PYLON SHAPE WITH GEARED TURBOFAN FOR STRUCTURAL STIFFNESSA gas turbine includes a mounting structure for mounting the engine to a pylon. A propulsor section includes a fan having a fan diameter. A geared architecture drives the fan. A generator section incl…DRIVE·Oct 11·1 min readFollowB64D27/12UNITED TECHNOLOGIES CORP [US]
A COOLING SYSTEM COMPRISING AN EXHAUST DISTRIBUTION MANIFOLDA cooling system (100) for a gas turbine engine (20) may comprise a heat exchanger (104) configured to receive a cooling airflow. The heat exchanger (104) may receive the cooling flow at a cooling flo…DRIVE·Sep 27·1 min readFollowF02C7/141UNITED TECHNOLOGIES CORP [US]
FUEL COOLED COOLING AIRA gas turbine engine (100) includes a main compressor section (101) having a downstream most location (110), a cooling air tap (112) at a location upstream of the downstream most location (110), and a…DRIVE·Sep 6·1 min readFollowF02C6/08UNITED TECHNOLOGIES CORP [US]
SPLASH RESISTANT OIL TANK FILL TUBEA fill tube (240; 340) for an oil tank (201) may have at least one baffle (345, 346, 347) coupled to an inner wall (348) of the fill tube (240; 340). A first baffle (345) may have an aperture (415). A…DRIVE·Aug 24·2 min readFollowB60K15/0406UNITED TECHNOLOGIES CORP [US]
MODEL-BASED OPTIMAL CONTROL FOR STALL MARGIN LIMIT PROTECTION IN AN AIRCRAFT ENGINEA control system (40) for a gas turbine engine (10), a method for controlling a gas turbine engine (10), and a gas turbine engine (10) are disclosed. The control system (40) may include a hybrid model…DRIVE·Dec 9·2 min readFollowB60T7/12UNITED TECHNOLOGIES CORP [US]
THERMALLY COMPLIANT GROMMET ASSEMBLYA thermally compliant grommet assembly 101 for a combustor includes first 80;82 and second 76;78 shells spaced apart from one another and a grommet 201 having a tubular portion 126 projecting into a h…DRIVE·Oct 7·2 min readFollowB60R16/0215UNITED TECHNOLOGIES CORP [US]
Method for setting a gear ratio of a fan drive gear system of a gas turbine engineA gas turbine engine (20) comprises a fan section (22) including a fan (36) rotatable about an axis and a speed reduction device in communication with the fan (36). The speed reduction device (45) inc…DRIVE·Aug 6·1 min readFollowF02C7/36UNITED TECHNOLOGIES CORP [US]
FAN CASE ASSEMBLYA turbine engine fan case assembly includes a structural case (100) and a liner assembly (140). A radially accommodating attachment system connects the liner assembly (140) to the structural case (100…DRIVE·Aug 7·1 min readFollowF01D11/122UNITED TECHNOLOGIES CORP [US]
Bevel gear arrangement for axial accessory gearboxAn accessory box (200) for a gas turbine engine (10) has an input gear (72) to be driven by an input shaft (70). The input gear (72) is engaged to drive a first driven gear (75) on one radial side of …DRIVE·Jul 31·2 min readFollowF02C7/32UNITED TECHNOLOGIES CORP [US]
Gas turbine engine accessory gearboxAn accessory gearbox (60) for a gas turbine engine has a main gearbox housing (188) for receiving a plurality of gears (66) to drive a plurality of accessories. An input shaft (181) has a first bevel …DRIVE·Jul 24·1 min readFollowF02C7/32UNITED TECHNOLOGIES CORP [US]
Gas turbine engine with pylon mounted accessory driveA gas turbine engine (10) includes an accessory gearbox (60) within an engine pylon (P). The accessory components (66) may be mounted within the engine pylon (P) to save weight and space within the co…DRIVE·Jul 24·1 min readFollowF02C7/32UNITED TECHNOLOGIES CORP [US]
Article including ceramic structureAn article which includes a structure of a ceramic material that has a composition SiO x M z C y , where Si is silicon, O is oxygen, M is at least one metal and C is carbon and wherein x < 2, y > 0 an…DRIVE·Jul 24·1 min readFollowC04B35/5603UNITED TECHNOLOGIES CORP [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]
Stator Vane Integrated Attachment Liner and Spring DamperA stator subassembly (121) includes an array of circumferentially arranged stator vanes (29). An attachment liner (100, 102) secures the stator vanes (29) to one another to provide the subassembly (12…DRIVE·Jul 10·1 min readFollowF01D25/24UNITED TECHNOLOGIES CORP [US]
Environmental control system for aircraft utilizing turbo-compressorAn environmental control system (30) includes a higher pressure tap (134) to be associated with a higher compression location (134) in a main compressor section (254) associated with a gas turbine eng…DRIVE·Jul 10·2 min readFollowB64D13/04UNITED 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]
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]
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]
Energy-absorbing fan case for a gas turbine engineA fan case (72) of a gas turbine engine includes a fan blade containment section (78) defined about an engine axis (A) and a plurality of helical ribs (92) adjacent to the fan blade containment sectio…DRIVE·Jun 19·1 min readFollowF01D21/045UNITED TECHNOLOGIES CORP [US]
Turbomachine component machining methodAn component manufacturing method includes scanning a first surface (58) of a component (50) to determine a location of pocket surfaces (78) of the first surface (58). The method machines apertures (6…DRIVE·Jun 5·1 min readFollowB23K26/389UNITED TECHNOLOGIES CORP [US]
TurbomachineAn exemplary turbomachine securing apparatus includes a coupling member (70) that couples a first component (50) to a second component (60) within a turbomachine. The first component (50) and the seco…DRIVE·May 29·1 min readFollowF01D25/16UNITED TECHNOLOGIES CORP [US]
Flexible seal system for a gas turbine engineA flexible seal system (16) for a gas turbine engine (10) includes an annular mounting bracket (92), an annular support bracket (96), an annular flexible seal (40) and a plurality of mounting spacers …DRIVE·May 22·1 min readFollowF02C7/28UNITED TECHNOLOGIES CORP [US]
A fluid flow system and method of managing said fluid flowA rocket engine fluid-flow system (10) includes a pump (16) fluidly interconnecting a fluid source (12) to a combustion chamber (36). A nozzle (15) is in fluid communication with the combustion chambe…DRIVE·May 22·2 min readFollowF02K9/566UNITED TECHNOLOGIES CORP [US]
Gas turbine engine compressor arrangementA gas turbine engine (90) includes a low pressure compressor section (18) and a high pressure compressor section (22). A low pressure turbine (34) drives the low pressure compressor section (18). A ge…DRIVE·May 15·1 min readFollowF01D13/003UNITED TECHNOLOGIES CORP [US]
Aircraft jet engine system for optimizing power usage from damaged fan blades and corresponding methodAn aircraft jet engine system includes at least one gas turbine engine (10) having a fan (14) including a rotor and a plurality of fan blades (100). A sensor system (102, 104) in the fan section (14) …DRIVE·May 8·2 min readFollowF01D17/02UNITED TECHNOLOGIES CORP [US]
Hollow fan blade tuning using distinct filler materials and method of designing such a fan bladeA fan blade (20) comprises a main body extending between a leading edge (21) and a trailing edge (22). Channels (30) are formed into the main body, with a plurality of ribs (26) extending intermediate…DRIVE·May 8·1 min readFollowF01D5/18UNITED TECHNOLOGIES CORP [US]
Gas turbine engine with intercooling turbine section and intercooling turbine section bypassA gas turbine engine (10) includes an intercooling turbine section (24A) to at least partially drive one of a low spool (42') and a high spool (46'). An intercooling turbine section bypass is provided…DRIVE·May 1·1 min readFollowF02C7/143UNITED TECHNOLOGIES CORP [US]
Blind retention mountA mount assembly (10) includes a main body (18), a bayonet (22), and a block (20). The bayonet is movable relative the main body to insert a portion of the bayonet into an internal cavity (26) of the …DRIVE·May 1·1 min readFollowF01D25/24UNITED TECHNOLOGIES CORP [US]
Gas turbine engine with auxiliary fanA method of operating a propulsion system (14) includes powering an auxiliary fan (18) with a gas turbine engine (20), where the auxiliary fan (18) is along an auxiliary axis (F) and the gas turbine e…DRIVE·May 1·1 min readFollowF02C3/10UNITED TECHNOLOGIES CORP [US]
Gas turbine engine thermal management systemA thermal management system (100) for a gas turbine engine (20) includes a first heat exchanger (66) that provides a first conditioned fluid (83), a second heat exchanger (68) in series flow communica…DRIVE·May 1·2 min readFollowF02C7/08UNITED TECHNOLOGIES CORP [US]
Variable width gap sealA seal (10;94;170) for bridging an interface (16;100;176) between an aircraft exhaust deck (14;98;174) and a trailing edge (12;96;172) of an aircraft exhaust system includes a sheet (42;122;196), a sp…DRIVE·May 1·1 min readFollowF02K1/805UNITED 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]
Injector having Multiple Impingement LengthsAn injector (22) includes an injector body (40) that has at least an injection side surface (32). A plurality of passages (50) extends within the injector body (40) for injecting combustion fluids at …DRIVE·May 1·1 min readFollowF02K9/52UNITED TECHNOLOGIES CORP [US]
Split accessory drive systemA gas turbine engine (10) includes a spool (20), a first accessory gearbox (54), a second accessory gearbox (68), and a scavenge pump (64). The first accessory gearbox is connected to and driven by th…DRIVE·Apr 24·1 min readFollowF01D25/18UNITED TECHNOLOGIES CORP [US]
Gas turbine engine and method of disassemblyA gas turbine engine includes a central body support (62) that provides an inner annular wall for a core flow path. The central body support (62) includes first splines (78). A geared architecture (48…DRIVE·Apr 24·1 min readFollowF01D25/162UNITED TECHNOLOGIES CORP [US]
Gas turbine engine with integrated thermal management systemA gas turbine engine (20) includes a first (86) and second (90) pump driven by a spool (30). An air-oil cooler (88) is located downstream of the first pump (86). An air-air precooler (92) is located d…DRIVE·Apr 24·1 min readFollowB64D13/06UNITED TECHNOLOGIES CORP [US]
Compartment cooling for a gas turbine engineA gas turbine engine includes a first pump (86) driven by a spool (30), an air-oil cooler (88) downstream of the first pump (86), a second pump (90) driven by the spool (30) and an air-air precooler (…DRIVE·Apr 24·1 min readFollowF02C6/08UNITED TECHNOLOGIES CORP [US]
Strut rods for structural guide vanesA reinforced structural guide vane system includes an outer casing (32); a center body (34) within the outer casing; a plurality of structural guide vanes (28) extending between and connected to the c…DRIVE·Apr 10·1 min readFollowF01D25/246UNITED TECHNOLOGIES CORP [US]
