hollow turbine airfoil has a longitudinally extending coolant outlet slot in its external surface which intersects, along its length, a longitudinally extending cylindrical channel within the wall. Metering passages extend from the inside surface of the airfoil wall to the cylindrical channel and direct a metered amount of coolant into the channel in a manner which results in a swirling motion being imparted to the fluid as the fluid diffuses within the channel. The coolant is thereupon ejected from the channel through the slot in the external surface as a film on the external surface of the airfoil along the length of the slot. The swirling of the fluid within the cylindrical channel helps diffuse the fluid such that the outlet slot becomes completely filled with coolant, whereby a film of coolant is created on the airfoil surface downstream of the slot over the full length of the slot.
-
公开(公告)号：DE3683742D1
公开(公告)日：1992-03-12
申请号：DE3683742
申请日：1986-12-18
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE , PHILLIPS JAMES STEWART
IPC: F01D5/18
Abstract: The wall of a hollow airfoil for a gas turbine engine includes a film cooling slot therein elongated in the longitudinal direction and having a base within the wall and an outlet at the external surface of the airfoil. A plurality of metering passages extend from inlets at the internal surface of the wall and intersect the slot near its base. The metering passages are angled to direct a metered flow of coolant fluid at a sharp angle against a surface of the slot to cause turbulence and diffusion of the coolant fluid within the slot in order that the coolant fluid fill the entire slot. The coolant fluid thereupon exits the slot as a thin film over the surface of the airfoil downstream of the slot outlet along the full length of the slot.
-
公开(公告)号：AU6667986A
公开(公告)日：1987-06-25
申请号：AU6667986
申请日：1986-12-16
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
Abstract: A sheet metal electrode for forming a shaped, diffusing film coolant passage has a straight, longitudinally extending forward section forming an acute angle with a flat middle section, which, in turn, extends from a rear section which is the base of the electrode. The middle section includes a pair of edges rearwardly diverging from the longitudinal direction and from which extend side walls substantially perpendicular to the middle section. Longitudinally extending edges of the side walls are in the same plane as a lower, flat surface of the forward section such that the surface of the passage formed by such lower surface of the forward section is in the same plane as a surface of the diffusing portion of the passage which is formed by the longitudinally extending edges of the side walls.
-
Patent Agency Ranking
公开(公告)号：AU6667886A
公开(公告)日：1987-06-25
申请号：AU6667886
申请日：1986-12-16
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
-
公开(公告)号：AU6656086A
公开(公告)日：1987-06-25
申请号：AU6656086
申请日：1986-12-15
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
Abstract: A film cooling passage through the external wall of a hollow airfoil for a gas turbine engine has a metering section in series flow relation with a diffusing section leading to the passage outlet at the external surface of the airfoil over which a hot gas flows during operation. The diffusing section is generally rectangular in cross section perpendicular to the axis of the passage. Upstream and downstream longitudinally extending, spaced apart, facing surfaces of the diffusing section are joined together by a pair of spaced apart side walls which face each other and diverge from each other in the longitudinal direction toward the outlet of the passage. These side walls blend, along their length, with the downstream surface as a smooth curve of large radius. The diameter of the corner curvature of the passage is on the same order of magnitude as the distance between the upstream and downstream surfaces of the diffusing section at the location in question. The large corner curvatures, as opposed to filet radii, allow the side walls to diverge from each other at a greater angle without separation of the coolant fluid therefrom, permitting the spreading of smaller amounts of coolant air over a larger area of the airfoil external surface.
-
公开(公告)号：DE3679794D1
公开(公告)日：1991-07-18
申请号：DE3679794
申请日：1986-12-18
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
Abstract: A sheet metal electrode for forming a shaped, diffusing film coolant passage has a straight, longitudinally extending forward section forming an acute angle with a flat middle section, which, in turn, extends from a rear section which is the base of the electrode. The middle section includes a pair of edges rearwardly diverging from the longitudinal direction and from which extend side walls substantially perpendicular to the middle section. Longitudinally extending edges of the side walls are in the same plane as a lower, flat surface of the forward section such that the surface of the passage formed by such lower surface of the forward section is in the same plane as a surface of the diffusing portion of the passage which is formed by the longitudinally extending edges of the side walls.
-
公开(公告)号：AU597922B2
公开(公告)日：1990-06-14
申请号：AU6674186
申请日：1986-12-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： PHILLIPS JAMES STEWART , FIELD ROBERT EUGENE
Abstract: The wall of a hollow turbine airfoil has a longitudinally extending coolant outlet slot in its external surface which intersects, along its length, a longitudinally extending cylindrical channel within the wall. Metering passages extend from the inside surface of the airfoil wall to the cylindrical channel and direct a metered amount of coolant into the channel in a manner which results in a swirling motion being imparted to the fluid as the fluid diffuses within the channel. The coolant is thereupon ejected from the channel through the slot in the external surface as a film on the external surface of the airfoil along the length of the slot. The swirling of the fluid within the cylindrical channel helps diffuse the fluid such that the outlet slot becomes completely filled with coolant, whereby a film of coolant is created on the airfoil surface downstream of the slot over the full length of the slot.
-
公开(公告)号：AU593311B2
公开(公告)日：1990-02-08
申请号：AU6674286
申请日：1986-12-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FIELD ROBERT EUGENE
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.024 seconds)
