# US 12,000,338 B2 · Electric machine within a turbine engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,338 B2 - Document ID: US12000338B2 - Status: Granted - Kind: B2 - Application number: 17/967,360 - Filed: 2022-10-17 - Published: 2023-07-06 - Granted: 2024-06-04 - Earliest claimed: 2021-10-15 - Assignees: Rtx Corporation - Applicants: Raytheon Technologies Corporation - Inventors: Marc J. Muldoon; Russell B. Witlicki - Web page: https://patentgrep.com/patent/US12000338B2 ## CPC - F01D 15/10: Adaptations for driving, or combinations with, electric generators - F02C 6/20: Adaptations of gas-turbine plants for driving vehicles - F01D 25/04: Antivibration arrangements - F01D 25/16: Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) - F01D 25/164: {Flexible supports; Vibration damping means associated with the bearing} - F02C 7/06: Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D25/18; of machines or} engines in general F01M) - F02C 7/268: Starting drives for the rotor {, acting directly on the rotor of the gas turbine to be started} - F02C 7/275: Mechanical drives - F02C 7/32: Arrangement, mounting, or driving, of auxiliaries - F05D 2220/323: for aircraft propulsion, e.g. jet engines - F05D 2220/70: in combination with - F05D 2220/76: an electrical generator - F05D 2240/54: Radial bearings - F05D 2260/85: Starting - F05D 2260/96: Preventing, counteracting or reducing vibration or noise - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An assembly is provided for a turbine engine. This turbine engine assembly includes a stationary structure, a rotating structure and an electric machine. The rotating structure is rotatably mounted to the stationary structure by a first bearing and a second bearing. The electric machine is between the first bearing and the second bearing. The electric machine includes a rotor and a stator circumscribing the rotor. The rotor is connected to the rotating structure. The stator is connected to the stationary structure. ## Claims ### Claim 1 An assembly for a turbine engine, comprising: a stationary structure including a base support, a first leg and a second leg; a rotating structure rotatably mounted to the stationary structure by a first bearing and a second bearing; and an electric machine between the first bearing and the second bearing, the electric machine including a machine case, a rotor and a stator circumscribing the rotor, the rotor connected to the rotating structure, the stator connected to the stationary structure, and the stator and the rotor housed within the machine case; the first leg connected to and projecting out from the base support, and the first leg configured to support the first bearing; and the second leg connected to and projecting out from the base support, and the second leg configured to support the second bearing through the machine case. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the electric machine is configured as a motor during at least one mode of operation. ### Claim 3 (depends on 1) The assembly of claim 1, wherein the electric machine is configured as a generator during at least one mode of operation. ### Claim 4 (depends on 1) The assembly of claim 1, further comprising: a compressor section, a combustor section and a turbine section arranged along a rotational axis of the turbine engine; and an engine case housing the compressor section, the combustor section, the turbine section and the electric machine. ### Claim 5 (depends on 1) The assembly of claim 1, further comprising: a compressor section, a combustor section, a turbine section and a flowpath extending sequentially through the compressor section, the combustor section and the turbine section; the electric machine radially inboard of the flowpath. ### Claim 6 (depends on 1) The assembly of claim 1, wherein at least one of the first leg is connected to the base support independent of the second leg; or the second leg is connected to the base support independent of the first leg. ### Claim 7 (depends on 1) The assembly of claim 1, wherein the second leg is further configured to support the stator through the machine case. ### Claim 8 (depends on 1) The assembly of claim 1, wherein the first leg is structurally independent of the stator. ### Claim 9 (depends on 1) The assembly of claim 1, wherein the machine case is connected to and supported by the second leg; and the second bearing is connected to the machine case independent of the second leg. ### Claim 10 (depends on 1) The assembly of claim 1, further comprising at least one of: a first damper providing a first damped connection between the first bearing and the first leg; or a second damper providing a second damped connection between the second bearing and the second leg. ### Claim 11 (depends on 1) The assembly of claim 1, further comprising: a first damper arranged between the first bearing and the stationary structure; and a second damper arranged between the second bearing and the stationary structure. ### Claim 12 (depends on 1) The assembly of claim 1, wherein the stationary structure circumscribes the electric machine. ### Claim 13 (depends on 1) The assembly of claim 1, wherein the rotating structure comprises a compressor rotor, a turbine rotor and a shaft coupling the turbine rotor to the compressor rotor.