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GB1272169A - Improvements in or relating to the damping of rotary flow-machine blades - Google Patents

Improvements in or relating to the damping of rotary flow-machine blades

Info

Publication number
GB1272169A
GB1272169A GB4487270A GB4487270A GB1272169A GB 1272169 A GB1272169 A GB 1272169A GB 4487270 A GB4487270 A GB 4487270A GB 4487270 A GB4487270 A GB 4487270A GB 1272169 A GB1272169 A GB 1272169A
Authority
GB
United Kingdom
Prior art keywords
damping
relating
rotary flow
blade
machine blades
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
GB4487270A
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Publication of GB1272169A publication Critical patent/GB1272169A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/16—Form or construction for counteracting blade vibration

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,272,169. Inertia weight dampers. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. 21 Sept., 1970 [20 Sept., 1969], No. 44872/70. Heading F2S. [Also in Division F1] Vibration of a turbine or compressor blade 4 is damped by a closed tubular member 1 mounted in a hole through the blade transverse to the chord and containing a liquid 5, e.g. the metal gallium. The member 1 is secured to the blade by friction, sticking, welding, riveting or screwing and is disposed at a point where the amplitude of vibration would be large.
GB4487270A 1969-09-20 1970-09-21 Improvements in or relating to the damping of rotary flow-machine blades Expired GB1272169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691947725 DE1947725A1 (en) 1969-09-20 1969-09-20 Device for vibration damping in rods or blades of flow machines, in particular of gas turbines

Publications (1)

Publication Number Publication Date
GB1272169A true GB1272169A (en) 1972-04-26

Family

ID=5746083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4487270A Expired GB1272169A (en) 1969-09-20 1970-09-21 Improvements in or relating to the damping of rotary flow-machine blades

Country Status (3)

Country Link
DE (1) DE1947725A1 (en)
FR (1) FR2061413A5 (en)
GB (1) GB1272169A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460314A (en) * 1980-12-29 1984-07-17 Rolls-Royce Limited Vibration damped rotor blades for turbomachines
GB2247932A (en) * 1990-09-12 1992-03-18 John Douglas Hue Fluid vibration damper for racquets, bats, clubs, and hammers
GB2305220A (en) * 1981-07-02 1997-04-02 Secr Defence Ships propeller dampers
WO1999032789A1 (en) * 1997-12-09 1999-07-01 Lm Glasfiber A/S Windmill blade with vibration damper
CN111458115A (en) * 2019-01-02 2020-07-28 西门子歌美飒可再生能源公司 System, test assembly and method for fatigue testing of wind turbine blades
US20210123347A1 (en) * 2019-10-23 2021-04-29 Rolls-Royce Corporation Gas turbine engine blades with airfoil plugs for selected tuning

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776763A (en) * 1987-12-02 1988-10-11 Sundstrand Corporation Mechanical damping of turbine wheel blades
DE10309595A1 (en) * 2003-03-05 2004-09-16 Rolls-Royce Deutschland Ltd & Co Kg Rotor blade for jet engine, has closed hollow portion, a portion of which is filled with viscous medium, with the remaining portion of the space filled with gas

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460314A (en) * 1980-12-29 1984-07-17 Rolls-Royce Limited Vibration damped rotor blades for turbomachines
GB2305220A (en) * 1981-07-02 1997-04-02 Secr Defence Ships propeller dampers
GB2305220B (en) * 1981-07-02 1998-01-07 Secr Defence Propeller dampers
GB2247932A (en) * 1990-09-12 1992-03-18 John Douglas Hue Fluid vibration damper for racquets, bats, clubs, and hammers
WO1999032789A1 (en) * 1997-12-09 1999-07-01 Lm Glasfiber A/S Windmill blade with vibration damper
CN111458115A (en) * 2019-01-02 2020-07-28 西门子歌美飒可再生能源公司 System, test assembly and method for fatigue testing of wind turbine blades
CN111458115B (en) * 2019-01-02 2022-09-27 西门子歌美飒可再生能源公司 System, test assembly and method for fatigue testing of wind turbine blades
US20210123347A1 (en) * 2019-10-23 2021-04-29 Rolls-Royce Corporation Gas turbine engine blades with airfoil plugs for selected tuning
US11220913B2 (en) * 2019-10-23 2022-01-11 Rolls-Royce Corporation Gas turbine engine blades with airfoil plugs for selected tuning

Also Published As

Publication number Publication date
FR2061413A5 (en) 1971-06-18
DE1947725A1 (en) 1971-04-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees