CA1110668A - Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies - Google Patents

Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies

Info

Publication number: CA1110668A
Authority: CA; Canada
Prior art keywords: members; mass; vibration absorber; apertures; vibration
Prior art date: 1978-08-04
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

CA332,757A

Other languages

English (en)

French (fr)

Inventor

Paul W. Von Hardenberg

Kenneth C. Mard

Edward Lavoie

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.)

RTX Corp

Original Assignee

United Technologies Corp

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.)

1978-08-04

Filing date

1979-07-27

Publication date

1981-10-13

1979-07-27 Application filed by United Technologies Corp filed Critical United Technologies Corp

1981-10-13 Application granted granted Critical

1981-10-13 Publication of CA1110668A publication Critical patent/CA1110668A/en

Status Expired legal-status Critical Current

Links

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Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/001—Vibration damping devices
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/001—Vibration damping devices
- B64C2027/005—Vibration damping devices using suspended masses

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Aviation & Aerospace Engineering (AREA)
Vibration Prevention Devices (AREA)

CA332,757A 1978-08-04 1979-07-27 Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies Expired CA1110668A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US931,083		1978-08-04
US05/931,083 US4213518A (en)	1978-08-04	1978-08-04	Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies

Publications (1)

Publication Number	Publication Date
CA1110668A true CA1110668A (en)	1981-10-13

Family

ID=25460200

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA332,757A Expired CA1110668A (en)	1978-08-04	1979-07-27	Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies

Country Status (3)

Country	Link
US (1)	US4213518A (2)
JP (1)	JPS5524294A (2)
CA (1)	CA1110668A (2)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4972930A (en) *	1989-12-26	1990-11-27	The Boeing Company	Dynamically adjustable rotary unbalance shaker
FR2680848B1 (fr) *	1991-08-29	1995-03-17	Aerospatiale Ste Nat Indle	Procede et dispositif pour filtrer les excitations vibratoires transmises entre deux pieces, notamment entre le rotor et le fuselage d'un helicoptere.
US5775472A (en) *	1995-06-27	1998-07-07	Honeywell Inc.	Multi-axis tuned mass damper
FR2792554B1 (fr) *	1999-04-22	2001-06-29	Vibrachoc Sa	Dispositif resonant, tel que batteur ou generateur d'efforts
DE102007000131A1 (de) *	2007-03-07	2008-09-11	Hilti Ag	Handwerkzeugmaschine mit pneumatischem Schlagwerk
CN103213686B (zh) *	2013-04-24	2015-07-01	哈尔滨飞机工业集团有限责任公司	一种直升机机载设备吊挂结构
CN108895208B (zh) *	2018-08-03	2024-05-03	重庆君道消防安全技术股份公司	可变固定频率抗震支架
CN109683639B (zh) *	2018-12-06	2021-08-10	中国电子工程设计院有限公司	一种主动隔振的控制方法及装置
US12060148B2 (en)	2022-08-16	2024-08-13	Honeywell International Inc.	Ground resonance detection and warning system and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3005520A (en) *	1959-09-14	1961-10-24	United Aircraft Corp	Vibration absorber
US3536165A (en) *	1967-12-29	1970-10-27	Boeing Co	Vibration absorber tuner
US3540809A (en) *	1968-09-20	1970-11-17	United Aircraft Corp	Vibration damped helicopter rotor
JPS5610202B2 (2) *	1973-05-01	1981-03-06

1978
- 1978-08-04 US US05/931,083 patent/US4213518A/en not_active Expired - Lifetime
1979
- 1979-07-27 CA CA332,757A patent/CA1110668A/en not_active Expired
- 1979-08-03 JP JP9980679A patent/JPS5524294A/ja active Granted

Also Published As

Publication number	Publication date
US4213518A (en)	1980-07-22
JPS5524294A (en)	1980-02-21
JPS6333570B2 (2)	1988-07-06

Legal Events

Date	Code	Title	Description
1998-10-13	MKEX	Expiry

Publication	Publication Date	Title
US4365770A (en)	1982-12-28	Fixed position variable frequency pendular-type vibration absorber
US4550812A (en)	1985-11-05	Fixed position, fixed frequency pendular-type vibration absorber with frequency linearization
EP1543253B1 (en)	2009-09-09	Piezoelectric liquid inertia vibration eliminator
US8215606B2 (en)	2012-07-10	Variable stiffness support
CA1110668A (en)	1981-10-13	Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies
EP2368066B1 (en)	2014-08-20	Apparatus for improved vibration isolation
GB2051301A (en)	1981-01-14	Liquid inertia vibration damper
EP1419089A2 (en)	2004-05-19	Compact vibration cancellation device
CA2802149A1 (en)	2013-07-10	A mechanically optimized liquid inertia vibration eliminator and aircraft pylon system
JPS5825898B2 (ja)	1983-05-30	ばね・質量共振形吸振器
US4365771A (en)	1982-12-28	Inplane nodalization system
EP0008585B1 (en)	1982-05-19	Vibration absorber and use thereof in a helicopter
EP2610172B1 (en)	2015-11-18	System and method of tuning a liquid inertia vibration eliminator
CA2808987C (en)	2015-11-24	Self tuning vibration absorber
US11427308B2 (en)	2022-08-30	Attachment of a landing gear
Schubert et al.	1969	Theoretical and experimental investigation of electrohydraulic vibration isolation systems
CA1112674A (en)	1981-11-17	Fixed position variable frequency pendular-type vibration absorber
CA2135392C (en)	1999-12-07	Helicopter
CA2422391C (en)	2007-02-13	Method and apparatus for improved vibration isolation
US20220144416A1 (en)	2022-05-12	Liquid inertia vibration elimination system with compound period strut
JPH0781693A (ja)	1995-03-28	ヘリコプタの能動防振装置
JPH05193580A (ja)	1993-08-03	ヘリコプタの振動軽減装置
US11008092B2 (en)	2021-05-18	Compact design of a liquid inertia vibration elimination system
GB2043573A (en)	1980-10-08	Helicopter transmission mounting