#PRATT & WHITNEY CANADA [CA]

PRESSURE REGULATING VALVE

A pressure regulating valve (22) is provided that includes a housing (24), a sleeve (30), a piston (32), an adjustment nut (34), and a piston spring (36). The housing (24) includes a sleeve bore (26).…

DRIVE·4d ago·2 min read

F02C7/06 PRATT & WHITNEY CANADA [CA]

HEAT MANAGEMENT SYSTEM AND METHOD FOR HYDROGEN-FUELED ENGINE

A heat management system (100,200) for a thermal engine (10) includes a source of hydrogen (104,204), a first hydrogen conduit (102,202) flowing a first flow of hydrogen therethrough, the first hydrog…

DRIVE·4d ago·1 min read

F02C3/22 PRATT & WHITNEY CANADA [CA]

FLAPPER VALVE FOR AIRCRAFT ENGINE

A valve assembly (20) for an aircraft engine (10) includes a base (21) defining an air opening (19) configured to receive airflow therethrough in a flow direction from an upstream side (15) to a downs…

DRIVE·4d ago·2 min read

F02C6/08 PRATT & WHITNEY CANADA [CA]

BATTERY CONTACTORS AND CONTACTOR CONTROL SYSTEMS FOR AIRCRAFT BATTERIES

A propulsion system (20) for an aircraft (1000) includes a battery (64), at least one charger contactor (106, 132, 142), a first control channel (110, 114), and a second control channel (112, 116). Th…

DRIVE·4d ago·2 min read

B60L50/66 PRATT & WHITNEY CANADA [CA]

MASTER-SLAVE HYBRID-ELECTRIC POWERTRAIN CONTROL ARCHITECTURE WITH SUPERVISORY POWER MANAGEMENT CONTROL

A method of operating a hybrid electric powertrain (HEP) (100) may include determining, based on a HEP torque demand and a maximum torque limit for a gas turbine engine (108) having a mechanical outpu…

DRIVE·4d ago·2 min read

B64D27/33 PRATT & WHITNEY CANADA [CA]

BATTERY CHARGING CONTROL SYSTEMS FOR AIRCRAFT BATTERIES

A propulsion system (20) for an aircraft (1000) includes a battery (64), an electrical distribution system (66), a charger, and a battery management system (68). The battery includes a plurality of ba…

DRIVE·4d ago·1 min read

G01R31/385 PRATT & WHITNEY CANADA [CA]

ELECTRIC AIRCRAFT PROPULSION UNIT(S) WITH MULTIPLE PROPULSOR ROTORS

An aircraft system (20) includes a first propulsor rotor (28) rotatable about an axis (38), and a second propulsor rotor (30) rotatable about the axis (38). An electric machine (32) includes a first e…

DRIVE·Jun 10·2 min read

B64C1/16 PRATT & WHITNEY CANADA [CA]

IMPENDING BYPASS INDICATOR

An impending bypass indicator (IBI) (22; 22'; 22") includes a housing (30) having a fluid inlet (24) for admitting a fluid (11) into an interior (28) of the housing (30), and a piston (34) displaceabl…

DRIVE·Jun 10·2 min read

B01D35/1435 PRATT & WHITNEY CANADA [CA]

BATTERY CONTACTORS AND CONTACTOR CONTROL SYSTEMS FOR AIRCRAFT BATTERIES

A propulsion system (20) for an aircraft (1000) includes a battery (64), an electrical distribution system (66), a first control channel (110, 114), and a second control channel (112, 116). The batter…

DRIVE·Jun 3·2 min read

B64D27/31 PRATT & WHITNEY CANADA [CA]

BATTERY MANAGEMENT SYSTEM, TEMPERATURE SENSING SYSTEMS AND METHODS

A propulsion system for an aircraft (1000) includes a battery (64), a battery management system (68), and an engine controller (28). The battery management system (68) includes a plurality of first ba…

DRIVE·Jun 3·1 min read

B60L3/0046 PRATT & WHITNEY CANADA [CA]

AIRCRAFT PROPULSION SYSTEM THERMAL MANAGEMENT SYSTEM

A propulsion system for an aircraft (20) is provided that includes a thermal engine (30), an electrical power motive system (28), a propulsion unit (40), and a thermal management system (38). The elec…

DRIVE·Jun 3·2 min read

B60H1/00342 PRATT & WHITNEY CANADA [CA]

BATTERY MONITORING SYSTEM AND METHOD

A method of monitoring a battery system (42) utilized within an aircraft propulsion system is provided that includes: providing a parallel electrical circuit having a first and second battery units (3…

DRIVE·Jun 3·2 min read

B64D31/16 PRATT & WHITNEY CANADA [CA]

WINDMILLING LOCKING METHOD AND SYSTEMS FOR GAS TURBINE ENGINES

An anti-windmilling control method for a gas turbine engine (20...600) including an engine shaft (404;610) with a rotating component and an accessory gearbox (234,236) each operably coupled to the eng…

DRIVE·Jun 3·1 min read

F01D21/00 PRATT & WHITNEY CANADA [CA]

OIL DISTRIBUTION SYSTEM FOR AIRCRAFT ENGINE WITH MAKE-UP FLOW

An oil supply system (130) for an aircraft engine (10) includes: an oil tank (32); a closed-loop oil circuit (52) including a component (22, 36), a pump (48) having a pump inlet (48A) and outlet (48B)…

DRIVE·May 27·2 min read

F01D25/20 PRATT & WHITNEY CANADA [CA]

OIL SYSTEM FOR AIRCRAFT ENGINE HAVING FEATURES TO PREVENT DRAINAGE OF COMPONENT

An aircraft engine (10) having a centerline (11) has: an oil system (28; 100) including: a component (101) located above the centerline (11) and having an inlet (101A) and an outlet (101B); an oil cir…

DRIVE·May 27·2 min read

F01D21/00 PRATT & WHITNEY CANADA [CA]

SWITCHABLE AERO ENGINE DUAL FUEL CONTROL SYSTEM WITH DHFC

A method of operating a dual fuel gas turbine engine (102) includes operating the engine (102) with a first fuel according to a first control loop (202). The method also includes while the engine (102…

DRIVE·May 27·1 min read

F02C9/40 PRATT & WHITNEY CANADA [CA]

AIRCRAFT PROPULSION SYSTEM WITH INTERMITTENT COMBUSTION ENGINE(S)

An aircraft system is provided that includes a first propulsor rotor (42A), a first transmission (106A), a second propulsor rotor (42B), a second transmission (106B) and an intermittent combustion eng…

DRIVE·May 27·1 min read

B64D27/04 PRATT & WHITNEY CANADA [CA]

BIFURCATED EXHAUST DUCT FOR HYBRID AIRCRAFT POWERPLANT

An aircraft system (20) includes a compressor section, a combustor section, a turbine section, an exhaust duct (92) and a flowpath (46). The exhaust duct (92) includes an upstream duct section (96), a…

DRIVE·May 27·1 min read

B64D27/10 PRATT & WHITNEY CANADA [CA]

APPARATUSES FOR AN AIRCRAFT POWERPLANT

A rotating structure (70) for an aircraft powerplant (20) includes a balancing device (76) and a bladed rotor. The balancing device (76) is configured to rotationally balance the rotating structure (7…

DRIVE·May 27·2 min read

F01D25/04 PRATT & WHITNEY CANADA [CA]

ASSEMBLIES FOR AN AIRCRAFT POWERPLANT AND METHOD FOR BALANCING A ROTATING STRUCTURE OF A GAS TURBINE ENGINE

An aircraft powerplant (20) assembly includes a compressor section (36), a combustor section (37), a turbine section (38), a flowpath and a rotating structure (70). The flowpath extends through the co…

DRIVE·May 27·2 min read

F01D5/027 PRATT & WHITNEY CANADA [CA]

SYSTEM AND METHOD OF OPERATING MULTI-ENGINE SYSTEM

A method of operating a multi-engine system of an helicopter includes the multi-engine system having a first turboshaft engine having a first shaft, a second turboshaft engine having a second shaft, a…

DRIVE·May 27·2 min read

F02C7/36 PRATT & WHITNEY CANADA [CA]

SYSTEM AND METHOD OF OPERATING MULTI-ENGINE SYSTEM

A method of operating a multi-engine system of an helicopter (100) includes the multi-engine system having a first turboshaft engine having a first shaft, a second turboshaft engine having a second sh…

DRIVE·May 27·2 min read

B64D27/10 PRATT & WHITNEY CANADA [CA]

ROTATABLY DRIVEN EXHAUST MIXER

A turbofan engine (10) has a bypass passage for channelling a bypass flow and a core passage for channelling a core flow around a central axis (30). An exhaust mixer arrangement (32; 32') comprises a …

DRIVE·May 13·2 min read

B01F23/14 PRATT & WHITNEY CANADA [CA]

SYSTEM AND METHOD OF OPERATING MULTI-ENGINE SYSTEM

DRIVE·May 13·2 min read

B64C27/12 PRATT & WHITNEY CANADA [CA]

DRIVE ASSEMBLY AND METHOD OF ASSEMBLY

The torque transfer assembly can have a torque shaft (48, 148, 248) rotatable around a rotation axis (46), the torque shaft (48) having a first end (50) and a second end (52) opposite the first end (5…

DRIVE·May 13·2 min read

F02C7/36 PRATT & WHITNEY CANADA [CA]

BLADE CONTAINMENT ASSEMBLY FOR A GAS TURBINE ENGINE

A blade containment assembly for a gas turbine engine (10) comprises a casing (15) having a first casing member (15a) surrounding a set of rotor blades (14c) and a second casing member (15b) extending…

DRIVE·May 13·1 min read

F01D21/045 PRATT & WHITNEY CANADA [CA]

AIRCRAFT ENGINE, GAS TURBINE INTAKE THEREFORE, AND METHOD OF GUIDING EXHAUST GASSES

A gas turbine intake (16) has a swirl housing (42) having a tangential inlet (58) fluidly connecting an exhaust conduit, an annular outlet (52) defined around a central axis (36) and fluidly connectin…

DRIVE·May 6·2 min read

F01D13/02 PRATT & WHITNEY CANADA [CA]

METHOD AND APPARATUS FOR MEASURING COMPRESSOR BLEED FLOW

A gas turbine engine includes a compressor, an annular casing (44) surrounding the compressor, and a bleed flow adapter (56) mounted to an exterior side of the annular casing (44). The annular casing …

DRIVE·May 6·2 min read

F01D17/08 PRATT & WHITNEY CANADA [CA]

ENGINE EXHAUST REVERSE FLOW PREVENTION

A cover (40) system selectively allows a gas flow through a heat exchanger duct upstream of an exhaust duct (30) in an aircraft engine (10). A fluid is at a first pressure during an engine (10) operat…

DRIVE·Apr 29·2 min read

F02C6/08 PRATT & WHITNEY CANADA [CA]

GASEOUS FUEL LEAKAGE FROM FUEL SYSTEM MANIFOLD TO ENGINE

There are describes methods and systems for operating an engine coupled to a fuel system (120) having a fuel manifold (200) configured to supply fuel to a combustor (16) of the engine (100). The metho…

DRIVE·Apr 29·1 min read

F02C3/22 PRATT & WHITNEY CANADA [CA]

LUBRICATION SYSTEM WITH PUMP FEED FROM DE-AERATOR

An aircraft engine lubrication system (30) for an aircraft engine (20) having a first component and a second component is provided. The system (30) includes a lubricant tank (32), a first pump (36), a…

DRIVE·Apr 29·1 min read

F01M1/10 PRATT & WHITNEY CANADA [CA]

AIRCRAFT POWER PLANT WITH HYDROGEN TURBO-EXPANDER

A method of operating an aircraft power plant (112) includes: driving a load (16) onboard an aircraft with a combustion engine (14); heating a solid metal hydride (34) onboard the aircraft to cause hy…

DRIVE·Apr 29·1 min read

F02C3/04 PRATT & WHITNEY CANADA [CA]

GAS TURBINE ENGINE AND METHOD OF OPERATION

A gas turbine engine (10; 110; 310; 510) has an engine core (11; 111; 311; 528A); a core output shaft (34) drivable by the engine core (11...528A); a power output shaft (26; 126; 326; 526); an auxilia…

DRIVE·Apr 29·1 min read

F01D13/003 PRATT & WHITNEY CANADA [CA]

INERTIAL PARTICLE SEPARATOR DUCT ASSEMBLY WITH SPLITTER

An inertial particle separator (IPS) duct assembly (20) has a duct (22) having an inlet section (23) extending downstream from an intake flow opening (26) for receiving airflow to a junction (27), a s…

DRIVE·Apr 22·2 min read

B01D45/04 PRATT & WHITNEY CANADA [CA]

OIL SYSTEM WITH FLOW RESTRICTOR

An oil system (28), has: a pump (32) driving an oil flow (F1) in an oil conduit (33), the pump (32) having an outlet pump pressure; a heat exchanger (41, 42) providing heat exchange between the oil fl…

DRIVE·Apr 22·2 min read

F02C7/06 PRATT & WHITNEY CANADA [CA]

EPICYCLIC GEAR TRAIN OF AIRCRAFT POWERPLANT

An epicyclic gear train (12) of an aircraft powerplant includes a sun gear (32) having a rotation axis (RA), a ring gear (34), a plurality of intermediate gears (36) circumscribed by the ring gear (34…

DRIVE·Apr 15·1 min read

B64D27/10 PRATT & WHITNEY CANADA [CA]

GAS TURBINE ENGINE OIL SCOOP WITH AIR SEPARATOR

A gas turbine engine (20) includes a turbine (30, 36) for driving a shaft (28, 38) to in turn drive a rotor (26, 22). A combustor (34) receives compressed air, and combusts the compressed air. The sha…

DRIVE·Apr 15·2 min read

F01D25/16 PRATT & WHITNEY CANADA [CA]

ROTARY ENGINE ROTOR AND METHOD

A rotary engine rotor (32) and a method for supplying rotary engine rotors (32) are provided. The rotary engine rotor (32) has a center axis (44), a rotor body (40), a plurality of peripheral surfaces…

DRIVE·Apr 15·1 min read

F01C1/22 PRATT & WHITNEY CANADA [CA]

LOADED BEARING SYSTEM

A bearing system (20) for supporting a shaft (18), comprising: a bearing (30) including: an inner race (32b) about an axis (A), the inner race (32b) having an interior coupled to the shaft (18); rolli…

DRIVE·Apr 8·2 min read

F01D25/16 PRATT & WHITNEY CANADA [CA]

COMBUSTOR WITH TANGENTIAL FUEL AND AIR FLOW

A combustor (100) includes a liner (102) defining a combustion chamber (105), and receiving an air and fuel mixing body (104). The mixing body (104) includes a forward face (114) facing into the combu…

DRIVE·Apr 1·1 min read

F23D14/24 PRATT & WHITNEY CANADA [CA]