GB1381946A - Load measuring equipment - Google Patents

Load measuring equipment

Info

Publication number
GB1381946A
GB1381946A GB902072A GB902072A GB1381946A GB 1381946 A GB1381946 A GB 1381946A GB 902072 A GB902072 A GB 902072A GB 902072 A GB902072 A GB 902072A GB 1381946 A GB1381946 A GB 1381946A
Authority
GB
United Kingdom
Prior art keywords
shaft
links
rotor
measure
strain gauges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB902072A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westland Group PLC
Original Assignee
Westland Aircraft Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westland Aircraft Ltd filed Critical Westland Aircraft Ltd
Priority to GB902072A priority Critical patent/GB1381946A/en
Priority to DE2305156A priority patent/DE2305156A1/en
Priority to FR7306840A priority patent/FR2174072A1/fr
Publication of GB1381946A publication Critical patent/GB1381946A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
    • G01L5/161—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance
    • G01L5/1627—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of strain gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

1381946 Measuring force electrically WESTLAND AIRCRAFT Ltd 26 Jan 1973 [28 Feb 1972] 9020/72 Heading G1N Apparatus for measuring the tilting and radial forces in the shaft of a helicopter rotor comprises a whirl tower for supporting the rotor shaft and blades, including a drive-shaft 17, Fig.2, supported between two spaced sliding bearings 26, whose housings 45 are each attached by radial links 28, 29 to a fixed structure 30, wherein strain gauges 35 mounted on the links 28, 29 are connected via slip rings 43 additively in a first bridge to measure radial force, and differentially in a second bridge to measure tilt of the assembly. The links 28, 29 of each pair are mounted at right angles to each other. Strain gauges 32 are mounted on the drive-shaft 17 to measure rotor torque. The pitch of the rotor blades is varied by three control actuators 22 whose displacements are measured by potentiometers 35, the resulting strain being measured by strain gauge resistors 36. The shaft 17 is further supported by thrust bearing 39 whose housing 38 is attached to a fixed base-plate 25 by links 39 carrying strain gauges 44.
GB902072A 1972-02-28 1972-02-28 Load measuring equipment Expired GB1381946A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB902072A GB1381946A (en) 1972-02-28 1972-02-28 Load measuring equipment
DE2305156A DE2305156A1 (en) 1972-02-28 1973-02-02 LOAD MEASURING DEVICE
FR7306840A FR2174072A1 (en) 1972-02-28 1973-02-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB902072A GB1381946A (en) 1972-02-28 1972-02-28 Load measuring equipment

Publications (1)

Publication Number Publication Date
GB1381946A true GB1381946A (en) 1975-01-29

Family

ID=9863828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB902072A Expired GB1381946A (en) 1972-02-28 1972-02-28 Load measuring equipment

Country Status (3)

Country Link
DE (1) DE2305156A1 (en)
FR (1) FR2174072A1 (en)
GB (1) GB1381946A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168160A (en) * 1976-10-25 1979-09-18 Theodor Stoferle Arrangement for measuring and/or monitoring an axial force
US4573351A (en) * 1984-02-13 1986-03-04 Litton Systems, Inc. Hub moment sensor for a horizontal rotor aircraft
US5261757A (en) * 1991-10-03 1993-11-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Shaft mount for data coupler system
US5693896A (en) * 1995-03-16 1997-12-02 Eurocopter France Test rig for rotors of gyrocraft
CN100392369C (en) * 2003-09-27 2008-06-04 北京迪威尔石油天然气技术开发有限公司 Torque and load sensor
CN102901623A (en) * 2012-10-24 2013-01-30 哈尔滨东安发动机（集团）有限公司 Device for testing coaxial inversion rotor wing of helicopter
CN110562483A (en) * 2019-09-24 2019-12-13 哈尔滨工业大学 lift-drag characteristic measuring device for vertical Mars aircraft coaxial rotor system
CN111232244A (en) * 2020-04-29 2020-06-05 北京清航紫荆装备科技有限公司 Unmanned helicopter rotor system test bench

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346703A1 (en) * 1976-03-29 1977-10-28 Abg Semca AXIAL THRUST MEASURING DEVICE OF A ROTATING MACHINE SHAFT
FR2681310B1 (en) * 1991-09-18 1993-12-17 Sextant Avionique DEVICE FOR DETECTING THE ICING OF THE BLADES OF AN AIRCRAFT ROTOR.
FR2831663A1 (en) * 2001-10-25 2003-05-02 Centre Nat Rech Scient SENSOR DEVICE FOR DETERMINING MECHANICAL STRESSES AND MEASUREMENT AND ANALYSIS DEVICES INCORPORATING SUCH A SENSOR
FR2834065B1 (en) * 2001-12-20 2004-03-05 Centre Nat Rech Scient SENSOR DEVICE, MEASURING DEVICE AND ANALYSIS DEVICE COMPRISING SUCH A SENSOR DEVICE
CN110836744B (en) * 2019-10-31 2021-06-11 南京理工大学 Small-size vertical thrust vector testboard

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168160A (en) * 1976-10-25 1979-09-18 Theodor Stoferle Arrangement for measuring and/or monitoring an axial force
US4573351A (en) * 1984-02-13 1986-03-04 Litton Systems, Inc. Hub moment sensor for a horizontal rotor aircraft
US5261757A (en) * 1991-10-03 1993-11-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Shaft mount for data coupler system
US5693896A (en) * 1995-03-16 1997-12-02 Eurocopter France Test rig for rotors of gyrocraft
CN100392369C (en) * 2003-09-27 2008-06-04 北京迪威尔石油天然气技术开发有限公司 Torque and load sensor
CN102901623A (en) * 2012-10-24 2013-01-30 哈尔滨东安发动机（集团）有限公司 Device for testing coaxial inversion rotor wing of helicopter
CN110562483A (en) * 2019-09-24 2019-12-13 哈尔滨工业大学 lift-drag characteristic measuring device for vertical Mars aircraft coaxial rotor system
CN110562483B (en) * 2019-09-24 2022-07-15 哈尔滨工业大学 Lift-drag characteristic measuring device for vertical Mars aircraft coaxial rotor system
CN111232244A (en) * 2020-04-29 2020-06-05 北京清航紫荆装备科技有限公司 Unmanned helicopter rotor system test bench

Also Published As

Publication number Publication date
FR2174072A1 (en) 1973-10-12
DE2305156A1 (en) 1973-09-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee