Arrangement of sensing elements

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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F01Engines F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES F01D17/00Regulating or controlling by varying flow

Current Industry

F01D17/02Arrangement of sensing elements

Industries

Patents Grantslast 30 patents

Information Patent Grant
Systems and methods utilizing gas temperature as a power source
- Patent number 12,163,485
- Issue date Dec 10, 2024
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Apparatus for providing an electrical connection
- Patent number 12,163,487
- Issue date Dec 10, 2024
- SAFRAN NACELLES LIMITED
- James Marquis
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Turbine engine stack nut with integrated phonic wheel
- Patent number 12,123,311
- Issue date Oct 22, 2024
- RTX Corporation
- Brian D. Shockey
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine assembly with clearance sensor having integrated internal c...
- Patent number 12,104,492
- Issue date Oct 1, 2024
- Rolls-Royce North American Technologies Inc.
- Brett Hartnagel
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Systems and methods utilizing gas temperature as a power source
- Patent number 12,104,553
- Issue date Oct 1, 2024
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Position sensor for variable vane assembly and method for calibrati...
- Patent number 12,098,647
- Issue date Sep 24, 2024
- Pratt & Whitney Canada Corp.
- Jasraj Chahal
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine engine exhaust gas temperature sensor
- Patent number 12,092,025
- Issue date Sep 17, 2024
- Unison Industries, LLC
- John P. Parsons
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Probe placement within a duct of a gas turbine engine
- Patent number 12,065,936
- Issue date Aug 20, 2024
- GE AVIO S.R.L.
- Cristian Lizzer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Turbine engine system
- Patent number 12,060,840
- Issue date Aug 13, 2024
- HELENG INC.
- Jack Ing Jeng
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Aeromechanical identification systems and methods
- Patent number 12,038,011
- Issue date Jul 16, 2024
- RTX Corporation
- Allison Clark Nicklous
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Modular and autonomous assembly for detecting the angular position...
- Patent number 11,994,033
- Issue date May 28, 2024
- SAFRAN AIRCRAFT ENGINES
- Alméric Pierre Louis Garnier
- G01 - MEASURING TESTING
Information Patent Grant
Active waveguide excitation and compensation
- Patent number 11,982,648
- Issue date May 14, 2024
- Etegent Technologies, Ltd.
- Oleg Lobkis
- G01 - MEASURING TESTING
Information Patent Grant
Blade for a turbomachine fan, comprising an identification medium,...
- Patent number 11,976,567
- Issue date May 7, 2024
- SAFRAN AIRCRAFT ENGINES
- Tony Alain Roger Joël Lhommeau
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Ultra high temperature speed sensor system in a gas turbine engine
- Patent number 11,939,920
- Issue date Mar 26, 2024
- Rolls-Royce Corporation
- John Joseph Costello
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Systems and methods utilizing gas temperature as a power source
- Patent number 11,879,409
- Issue date Jan 23, 2024
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Systems for controlling variable outlet guide vanes
- Patent number 11,879,343
- Issue date Jan 23, 2024
- Rolls-Royce Corporation
- Christopher D. Hall
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Gas passage
- Patent number 11,879,350
- Issue date Jan 23, 2024
- Rolls-Royce PLC
- Glen Pattinson
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Probe heat shielding
- Patent number 11,859,503
- Issue date Jan 2, 2024
- Pratt & Whitney Canada Corp.
- Guy Lefebvre
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Adjustable inlet guide vane angle monitoring device
- Patent number 11,852,020
- Issue date Dec 26, 2023
- General Electric Company
- Daniel Carter
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Rim driven thruster with adjustable rotor blade pitch
- Patent number 11,852,037
- Issue date Dec 26, 2023
- Peter Jacques Muller
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Blade angle position feedback system with embedded markers
- Patent number 11,835,543
- Issue date Dec 5, 2023
- Pratt & Whitney Canada Corp.
- Dana Tomescu
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Variable tandem fan outlet guide vanes
- Patent number 11,788,429
- Issue date Oct 17, 2023
- Rolls-Royce Corporation
- Christopher D. Hall
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Systems and methods utilizing gas temperature as a power source
- Patent number 11,773,805
- Issue date Oct 3, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Bleed flow safety system
- Patent number 11,739,697
- Issue date Aug 29, 2023
- Raytheon Technologies Corporation
- Jonathan Ortiz
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
System and method for validating component integrity in an engine
- Patent number 11,703,421
- Issue date Jul 18, 2023
- Pratt & Whitney Canada Corp.
- Tatjana Pekovic
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Sensor assemblies and methods of making sensor assemblies
- Patent number 11,692,909
- Issue date Jul 4, 2023
- Rosemount Aerospace Inc.
- Muralidhar Rao Bojjanapalli
- G01 - MEASURING TESTING
Information Patent Grant
Anti-rotation pin for compression fitting
- Patent number 11,680,493
- Issue date Jun 20, 2023
- Raytheon Technologies Corporation
- Alexander S. Langer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Systems and methods utilizing gas temperature as a power source
- Patent number 11,680,541
- Issue date Jun 20, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
System and method for removably inserting a sensor assembly into a...
- Patent number 11,635,750
- Issue date Apr 25, 2023
- General Electric Company
- Kurt Kramer Schleif
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Mounting system for vibration measurement system
- Patent number 11,614,031
- Issue date Mar 28, 2023
- Caterpillar Inc.
- Raghunandana H Madhava
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR SIMULATING PARTICLE IMPACT
- Publication number 20240280023
- Publication date Aug 22, 2024
- MTU AERO ENGINES AG
- Julia Hoermann
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
PRESSURE MEASURING RAKE COMPRISING A PATCHED LEADING EDGE, IN PARTI...
- Publication number 20240280428
- Publication date Aug 22, 2024
- Airbus SAS
- Nicolas DUPE
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ENGINE INLET COVER DETECTION SYSTEM AND METHOD
- Publication number 20240263563
- Publication date Aug 8, 2024
- GULFSTREAM AEROSPACE CORPORATION
- Jeffrey Hausmann
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ELECTRICAL CONNECTIVITY TO HIGH TEMPERATURE FILM SENSOR DEVICES
- Publication number 20240167887
- Publication date May 23, 2024
- Raytheon Technologies Corporation
- Paul F. Croteau
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20240093660
- Publication date Mar 21, 2024
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GAS TURBINE SYSTEM AND CONTROL METHOD THEREFOR
- Publication number 20240093649
- Publication date Mar 21, 2024
- Mitsubishi Heavy Industries, Ltd.
- Akitomo TSUKAHARA
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SYSTEMS AND METHODS FOR DETERMINING GAS TURBINE ENGINE OPERATING MA...
- Publication number 20240060426
- Publication date Feb 22, 2024
- Pratt & Whitney Canada Corp.
- MARTIN DROLET
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20240026838
- Publication date Jan 25, 2024
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
POSITION SENSOR FOR VARIABLE VANE ASSEMBLY AND METHOD FOR CALIBRATI...
- Publication number 20230323790
- Publication date Oct 12, 2023
- Jasraj Chahal
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
ADJUSTABLE INLET GUIDE VANE ANGLE MONITORING DEVICE
- Publication number 20230313699
- Publication date Oct 5, 2023
- GENERAL ELECTRIC COMPANY
- Daniel CARTER
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20230204003
- Publication date Jun 29, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TURBINE ENGINE EXHAUST GAS TEMPERATURE SENSOR
- Publication number 20230193821
- Publication date Jun 22, 2023
- UNISON INDUSTRIES, LLC
- John P. Parsons
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20230134721
- Publication date May 4, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SIGN DETECTION DEVICE AND SIGN DETECTION METHOD
- Publication number 20230115206
- Publication date Apr 13, 2023
- Mitsubishi Heavy Industries, Ltd.
- Tomohito NAKAMORI
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20230083829
- Publication date Mar 16, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
TURBINE ENGINE SYSTEM
- Publication number 20230075469
- Publication date Mar 9, 2023
- HELENG INC.
- Jack Ing Jeng
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
RIM DRIVEN THRUSTER WITH ADJUSTABLE ROTOR BLADE PITCH
- Publication number 20230074750
- Publication date Mar 9, 2023
- Peter Jacques Muller
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS FOR CONTROLLING VARIABLE OUTLET GUIDE VANES
- Publication number 20230066572
- Publication date Mar 2, 2023
- Rolls-Royce Corporation
- Christopher D. Hall
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
VARIABLE TANDEM FAN OUTLET GUIDE VANES
- Publication number 20230066627
- Publication date Mar 2, 2023
- Rolls-Royce Corporation
- Christopher D. Hall
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20230014773
- Publication date Jan 19, 2023
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Application
DYNAMIC INSTRUMENTATION ASSEMBLY TO MEASURE PROPERTIES OF AN ENGINE...
- Publication number 20220412842
- Publication date Dec 29, 2022
- Rolls-Royce North American Technologies Inc.
- Mark O'Leary
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
MODULAR AND AUTONOMOUS ASSEMBLY FOR DETECTING THE ANGULAR POSITION...
- Publication number 20220403752
- Publication date Dec 22, 2022
- SAFRAN AIRCRAFT ENGINES
- Alméric Pierre Louis GARNIER
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
DEVICE FOR CONNECTING PARTS OF AN AIRCRAFT ENGINE AND METHOD FOR US...
- Publication number 20220372889
- Publication date Nov 24, 2022
- SAFRAN AIRCRAFT ENGINES
- Yves Roland CROCHEMORE
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
AEROMECHANICAL IDENTIFICATION SYSTEMS AND METHODS
- Publication number 20220325719
- Publication date Oct 13, 2022
- Raytheon Technologies Corporation
- Allison Clark Nicklous
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE
- Publication number 20220316424
- Publication date Oct 6, 2022
- ICE Thermal Harvesting, LLC
- Adrian Benjamin Bodishbaugh
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
BLADE FOR A TURBOMACHINE FAN, COMPRISING AN IDENTIFICATION MEDIUM,...
- Publication number 20220282625
- Publication date Sep 8, 2022
- SAFRAN AIRCRAFT ENGINES
- Tony Alain Roger Joël Lhommeau
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
BLADE ANGLE POSITION FEEDBACK SYSTEM WITH EMBEDDED MARKERS
- Publication number 20220276279
- Publication date Sep 1, 2022
- Pratt & Whitney Canada Corp.
- Dana TOMESCU
- G01 - MEASURING TESTING
Information Patent Application
LOW PRESSURE GENERATOR FOR GAS TURBINE ENGINE
- Publication number 20220176900
- Publication date Jun 9, 2022
- Rolls-Royce North American Technologies, Inc.
- Donald Klemen
- B60 - VEHICLES IN GENERAL
Information Patent Application
ON-BOARD PROPULSION TESTING APPARATUS
- Publication number 20220097871
- Publication date Mar 31, 2022
- Michigan Technological University
- Lyon B. King
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
PROBE PLACEMENT WITHIN A DUCT OF A GAS TURBINE ENGINE
- Publication number 20220090513
- Publication date Mar 24, 2022
- GE AVIO S.r.L.
- Cristian Lizzer
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Arrangement of sensing elements

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Systems and methods utilizing gas temperature as a power source

Apparatus for providing an electrical connection

Turbine engine stack nut with integrated phonic wheel

Turbine assembly with clearance sensor having integrated internal c...

Systems and methods utilizing gas temperature as a power source

Position sensor for variable vane assembly and method for calibrati...

Turbine engine exhaust gas temperature sensor

Probe placement within a duct of a gas turbine engine

Turbine engine system

Aeromechanical identification systems and methods

Modular and autonomous assembly for detecting the angular position...

Active waveguide excitation and compensation

Blade for a turbomachine fan, comprising an identification medium,...

Ultra high temperature speed sensor system in a gas turbine engine

Systems and methods utilizing gas temperature as a power source

Systems for controlling variable outlet guide vanes

Gas passage

Probe heat shielding

Adjustable inlet guide vane angle monitoring device

Rim driven thruster with adjustable rotor blade pitch

Blade angle position feedback system with embedded markers

Variable tandem fan outlet guide vanes

Systems and methods utilizing gas temperature as a power source

Bleed flow safety system

System and method for validating component integrity in an engine

Sensor assemblies and methods of making sensor assemblies

Anti-rotation pin for compression fitting

Systems and methods utilizing gas temperature as a power source

System and method for removably inserting a sensor assembly into a...

Mounting system for vibration measurement system

Patents Applicationslast 30 patents

METHOD FOR SIMULATING PARTICLE IMPACT

PRESSURE MEASURING RAKE COMPRISING A PATCHED LEADING EDGE, IN PARTI...

ENGINE INLET COVER DETECTION SYSTEM AND METHOD

ELECTRICAL CONNECTIVITY TO HIGH TEMPERATURE FILM SENSOR DEVICES

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

GAS TURBINE SYSTEM AND CONTROL METHOD THEREFOR

SYSTEMS AND METHODS FOR DETERMINING GAS TURBINE ENGINE OPERATING MA...

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

POSITION SENSOR FOR VARIABLE VANE ASSEMBLY AND METHOD FOR CALIBRATI...

ADJUSTABLE INLET GUIDE VANE ANGLE MONITORING DEVICE

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

TURBINE ENGINE EXHAUST GAS TEMPERATURE SENSOR

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

SIGN DETECTION DEVICE AND SIGN DETECTION METHOD

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

TURBINE ENGINE SYSTEM

RIM DRIVEN THRUSTER WITH ADJUSTABLE ROTOR BLADE PITCH

SYSTEMS FOR CONTROLLING VARIABLE OUTLET GUIDE VANES

VARIABLE TANDEM FAN OUTLET GUIDE VANES

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

DYNAMIC INSTRUMENTATION ASSEMBLY TO MEASURE PROPERTIES OF AN ENGINE...

MODULAR AND AUTONOMOUS ASSEMBLY FOR DETECTING THE ANGULAR POSITION...

DEVICE FOR CONNECTING PARTS OF AN AIRCRAFT ENGINE AND METHOD FOR US...

AEROMECHANICAL IDENTIFICATION SYSTEMS AND METHODS

SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCE

BLADE FOR A TURBOMACHINE FAN, COMPRISING AN IDENTIFICATION MEDIUM,...

BLADE ANGLE POSITION FEEDBACK SYSTEM WITH EMBEDDED MARKERS

LOW PRESSURE GENERATOR FOR GAS TURBINE ENGINE

ON-BOARD PROPULSION TESTING APPARATUS

PROBE PLACEMENT WITHIN A DUCT OF A GAS TURBINE ENGINE