FR2209101B1 - - Google Patents

Info

Publication number
FR2209101B1
FR2209101B1 FR7337070A FR7337070A FR2209101B1 FR 2209101 B1 FR2209101 B1 FR 2209101B1 FR 7337070 A FR7337070 A FR 7337070A FR 7337070 A FR7337070 A FR 7337070A FR 2209101 B1 FR2209101 B1 FR 2209101B1
Authority
FR
France
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
FR7337070A
Other versions
FR2209101A1 (fr
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.)
CHADWICK HELMUTH ELECTRONICS Inc
Original Assignee
CHADWICK HELMUTH ELECTRONICS Inc
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 CHADWICK HELMUTH ELECTRONICS Inc filed Critical CHADWICK HELMUTH ELECTRONICS Inc
Publication of FR2209101A1 publication Critical patent/FR2209101A1/fr
Application granted granted Critical
Publication of FR2209101B1 publication Critical patent/FR2209101B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/28—Determining imbalance by oscillating or rotating the body to be tested with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y10S416/50—Vibration damping features

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)
FR7337070A 1972-10-17 1973-10-17 Expired FR2209101B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00298397A US3802273A (en) 1972-10-17 1972-10-17 Helicopter rotor balancing method and system

Publications (2)

Publication Number Publication Date
FR2209101A1 FR2209101A1 (fr) 1974-06-28
FR2209101B1 true FR2209101B1 (fr) 1978-10-20

Family

ID=23150328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7337070A Expired FR2209101B1 (fr) 1972-10-17 1973-10-17

Country Status (4)

Country Link
US (1) US3802273A (fr)
DE (2) DE2351501A1 (fr)
FR (1) FR2209101B1 (fr)
GB (1) GB1418521A (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945256A (en) * 1975-04-21 1976-03-23 Chadwick-Helmuth Company, Inc. Helicopter rotor balancing apparatus and method
US4053123A (en) * 1976-04-16 1977-10-11 Chadwick-Helmuth Company, Inc. Method and apparatus to determine need for rotor blade pitch adjustment and/or blade substitution
US4112774A (en) * 1977-01-07 1978-09-12 Chadwick-Helmuth Company, Inc. Aircraft rotor out-of-track correction method and apparatus
US4531408A (en) * 1982-12-06 1985-07-30 Chadwick-Helmuth Company, Inc. Control of rotor blade stroboscopic display
GB2159952B (en) * 1984-05-22 1988-08-10 Micro Control Tech Ltd Method of operating a helicopter
FR2566123B1 (fr) * 1984-06-14 1988-06-24 Vincent Patrick Appareillage pour l'equilibrage de vehicule automobile, utilisant un oscillateur reglable
US4880966A (en) * 1988-04-08 1989-11-14 Scientific-Atlanta, Inc. Tachometer sensor using a lens system to a in sensing the rotational speed of an object
US5671051A (en) * 1993-08-02 1997-09-23 Wright, Jr.; Andrew M. Helicopter blade tracking system
US5607122A (en) * 1994-12-22 1997-03-04 Bell Helicopter Textron Inc. Tail rotor authority control for a helicopter
US6574572B2 (en) * 2000-02-24 2003-06-03 Simmonds Precision Products, Inc. Reducing vibration using QR decomposition and constrained optimization
US6950763B1 (en) 2002-11-27 2005-09-27 Simmonds Precision Products, Inc. Optimal shaft balance using integer programming to handle discrete adjustment
US9010679B2 (en) * 2012-06-26 2015-04-21 Bell Helicopter Textron Inc. Hybrid spherical and thrust bearing
US9840325B2 (en) * 2012-06-26 2017-12-12 Bell Helicopter Textron Inc. Dual series pitch link bearing
US9758243B1 (en) 2013-03-06 2017-09-12 RMCI, Inc. Calculation of helicopter rotor balance adjustments and coefficients using mobile devices or custom coefficients
US9632000B1 (en) 2014-01-27 2017-04-25 RMCI, Inc. Track measurement by phase-based signal extraction
CN105841884B (zh) * 2016-06-01 2018-11-09 苏州星火量测设备有限公司 外转子不平衡量校正器
CN108910079B (zh) * 2018-06-26 2020-07-17 中国直升机设计研究所 一种旋翼试验台动平衡调整相位识别方法
CN112611512A (zh) * 2021-01-10 2021-04-06 郭森森 一种基于app的直升机旋翼动平衡调整方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090803A (en) * 1933-07-13 1937-08-24 Harry W Moore Dynamic balancing apparatus
US2343383A (en) * 1941-04-11 1944-03-07 United Aircraft Corp Means and method of balancing propellers
US2362842A (en) * 1941-04-29 1944-11-14 United Aircraft Corp Propeller balancing mechanism
US2455053A (en) * 1945-03-09 1948-11-30 Bausch & Lomb Optical method and apparatus for checking propeller blades
FR1099821A (fr) * 1953-05-02 1955-09-09 Schenck Gmbh Carl Indication électrique du balourd de corps tournants
US2722830A (en) * 1954-04-15 1955-11-08 Schenck Gmbh Carl Means for the electric indication of unbalance in rotors
US3478602A (en) * 1966-10-28 1969-11-18 Newport News S & D Co Filter for a balancing machine
US3675495A (en) * 1970-02-25 1972-07-11 Applied Power Ind Inc Wheel balancing apparatus

Also Published As

Publication number Publication date
FR2209101A1 (fr) 1974-06-28
GB1418521A (en) 1975-12-24
US3802273A (en) 1974-04-09
DE2351501A1 (de) 1974-04-18
DE7336976U (de) 1976-05-26

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Legal Events

Date Code Title Description
ST Notification of lapse