AIRCRAFT POWERPLANT GEARBOX WITH SELECTABLE POWER COUPLERAn aircraft powerplant (20) assembly includes a gearbox (88) having a first power transfer apparatus (120) and a second power transfer apparatus (122) independent of the first power transfer apparatus…DRIVE·5d ago·2 min readFollowF02C3/107RTX CORP [US]
GAS TURBINE ENGINE WITH THIRD STREAMA gas turbine engine includes a turbomachine having a compressor section, a combustion section, and a turbine section arranged in serial flow order. The turbomachine defines an engine inlet to an inle…DRIVE·5d ago·1 min readFollowF02C3/107GEN ELECTRIC [US]
GEARED TURBOFAN WITH OVER-SPEED PROTECTIONA gas turbine engine (100) includes a fan shaft (110) rotatable about an axis (A), a fan (112) connected to the fan shaft (110), and an outer housing (114) surrounding the fan (112) to define a bypass…DRIVE·Feb 25·2 min readFollowF02C3/107RTX CORP [US]
MULTI CORE GEARED GAS TURBINE ENGINEAn aircraft propulsion system (12) includes a fan section (14) that includes a fan shaft (16) that is rotatable about a fan axis (26) and that includes a fan gear (24). The aircraft propulsion system …DRIVE·Nov 12·2 min readFollowF02C3/107RTX CORP [US]
SELECTIVE POWER DISTRIBUTION FOR AN AIRCRAFT PROPULSION SYSTEMAn assembly for an aircraft propulsion system (20) includes a compressor section (48), a combustor section (49), a turbine section (50) and a flowpath (110) extending sequentially through the compress…DRIVE·Oct 8·1 min readFollowF02C3/107RTX CORP [US]
STRADDLE MOUNTED LOW PRESSURE COMPRESSORA gas turbine engine (20) includes a fan section (22) including a fan (42) with fan blades (43). The fan section (22) drives air along a bypass flow path (B) in a bypass duct (13). A gear reduction (4…DRIVE·Sep 3·2 min readFollowF02C3/107RTX CORP [US]
TRANSMISSION AND METHOD FOR CONTROL OF BOOST SPOOLA gas turbine engine (10) includes a first spool (16) rotationally coupled to a plurality of accessories via a first gearing (224, 226) and a second spool (12) rotationally coupled to a third spool (1…DRIVE·Jul 30·1 min readFollowF02C3/107RTX CORP [US]
TRANSMISSION AND METHOD FOR CONTROL OF BOOST SPOOLA gas turbine engine (10) includes a first spool (16) associated with a primary combustor (70), a second spool (12) associated with a secondary combustor (84), and a third spool (14), each spool (12) …DRIVE·Jul 30·1 min readFollowF02C3/107RTX CORP [US]
TRANSMISSION AND METHOD FOR CONTROL OF BOOST SPOOLA gas turbine engine (10) includes a first spool (16), a second spool (12), a third spool (14), and an epicyclic differential. The epicyclic differential includes a sun gear, planet gears supported fr…DRIVE·Apr 2·1 min readFollowF02C3/107RTX CORP [US]
GEARBOXES FOR AIRCRAFT GAS TURBINE ENGINESThe present disclosure relates to gearboxes for aircraft gas turbine engines, in particular to arrangements for journal bearings such gearboxes, and to related methods of operating such gearboxes and …DRIVE·Dec 25·1 min readFollowF02C3/107ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINES HAVING CRYOGENIC FUEL SYSTEMSTurbine engine systems (200; 300; 400) and aircraft having such systems are described. The turbine engine systems (200; 300; 400) include a combustor (210; 306) arranged along a core flow path of the …DRIVE·Sep 18·2 min readFollowF02C3/107RTX CORP [US]
GEARED TURBOFAN WITH OVER-SPEED PROTECTIONA gas turbine engine (100) includes a fan shaft (110) rotatable about an axis (A), a fan (112) connected to the fan shaft (110), and an outer housing (114) surrounding the fan (112) to define a bypass…DRIVE·Apr 17·2 min readFollowF02C3/107RTX CORP [US]
GEARED TURBOFAN WITH NON-EPICYCLIC GEAR REDUCTION SYSTEMA gas turbine engine (100) comprises a fan drive turbine (46) driving a shaft (108). The shaft (108) engages a gear reduction (105). The gear reduction (105) drives a fan rotor (102) at a speed that i…DRIVE·Feb 28·1 min readFollowF02C3/107RTX CORP [US]
Electro-magnetic coupling systemAn electro-magnetic coupling system for transferring torque between a pair of coaxial spools of a gas turbine engine is provided. The system includes a first rotor rotatable with one of the spools, a …DRIVE·Nov 6·1 min readFollowF02C3/107ROLLS ROYCE PLC [GB]
A method and system for controlling a powerplant during low-load operationsThe present invention provides a system and method of operating a combined-cycle powerplant at part-load without shutting down an HRSG 110 and steam turbine 265. The present invention may apply to a p…DRIVE·Oct 16·1 min readFollowF02C3/107GEN ELECTRIC [US]
Turbofan with gear-driven compressor and fan-driven coreA gas turbine engine (10) comprises an outer engine case (12), a combustor (16), a high pressure spool (18) and a low pressure spool (20). The combustor (16) is disposed within the outer engine case (…DRIVE·Jul 17·2 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Epicyclic gear train and turbine engineAn epicyclic gear train, 22, includes a carrier, 26, that supports star gears, 32, that mesh with a sun gear, 30. A ring gear, 38, surrounds and meshes with the star gears, 32. Each of the star gears …DRIVE·Jul 3·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Gas Turbine engineA turbine engine (10) includes a fan shaft (20) and at least one tapered bearing, (80), mounted on the fan shaft. The fan shaft includes at least one radially extending passage, (82), adjacent the at …DRIVE·Jul 3·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Gas turbine engine with low stage count low pressure turbineA gas turbine engine (10) comprising: a core nacelle defined about an engine centerline axis; a fan nacelle mounted at least partially around core nacelle to define a fan bypass airflow path for a fan…DRIVE·Jul 3·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Gas turbine engine gear trainAn epicyclic gear train 22 includes a carrier 26 that supports star gears 32 that mesh with a sun gear 30. A ring gear 38 surrounds and meshes with the star gears 32. The star gears are supported on r…DRIVE·Jul 3·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Turbine engineA gas turbine engine 10 includes a first fan, a second fan spaced axially from the first fan, a turbine-driven fan shaft 26 and an epicyclic gear train 22 coupled to be driven by the turbine-driven fa…DRIVE·Jul 3·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Journal pin for gear systemA turbomachine epicyclic gear system (60) includes a sun gear (78) rotatable around an axis, a ring gear (88) radially outward of the sun gear (78), and a plurality of intermediate gears (86) meshed w…DRIVE·May 1·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Epicyclic GearboxAn epicyclic gear train (40) includes planetary gears (74) rotatably mounted on spindles (75) supported by an annular carrier (72) and including axially spaced apart forward and aft sets of output tee…DRIVE·Aug 24·2 min readFollowF02C3/107GEN ELECTRIC [US]
Reversed-flow core for a turbofan with a fan drive gear systemA gas turbine engine (10) comprises a fan drive gear system (12), a low spool (14) connected to the fan drive gear system, and a high spool (16) disposed aft of the low spool. The low spool comprises …DRIVE·Mar 16·1 min readFollowF02C3/107UNITED TECHNOLOGIES CORP [US]
Power transmission arrangementA power transmission arrangement (20) comprises a first power transmission member (24) connectable to a first main shaft (28) of an engine (10). The arrangement (20) also includes a second power trans…DRIVE·Mar 30·2 min readFollowF02C3/107ROLLS ROYCE PLC [GB]
