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F05D2250/231

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FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F05Engines, pumps F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS F05D2250/00Geometry

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F05D2250/231cylindrical

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Patents Grantslast 30 patents

Information Patent Grant
Heat shield for a supercharging device
- Patent number 12,049,829
- Issue date Jul 30, 2024
- BorgWarner Inc.
- Daniel Geisweid
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Rocket propellant tank arrangement, rocket propulsion unit, and rocket
- Patent number 12,000,361
- Issue date Jun 4, 2024
- ORBITAL EXPRESS LAUNCH LIMITED
- Jonas Baekby Bjarnoe
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Apparatus for oil lubrication of a rotationally fixed connection be...
- Patent number 11,939,917
- Issue date Mar 26, 2024
- Rolls-Royce Deutschland Ltd & Co KG
- Jürgen Beier
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Pin member for turbine
- Patent number 11,788,435
- Issue date Oct 17, 2023
- CUMMINS LTD.
- Simon David Moore
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine blade comprising ribs between cooling outlets with cooling...
- Patent number 11,753,945
- Issue date Sep 12, 2023
- SAFRAN AIRCRAFT ENGINES
- Léandre Ostino
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Bleed air offtake assembly for a gas turbine engine
- Patent number 11,732,645
- Issue date Aug 22, 2023
- Pratt & Whitney Canada Corp.
- Eric Durocher
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Centralized oil distribution system
- Patent number 11,732,647
- Issue date Aug 22, 2023
- Daniella Sladen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Turbine engine comprising a rotor with variable-pitch blades
- Patent number 11,719,107
- Issue date Aug 8, 2023
- SAFRAN AIRCRAFT ENGINES
- Sébastien Emile Philippe Tajan
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Connector and an anti thermal mismatch connecting device
- Patent number 11,692,460
- Issue date Jul 4, 2023
- AECC COMMERCIAL AIRCRAFT ENGINE CO., LTD.
- Hongbao Guo
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Fuel injection assembly for a turbomachine
- Patent number 11,668,242
- Issue date Jun 6, 2023
- General Electric Company
- Clay Thomas Griffis
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Bypass turbomachine
- Patent number 11,649,738
- Issue date May 16, 2023
- SAFRAN AIRCRAFT ENGINES
- Antonin Etienne Diego Tessiereau
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Preform crossovers for composite airfoils
- Patent number 11,608,748
- Issue date Mar 21, 2023
- Raytheon Technologies Corporation
- Howard J. Liles
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Combustor component, combustor, gas turbine, and manufacturing meth...
- Patent number 11,536,455
- Issue date Dec 27, 2022
- Mitsubishi Heavy Industries, Ltd.
- Kentaro Tokuyama
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electric power dissipater for electrically-actuated turbocharger
- Patent number 11,512,626
- Issue date Nov 29, 2022
- BorgWarner, Inc.
- Lathom Alexander Louco
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Mechanical reduction gear for aircraft turbomachine
- Patent number 11,492,979
- Issue date Nov 8, 2022
- SAFRAN TRANSMISSION SYSTEMS
- Guillaume Julien Beck
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Thermal barrier coating with reduced edge crack initiation stress a...
- Patent number 11,492,974
- Issue date Nov 8, 2022
- Raytheon Technologies Corporation
- Christopher W. Strock
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Rotor assembly and rotating machine
- Patent number 11,466,570
- Issue date Oct 11, 2022
- Mitsubishi Heavy Industries Aero Engines, Ltd.
- Masayuki Tomii
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine engine comprising a rotor supporting variable-pitch blades
- Patent number 11,396,821
- Issue date Jul 26, 2022
- SAFRAN AIRCRAFT ENGINES
- Sébastien Emile Philippe Tajan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Seal assembly between a transition duct and a first stage vane stru...
- Patent number 11,359,547
- Issue date Jun 14, 2022
- Siemens Energy Global GmbH & Co. KG
- Dustin C. Boudin
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Method for real-time simultaneous and calibrated additive and subtr...
- Patent number 11,253,922
- Issue date Feb 22, 2022
- General Electric Company
- Brandon Holford
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Blade to stator heat shield interface in a gas turbine
- Patent number 11,255,212
- Issue date Feb 22, 2022
- ANSALDO ENERGIA SWITZERLAND AG
- Martin Schnieder
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Trailing edge cooling for a turbine blade
- Patent number 11,208,901
- Issue date Dec 28, 2021
- General Electric Company
- Ronald Scott Bunker
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Compressor and gas turbine including the same
- Patent number 11,162,373
- Issue date Nov 2, 2021
- Junhyuk Seo
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Stacking of rotor blades on centroids
- Patent number 11,125,088
- Issue date Sep 21, 2021
- MTU Aero Engines AG
- Carsten Schoenhoff
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Turbine wheel assembly with pinned ceramic matrix composite blades
- Patent number 10,934,861
- Issue date Mar 2, 2021
- Rolls-Royce plc
- Sachin Dhiwar
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Gas turbine blade
- Patent number 10,927,681
- Issue date Feb 23, 2021
- Doosan Heavy Industries Construction Co., Ltd.
- Ki Don Lee
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Ribbed pin fins
- Patent number 10,907,480
- Issue date Feb 2, 2021
- RAYTHEON TECHNOLOGIES CORPORATION
- Benjamin Heneveld
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Exhaust diffuser
- Patent number 10,851,676
- Issue date Dec 1, 2020
- Kawasaki Jukogyo Kabushiki Kaisha
- Takuya Ikeguchi
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Leading edge hybrid cavities and cores for airfoils of gas turbine...
- Patent number 10,830,049
- Issue date Nov 10, 2020
- Raytheon Technologies Corporation
- Carey Clum
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Compressor bleed cooling system for mid-frame torque discs downstre...
- Patent number 10,830,146
- Issue date Nov 10, 2020
- Siemens Aktiengesellschaft
- Yan Yin
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

Information Patent Application
EXHAUST NOZZLE AND A METHOD OF OPERATING AN EXHAUST NOZZLE
- Publication number 20240175408
- Publication date May 30, 2024
- Rolls-Royce plc
- Jack F. COLEBROOKE
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
HEAT SHIELD FOR A SUPERCHARGING DEVICE
- Publication number 20240125250
- Publication date Apr 18, 2024
- BorgWarner Inc.
- Daniel Geisweid
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
ASYMMETRIC HEAT TRANSFER MEMBER FILLET TO DIRECT COOLING FLOW
- Publication number 20240044255
- Publication date Feb 8, 2024
- Jaime G. Ghigliotty Rosado
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
MACHINE AND METHOD FOR VACCUUM-ASSISTED SERVICING OF A FLUID ENCLOSURE
- Publication number 20230193905
- Publication date Jun 22, 2023
- Red Dog International L.P.
- Oscar T. Scott
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
TURBINE BLADE COMPRISING RIBS BETWEEN COOLING OUTLETS WITH COOLING...
- Publication number 20230098861
- Publication date Mar 30, 2023
- SAFRAN AIRCRAFT ENGINES
- Léandre OSTINO
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
APPARATUS FOR OIL LUBRICATION OF A ROTATIONALLY FIXED CONNECTION BE...
- Publication number 20230025047
- Publication date Jan 26, 2023
- ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
- Jürgen BEIER
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
CARTRIDGE TIP FOR TURBOMACHINE COMBUSTOR
- Publication number 20230022306
- Publication date Jan 26, 2023
- GENERAL ELECTRIC COMPANY
- Dana Morgan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
BLEED AIR OFFTAKE ASSEMBLY FOR A GAS TURBINE ENGINE
- Publication number 20230008514
- Publication date Jan 12, 2023
- Pratt & Whitney Canada Corp.
- Eric Durocher
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Pin Member for Turbine
- Publication number 20220403757
- Publication date Dec 22, 2022
- Cummins Ltd
- Simon David Moore
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
PREFORM CROSSOVERS FOR COMPOSITE AIRFOILS
- Publication number 20220389822
- Publication date Dec 8, 2022
- Raytheon Technologies Corporation
- Howard J. Liles
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Application
ASSEMBLY FOR A TURBINE ENGINE
- Publication number 20220389874
- Publication date Dec 8, 2022
- SAFRAN AIRCRAFT ENGINES
- Patrick Jean Laurent SULTANA
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
A CONNECTOR AND AN ANTI THERMAL MISMATCH CONNECTING DEVICE
- Publication number 20220341348
- Publication date Oct 27, 2022
- AECC COMMERCIAL AIRCRAFT ENGINE CO., LTD.
- Hongbao GUO
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
AIRCRAFT PROPULSION SYSTEM WITH VARIABLE AREA INLET ASSEMBLY
- Publication number 20220235700
- Publication date Jul 28, 2022
- Timothy Gormley
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
SEAL ASSEMBLY BETWEEN A TRANSITION DUCT AND A FIRST STAGE VANE STRU...
- Publication number 20220195943
- Publication date Jun 23, 2022
- Siemens Energy Global GmbH & Co. KG
- Dustin C. Boudin
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
CENTRALIZED OIL DISTRIBUTION SYSTEM
- Publication number 20220178304
- Publication date Jun 9, 2022
- Daniella Sladen
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
Compact Airfoil Bleed-Air Re-circulation Heat Exchanger
- Publication number 20220145800
- Publication date May 12, 2022
- Solar Turbines Incorporated
- James B. Peffley
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ROTOR ASSEMBLY AND ROTATING MACHINE
- Publication number 20220112810
- Publication date Apr 14, 2022
- MITSUBISHI HEAVY INDUSTRIES AERO ENGINES, LTD.
- Masayuki TOMII
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
FUEL INJECTION ASSEMBLY FOR A TURBOMACHINE
- Publication number 20220099027
- Publication date Mar 31, 2022
- GENERAL ELECTRIC COMPANY
- Clay Thomas Griffis
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
MECHANICAL REDUCTION GEAR FOR AIRCRAFT TURBOMACHINE
- Publication number 20210388769
- Publication date Dec 16, 2021
- Safran Transmission Systems
- Guillaume Julien BECK
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TURBINE ENGINE COMPRISING A ROTOR WITH VARIABLE-PITCH BLADES
- Publication number 20210381388
- Publication date Dec 9, 2021
- SAFRAN AIRCRAFT ENGINES
- Sébastien Emile Philippe Tajan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ELECTRIC POWER DISSIPATER FOR ELECTRICALLY-ACTUATED TURBOCHARGER
- Publication number 20210348549
- Publication date Nov 11, 2021
- BorgWarner Inc.
- Lathom Alexander Louco
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
BYPASS TURBOMACHINE
- Publication number 20210317755
- Publication date Oct 14, 2021
- SAFRAN AIRCRAFT ENGINES
- Antonin Etienne Diego TESSIEREAU
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
COMBUSTOR COMPONENT, COMBUSTOR, GAS TURBINE, AND MANUFACTURING METH...
- Publication number 20210302017
- Publication date Sep 30, 2021
- Mitsubishi Power, Ltd.
- Kentaro TOKUYAMA
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GAS TURBINE BLADE
- Publication number 20200300096
- Publication date Sep 24, 2020
- DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
- Ki Don LEE
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
RIBBED PIN FINS
- Publication number 20200102839
- Publication date Apr 2, 2020
- United Technologies Corporation
- Benjamin Heneveld
- B33 - ADDITIVE MANUFACTURING TECHNOLOGY
Information Patent Application
TURBINE WHEEL ASSEMBLY WITH PINNED CERAMIC MATRIX COMPOSITE BLADES
- Publication number 20200080431
- Publication date Mar 12, 2020
- Rolls-Royce plc
- Sachin Dhiwar
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ANGLED IMPINGEMENT INSERTS WITH COOLING FEATURES
- Publication number 20200024987
- Publication date Jan 23, 2020
- GENERAL ELECTRIC COMPANY
- Ronald Scott Bunker
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
ROCKET PROPELLANT TANK ARRANGEMENT, ROCKET PROPULSION UNIT, AND ROCKET
- Publication number 20190360431
- Publication date Nov 28, 2019
- Orbital Express Launch Limited
- Jonas BAEKBY BJARNOE
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TRAILING EDGE COOLING FOR A TURBINE BLADE
- Publication number 20190316473
- Publication date Oct 17, 2019
- GENERAL ELECTRIC COMPANY
- Ronald Scott Bunker
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
BLADED ROTOR WITH INTEGRATED GEAR FOR GAS TURBINE ENGINE
- Publication number 20190234228
- Publication date Aug 1, 2019
- Pratt & Whitney Canada Corp.
- Enzo MACCHIA
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

cylindrical

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Heat shield for a supercharging device

Rocket propellant tank arrangement, rocket propulsion unit, and rocket

Apparatus for oil lubrication of a rotationally fixed connection be...

Pin member for turbine

Turbine blade comprising ribs between cooling outlets with cooling...

Bleed air offtake assembly for a gas turbine engine

Centralized oil distribution system

Turbine engine comprising a rotor with variable-pitch blades

Connector and an anti thermal mismatch connecting device

Fuel injection assembly for a turbomachine

Bypass turbomachine

Preform crossovers for composite airfoils

Combustor component, combustor, gas turbine, and manufacturing meth...

Electric power dissipater for electrically-actuated turbocharger

Mechanical reduction gear for aircraft turbomachine

Thermal barrier coating with reduced edge crack initiation stress a...

Rotor assembly and rotating machine

Turbine engine comprising a rotor supporting variable-pitch blades

Seal assembly between a transition duct and a first stage vane stru...

Method for real-time simultaneous and calibrated additive and subtr...

Blade to stator heat shield interface in a gas turbine

Trailing edge cooling for a turbine blade

Compressor and gas turbine including the same

Stacking of rotor blades on centroids

Turbine wheel assembly with pinned ceramic matrix composite blades

Gas turbine blade

Ribbed pin fins

Exhaust diffuser

Leading edge hybrid cavities and cores for airfoils of gas turbine...

Compressor bleed cooling system for mid-frame torque discs downstre...

Patents Applicationslast 30 patents

EXHAUST NOZZLE AND A METHOD OF OPERATING AN EXHAUST NOZZLE

HEAT SHIELD FOR A SUPERCHARGING DEVICE

ASYMMETRIC HEAT TRANSFER MEMBER FILLET TO DIRECT COOLING FLOW

MACHINE AND METHOD FOR VACCUUM-ASSISTED SERVICING OF A FLUID ENCLOSURE

TURBINE BLADE COMPRISING RIBS BETWEEN COOLING OUTLETS WITH COOLING...

APPARATUS FOR OIL LUBRICATION OF A ROTATIONALLY FIXED CONNECTION BE...

CARTRIDGE TIP FOR TURBOMACHINE COMBUSTOR

BLEED AIR OFFTAKE ASSEMBLY FOR A GAS TURBINE ENGINE

Pin Member for Turbine

PREFORM CROSSOVERS FOR COMPOSITE AIRFOILS

ASSEMBLY FOR A TURBINE ENGINE

A CONNECTOR AND AN ANTI THERMAL MISMATCH CONNECTING DEVICE

AIRCRAFT PROPULSION SYSTEM WITH VARIABLE AREA INLET ASSEMBLY

SEAL ASSEMBLY BETWEEN A TRANSITION DUCT AND A FIRST STAGE VANE STRU...

CENTRALIZED OIL DISTRIBUTION SYSTEM

Compact Airfoil Bleed-Air Re-circulation Heat Exchanger

ROTOR ASSEMBLY AND ROTATING MACHINE

FUEL INJECTION ASSEMBLY FOR A TURBOMACHINE

MECHANICAL REDUCTION GEAR FOR AIRCRAFT TURBOMACHINE

TURBINE ENGINE COMPRISING A ROTOR WITH VARIABLE-PITCH BLADES

ELECTRIC POWER DISSIPATER FOR ELECTRICALLY-ACTUATED TURBOCHARGER

BYPASS TURBOMACHINE

COMBUSTOR COMPONENT, COMBUSTOR, GAS TURBINE, AND MANUFACTURING METH...

GAS TURBINE BLADE

RIBBED PIN FINS

TURBINE WHEEL ASSEMBLY WITH PINNED CERAMIC MATRIX COMPOSITE BLADES

ANGLED IMPINGEMENT INSERTS WITH COOLING FEATURES

ROCKET PROPELLANT TANK ARRANGEMENT, ROCKET PROPULSION UNIT, AND ROCKET

TRAILING EDGE COOLING FOR A TURBINE BLADE

BLADED ROTOR WITH INTEGRATED GEAR FOR GAS TURBINE ENGINE