Abstract: In a flange cooling structure of a gas turbine engine, one of a first flange and a second flange is a high pressure flange that faces a first region, and the other of the first flange and the second flange is a low pressure flange that faces a second region. A contact surface of the high pressure flange or a contact surface of the low pressure flange includes a cooling groove that communicates with the first region and the second region.

Abstract: A gas turbine engine according to one aspect of the present invention includes: an oil tank storing lubricating oil; and a cylindrical external case accommodating a compressor, a combustor, and a turbine. The oil tank is arranged along an outer peripheral surface of the external case so as to surround the external case.

Abstract: A gas turbine engine includes: a casing that accommodates a compressor, a combustor, and a turbine; an electric power generator arranged inside the casing and driven by a rotating shaft; an electric power line through which electric power generated by the electric power generator is supplied to an outside of the outer shell; and an electrically-operated accessory that is arranged at an outside of the casing, is driven by the electric power supplied from the electric power line, and includes an electrically-operated fuel pump.

Abstract: A gas turbine engine includes: a fan that is in front of a compressor and rotates in association with a rotating shaft; a casing including an inner shell and an outer shell and a bypass passage; bearings inside the inner shell; an oil mist generator that is outside the outer shell and generates oil mist by mixing oil with compressed air extracted through an extraction port of the compressor; an air pipe through which the compressed air extracted from the compressor is guided to the oil mist generator; and an oil mist pipe through which the oil mist generated by the oil mist generator is guided to the bearings. At least one of the air pipe and the oil mist pipe includes a heat exchanger that is in the bypass passage and is cooled by the air flowing through the bypass passage.

Abstract: A gas turbine engine includes: a casing that accommodates a compressor and the like; bearings; a main lubricator including an oil mist generator that generates oil mist by mixing oil with compressed air extracted from the compressor and a first supply passage through which the oil mist is guided to the bearings; and a starting lubricator including a second supply passage through which a gas flowing out from a gas source is guided to a connection portion of the first supply passage, the connection portion being connected to the second supply passage, and an opener that starts supply of the gas from the gas source. The main lubricator supplies the oil mist to the bearings through the first supply passage by the pressure of the compressed air extracted from the compressor. When the opener starts the supply of the gas, the starting lubricator supplies the oil mist to the bearings by the pressure of the gas flowing out from the gas source.

Abstract: Provided is a gas turbine engine including a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that supplies oil to the main passage. The oil supply device includes a pressure reducer in the main passage; an oil tank a divider that is movable and divides an internal space of the container into an oil chamber storing the oil and an air chamber; an extruder including a cylinder and a piston that divides an internal space of the cylinder into a first chamber and a second chamber; a switching mechanism that switches between a first state where the first chamber communicates with a low-pressure space whose pressure is lower than pressure in the air chamber and a second state where the first chamber communicates with a high-pressure space whose pressure is higher than pressure in the downstream passage.

Abstract: A gas turbine engine includes: a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that includes an oil tank storing oil and supplies the oil to the main passage through which the compressed air flows to generate oil mist. The oil supply device includes: a pressure reducer disposed at the main passage; a bypass passage that bypasses the pressure reducer and connects an upstream passage and a downstream passage; a holding chamber disposed at the bypass passage and having a predetermined volume; a switching mechanism that permits or blocks communication between the holding chamber and the oil tank, communication between the holding chamber and the upstream passage, and communication between the holding chamber and the downstream passage; and a controller that controls the switching mechanism.

Abstract: In a flange cooling structure of a gas turbine engine, one of a first flange and a second flange is a high pressure flange that faces a first region, and the other of the first flange and the second flange is a low pressure flange that faces a second region. A contact surface of the high pressure flange or a contact surface of the low pressure flange includes a cooling groove that communicates with the first region and the second region.

Abstract: A gas turbine engine according to one aspect of the present invention includes: an oil tank storing lubricating oil; and a cylindrical external case accommodating a compressor, a combustor, and a turbine. The oil tank is arranged along an outer peripheral surface of the external case so as to surround the external case.

Abstract: A gas turbine engine includes: at least one fuel pump arranged outside a casing; at least one electric motor that is arranged outside the casing and drives the at least one fuel pump; a fuel inflow member including a fuel inflow passage through which fuel to be sucked by the fuel pump flows; and a fuel outflow member including a fuel outflow passage through which the fuel discharged from the fuel pump flows toward a combustor. The fuel inflow member includes a heat exchanger portion that is thermally connected to the electric motor. The heat exchanger portion is adjacent to the electric motor and cools the electric motor by heat exchange between the electric motor and the fuel flowing through the heat exchanger portion.

Abstract: A gas turbine engine in which a compressor, a combustor, and a turbine are arranged so as to be lined up along a rotating shaft includes: a casing that accommodates the compressor, the combustor, and the turbine; fuel pump units that are arranged at an outside of the casing, are lined up in a circumferential direction along an outer peripheral surface of the casing, and are connected in parallel; and a fuel supply pipe that collects fuel discharged from the fuel pump units and supplies the fuel to the combustor.

Abstract: A gas turbine engine includes: a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that includes an oil tank storing oil and supplies the oil to the main passage through which the compressed air flows to generate oil mist. The oil supply device includes: a pressure reducer disposed at the main passage; a bypass passage that bypasses the pressure reducer and connects an upstream passage and a downstream passage; a holding chamber disposed at the bypass passage and having a predetermined volume; a switching mechanism that permits or blocks communication between the holding chamber and the oil tank, communication between the holding chamber and the upstream passage, and communication between the holding chamber and the downstream passage; and a controller that controls the switching mechanism.

Abstract: Provided is a gas turbine engine including a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that supplies oil to the main passage. The oil supply device includes a pressure reducer in the main passage; an oil tank a divider that is movable and divides an internal space of the container into an oil chamber storing the oil and an air chamber; an extruder including a cylinder and a piston that divides an internal space of the cylinder into a first chamber and a second chamber; a switching mechanism that switches between a first state where the first chamber communicates with a low-pressure space whose pressure is lower than pressure in the air chamber and a second state where the first chamber communicates with a high-pressure space whose pressure is higher than pressure in the downstream passage.

Abstract: A gas turbine engine includes: a fan that is arranged in front of a compressor and rotates in association with a rotating shaft; a casing including an inner shell accommodating the compressor, a combustor, and a turbine, and an outer shell arranged such that a bypass passage through which part of air supplied by the fan flows exists between the inner shell and the outer shell; bearings arranged inside the inner shell; an oil mist generator that is arranged outside the outer shell and generates oil mist by mixing oil with compressed air extracted through an extraction port of the compressor; an air pipe through which the compressed air extracted from the compressor is guided to the oil mist generator; and an oil mist pipe through which the oil mist generated by the oil mist generator is guided to the bearings. At least one of the air pipe and the oil mist pipe includes a heat exchanger that is arranged in the bypass passage and is cooled by the air flowing through the bypass passage.

Abstract: A gas turbine engine includes: a casing that accommodates a compressor and the like; bearings; a main lubricator including an oil mist generator that generates oil mist by mixing oil with compressed air extracted from the compressor and a first supply passage through which the oil mist is guided to the bearings; and a starting lubricator including a second supply passage through which a gas flowing out from a gas source is guided to a connection portion of the first supply passage, the connection portion being connected to the second supply passage, and an opener that starts supply of the gas from the gas source. The main lubricator supplies the oil mist to the bearings through the first supply passage by the pressure of the compressed air extracted from the compressor. When the opener starts the supply of the gas, the starting lubricator supplies the oil mist to the bearings by the pressure of the gas flowing out from the gas source.

Abstract: A gas turbine engine includes: a casing that accommodates a compressor, a combustor, and a turbine; an electric power generator arranged inside the casing and driven by a rotating shaft; an electric power line through which electric power generated by the electric power generator is supplied to an outside of the outer shell; and an electrically-operated accessory that is arranged at an outside of the casing, is driven by the electric power supplied from the electric power line, and includes an electrically-operated fuel pump.