Patents by Inventor Franz-Josef Ertl
Franz-Josef Ertl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250092795Abstract: Avane actuating arm (10) for a turbomachine, the vane actuating arm (10) including two legs (12) which are pivotable relative to each between at least one open position and a closed position and form a clamping device having at least one clamping surface (14) on each of the legs (12). In the closed position, a vane stem (20) provided for varying the pitch of a stator vane of the turbomachine can be frictionally held between the two legs (12) via the two clamping surfaces (14), forming a clamping connection (16). Each of the legs (12) has an opening (50), the openings (50) overlapping each other in the closed position such that a through-bolt connectable to an actuating element of the turbomachine for controlling an angular position of the vane stem (20) can be passed through the openings (50).Type: ApplicationFiled: November 25, 2024Publication date: March 20, 2025Inventors: Florian NEUBERGER, Martin PERNLEITNER, David STRUNCK, Franz-Josef ERTL, Marcin KOZDRAS
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Patent number: 12221902Abstract: A connecting structure (10) for load transfer, in particular in a gas turbine (1), including a strut (20) and at least one wall element (30) is provided. The strut (20) at one end is integrally joined to the wall element (30), and the strut (20) and the wall element (30) are enclosed by a fillet (40), at least in areas, and integrally joined to same. An elastic deformation of the involved elements of the structure during the load transfer and/or load absorption is improved in that a root section (50) that is formed by a ridge (56) and that extends from the strut (20) to the wall element (30) is situated on the fillet (40).Type: GrantFiled: January 23, 2023Date of Patent: February 11, 2025Assignee: MTU Aero Engines AGInventors: Franz-Josef Ertl, Michael Cipollone
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Patent number: 12196088Abstract: An adjustment lever adjusts a stator vane of a turbomachine. The adjustment lever has: a first connection site, of a plurality of connection sites, the first connection site being configured to join to an adjustment ring; a second connection site, of the connection sites, the second connection stie being configured to join to the stator vane; and a joining member arranged between the first connection site and the second connection site. The joining member is shaped having at least two struts which adjoin at least one of the connection sites.Type: GrantFiled: November 7, 2022Date of Patent: January 14, 2025Assignee: MTU AERO ENGINES AGInventors: Julia Schmidt-Petersen, Franz-Josef Ertl, Florian Neuberger
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Patent number: 12049834Abstract: A guide blade arrangement (20) for a turbomachine (1), including a guide blade airfoil (22) and a platform (21). The guide blade airfoil (22) is situated at a side (21.1) of the platform (21) facing the gas channel, an opposite side (21.2) of the platform (21) facing away from the gas channel being contoured at least in one area (30.1, 30.2) with elevations (25) and depressions (26) that follow one another in the circumferential direction (23) in relation to a longitudinal axis (2) of the turbomachine (1), and the elevations (25) and depressions (26) at the side (21.2) facing away from the gas channel being set via a platform thickness (31), taken radially in each case, that is variable in the circumferential direction (23) and that repeatedly increases and decreases with a continuous profile.Type: GrantFiled: February 23, 2021Date of Patent: July 30, 2024Assignee: MTU Aero Engines AGInventors: Franz-Josef Ertl, Hans-Peter Hackenberg, Alexander Buck
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Patent number: 11873722Abstract: The present invention relates to a lever for adjusting an adjustable vane of a turbomachine, wherein the lever has a fulcrum for the rotatable mounting of the lever about an axis of rotation, a first load arm with a first adjusting connection point for at least indirect connection to an adjustable vane and a first force arm with a first actuating connection point for connection to an adjusting device, wherein the lever further has a first strut, which connects the first adjusting connection point and the first actuating connection point to each other and thereby extends in an arc-shaped manner about the axis of rotation.Type: GrantFiled: February 17, 2023Date of Patent: January 16, 2024Assignee: MTU Aero Engines AGInventors: Franz-Josef Ertl, Florian Neuberger, David Strunck, Martin Pernleitner, Christian Roth
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Publication number: 20230265765Abstract: The present invention relates to a lever for adjusting an adjustable vane of a turbomachine, wherein the lever has a fulcrum for the rotatable mounting of the lever about an axis of rotation, a first load arm with a first adjusting connection point for at least indirect connection to an adjustable vane and a first force arm with a first actuating connection point for connection to an adjusting device, wherein the lever further has a first strut, which connects the first adjusting connection point and the first actuating connection point to each other and thereby extends in an arc-shaped manner about the axis of rotation.Type: ApplicationFiled: February 17, 2023Publication date: August 24, 2023Applicant: MTU Aero Engines AGInventors: Franz-Josef Ertl, Florian Neuberger, David Strunck, Martin Pernleitner, Christian Roth
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Publication number: 20230235676Abstract: A connecting structure (10) for load transfer, in particular in a gas turbine (1), including a strut (20) and at least one wall element (30) is provided. The strut (20) at one end is integrally joined to the wall element (30), and the strut (20) and the wall element (30) are enclosed by a fillet (40), at least in areas, and integrally joined to same. An elastic deformation of the involved elements of the structure during the load transfer and/or load absorption is improved in that a root section (50) that is formed by a ridge (56) and that extends from the strut (20) to the wall element (30) is situated on the fillet (40).Type: ApplicationFiled: January 23, 2023Publication date: July 27, 2023Inventors: Franz-Josef ERTL, Michael CIPOLLONE
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Publication number: 20230203958Abstract: A guide blade arrangement (20) for a turbomachine (1), including a guide blade airfoil (22) and a platform (21). The guide blade airfoil (22) is situated at a side (21.1) of the platform (21) facing the gas channel, an opposite side (21.2) of the platform (21) facing away from the gas channel being contoured at least in one area (30.1, 30.2) with elevations (25) and depressions (26) that follow one another in the circumferential direction (23) in relation to a longitudinal axis (2) of the turbomachine (1), and the elevations (25) and depressions (26) at the side (21.2) facing away from the gas channel being set via a platform thickness (31), taken radially in each case, that is variable in the circumferential direction (23) and that repeatedly increases and decreases with a continuous profile.Type: ApplicationFiled: February 23, 2021Publication date: June 29, 2023Inventors: Franz-Josef ERTL, Hans-Peter HACKENBERG, Alexander BUCK
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Publication number: 20230145371Abstract: An adjustment lever adjusts a stator vane of a turbomachine. The adjustment lever has: a first connection site, of a plurality of connection sites, the first connection site being configured to join to an adjustment ring; a second connection site, of the connection sites, the second connection stie being configured to join to the stator vane; and a joining member arranged between the first connection site and the second connection site. The joining member is shaped having at least two struts which adjoin at least one of the connection sites.Type: ApplicationFiled: November 7, 2022Publication date: May 11, 2023Inventors: Julia Schmidt-Petersen, Franz-Josef Ertl, Florian Neuberger
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Patent number: 11585242Abstract: A gas turbine component, in particular a stator vane cluster (10), having at least one radial flange (12, 13) with a radial slot (20) for spoke-type centering of a gas turbine element, in particular an inner ring (100), the radial slot (20) having a first slot flank (21), a slot base (23) adjoining the same, and a second slot flank (22) adjoining the same, the slot base (23) being asymmetric with respect to a mid-plane (M) which extends radially and perpendicularly to the circumferential direction and centrally between the two slot flanks (21, 22).Type: GrantFiled: March 22, 2021Date of Patent: February 21, 2023Assignee: MTU Aero Engines AGInventors: Franz-Josef Ertl, Hans-Peter Hackenberg, Alexander Buck, Oskar Ostermeir
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Publication number: 20210301681Abstract: A gas turbine component, in particular a stator vane cluster (10), having at least one radial flange (12, 13) with a radial slot (20) for spoke-type centering of a gas turbine element, in particular an inner ring (100), the radial slot (20) having a first slot flank (21), a slot base (23) adjoining the same, and a second slot flank (22) adjoining the same, the slot base (23) being asymmetric with respect to a mid-plane (M) which extends radially and perpendicularly to the circumferential direction and centrally between the two slot flanks (21, 22).Type: ApplicationFiled: March 22, 2021Publication date: September 30, 2021Inventors: Franz-Josef ERTL, Hans-Peter HACKENBERG, Alexander BUCK, Oskar OSTERMEIR
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Patent number: 9816386Abstract: The present invention relates to a gas turbine casing arrangement having a gas turbine casing element (10), a guide-vane ring with an outer ring (20), and a coated ring (30), which lies radially opposite a rotor grid (40) adjacent to the guide-vane ring, whereby an intermediate ring (50) by a downstream front face (51) engages behind an upstream stop (61; 61?) fixed in place on the casing element, and by an upstream front face (52) of a radial flange (53) of the intermediate ring engages behind a downstream stop (22) fixed in place on the outer ring, in order to secure the guide-vane ring axially at the gas turbine casing element in the direction of through-flow.Type: GrantFiled: May 4, 2015Date of Patent: November 14, 2017Assignee: MTU AERO ENGINES AGInventors: Manfred Feldmann, Franz-Josef Ertl
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Publication number: 20150330237Abstract: The present invention relates to a gas turbine casing arrangement having a gas turbine casing element (10), a guide-vane ring with an outer ring (20), and a coated ring (30), which lies radially opposite a rotor grid (40) adjacent to the guide-vane ring, whereby an intermediate ring (50) by a downstream front face (51) engages behind an upstream stop (61; 61?) fixed in place on the casing element, and by an upstream front face (52) of a radial flange (53) of the intermediate ring engages behind a downstream stop (22) fixed in place on the outer ring, in order to secure the guide-vane ring axially at the gas turbine casing element in the direction of through-flow.Type: ApplicationFiled: May 4, 2015Publication date: November 19, 2015Inventors: Manfred Feldmann, Franz-Josef Ertl