ES449202A1 - Perfeccionamientos en la fabricacion de rotores. - Google Patents

Perfeccionamientos en la fabricacion de rotores.

Info

Publication number
ES449202A1
ES449202A1 ES449202A ES449202A ES449202A1 ES 449202 A1 ES449202 A1 ES 449202A1 ES 449202 A ES449202 A ES 449202A ES 449202 A ES449202 A ES 449202A ES 449202 A1 ES449202 A1 ES 449202A1
Authority
ES
Spain
Prior art keywords
spar
hole
stress concentration
plug
pin
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
ES449202A
Other languages
English (en)
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.)
Raytheon Technologies 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.)
Filing date
Publication date
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of ES449202A1 publication Critical patent/ES449202A1/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/33—Rotors having flexing arms
ES449202A 1975-06-26 1976-06-25 Perfeccionamientos en la fabricacion de rotores. Expired ES449202A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/590,773 US4008980A (en) 1975-06-26 1975-06-26 Composite helicopter spar and means to alleviate stress concentration

Publications (1)

Publication Number Publication Date
ES449202A1 true ES449202A1 (es) 1977-07-16

Family

ID=24363643

Family Applications (1)

Application Number Title Priority Date Filing Date
ES449202A Expired ES449202A1 (es) 1975-06-26 1976-06-25 Perfeccionamientos en la fabricacion de rotores.

Country Status (13)

Country Link
US (1) US4008980A (es)
JP (1) JPS5919879B2 (es)
AU (1) AU496861B2 (es)
BR (1) BR7604214A (es)
CA (1) CA1028308A (es)
DE (1) DE2621914C2 (es)
ES (1) ES449202A1 (es)
FR (1) FR2315432A1 (es)
GB (1) GB1549264A (es)
IL (1) IL49819A (es)
IT (1) IT1081220B (es)
MY (1) MY8100074A (es)
NL (1) NL7605657A (es)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047839A (en) * 1976-05-28 1977-09-13 United Technologies Corporation Torque reacting means for the hubs of cross beam rotors
DE2638167C3 (de) * 1976-08-25 1980-09-25 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Rotor für Drehflügelflugzeuge
DE2645174C2 (de) * 1976-10-07 1982-08-12 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Rotorkopf für einen schlag- und schwenkgelenklosen Rotor
DE2656296C3 (de) * 1976-12-11 1980-10-16 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Rotor für ein Drehflügelflugzeug
US4093400A (en) * 1976-12-15 1978-06-06 United Technologies Corporation Cross beam rotor
US4087203A (en) * 1977-01-07 1978-05-02 United Technologies Corporation Cross beam rotor
DE2722250A1 (de) * 1977-03-23 1978-11-23 Messerschmitt Boelkow Blohm Rotor eines drehfluegelflugzeugs
US4227857A (en) * 1977-08-19 1980-10-14 Textron, Inc. Composite flexural yoke for helicopters
DE2810334A1 (de) * 1978-03-10 1979-09-13 Messerschmitt Boelkow Blohm Rotorblatt, insbesondere fuer drehfluegelflugzeuge
FR2427945A1 (fr) * 1978-06-05 1980-01-04 Aerospatiale Agencement de montage souple pour rotor d'helicoptere a lame traversante
FR2430354A1 (fr) * 1978-07-07 1980-02-01 Aerospatiale Helice multipale a pas variable d'un type simplifie
US4244677A (en) * 1978-07-12 1981-01-13 United Technologies Corporation Cross-beam helicopter rotor with readily replaceable snubber
US4293276A (en) * 1978-10-27 1981-10-06 Textron Inc. Laminated composite rotor yoke
US4307996A (en) * 1978-11-16 1981-12-29 Westland Aircraft Limited Helicopter rotors
US4430045A (en) 1979-04-24 1984-02-07 Bell Helicopter Textron, Inc. Helicopter power train for distributing rotor blade flapping displacements through a plurality of drive train components
US4366387A (en) * 1979-05-10 1982-12-28 Carter Wind Power Wind-driven generator apparatus and method of making blade supports _therefor
DE2929906C3 (de) * 1979-07-24 1982-01-21 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Rotor für einen Hubschrauber mit zumindest einem Paar einander gegenüberliegender Rotorblätter
USRE30713E (en) * 1979-08-01 1981-08-18 United Technologies Corp. Cross beam rotor
DE2932441C2 (de) * 1979-08-10 1983-10-06 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Dämpfungseinrichtung für ein Rotorblatt
US4349317A (en) * 1979-11-02 1982-09-14 The Boeing Company Bearingless rotor for single and tandem helicopters
US4304694A (en) * 1979-12-03 1981-12-08 United Technologies Corporation High damping epoxy resin composite
US4344738A (en) * 1979-12-17 1982-08-17 United Technologies Corporation Rotor disk structure
US4381902A (en) * 1979-12-20 1983-05-03 Hughes Helicopters, Inc. Helicopter tail rotor of the elastomerically-mounted composite flexbeam type
DE3104682C2 (de) * 1981-02-10 1986-09-25 Stephan Shelton Conn. Roman Schlag- und schwenkgelenkloser Rotor für Drehflügelflugzeuge
US4650401A (en) * 1983-04-07 1987-03-17 Mcdonnell Douglas Helicopter Company Flat strap cruciform flexure for helicopter rotor systems
US4676720A (en) * 1984-07-10 1987-06-30 Kawasaki Jukogyo Kabushiki Kaisha Bearingless hub structure for rotary-wing aircrafts
US4695227A (en) * 1985-02-27 1987-09-22 Hughes Helicopters Inc. All composite, constant speed universal joint for use in a shaft driven tiltable main rotor for a helicopter
US4898515A (en) * 1986-07-23 1990-02-06 United Technologies Corporation External wrap of composite flexbeam
US4746272A (en) * 1986-07-23 1988-05-24 United Technologies Corporation Lobed composite flexbeam
US5690474A (en) * 1996-07-18 1997-11-25 Sikorsky Aircraft Corporation Optimized composite flexbeam for helicopter tail rotors
US5738494A (en) * 1996-07-18 1998-04-14 Sikorsky Aircraft Corporation Optimized composite flexbeam for helicopter rotors
US6024325A (en) * 1997-01-09 2000-02-15 Cartercopters, Llc Rotor for rotary wing aircraft
US5853145A (en) * 1997-01-09 1998-12-29 Cartercopters, Llc Rotor head for rotary wing aircraft
US6659722B2 (en) * 2001-05-07 2003-12-09 Bell Helicopter Textron, Inc. Composite rotor blade and method of manufacture
US7665969B2 (en) * 2005-01-24 2010-02-23 Bell Helicopter Textron Inc. Assembly for providing flexure to blade system
FR2933068B1 (fr) * 2008-06-27 2011-02-25 Eurocopter France Pale pour reduire les mouvements en trainee de ladite pale et procede pour reduire un tel mouvement en trainee.
DE102008041253A1 (de) * 2008-08-14 2010-02-18 Zf Friedrichshafen Ag Welle mit zumindest einer Längsbohrung und zumindest einer Querbohrung
US9884680B2 (en) 2008-12-11 2018-02-06 Sikorsky Aircraft Corporation Elastomeric bearing system motion limiter
ES2612127T3 (es) * 2009-06-02 2017-05-12 Ums Skeldar Sweden Ab Amortiguador de rotor y motor de cola con tal amortiguador de rotor
US10364902B2 (en) * 2011-06-17 2019-07-30 Waters Technologies Corporation Rotary shear valve with a two-pin drive shaft for liquid chromatography applications
US10336445B2 (en) * 2013-03-12 2019-07-02 Bell Helicopter Textron Inc. High flapping yoke hub assembly using a cylindrical elastomeric attachment to avoid holes
US9505489B2 (en) 2013-03-13 2016-11-29 Bell Helicopter Textron Inc. Flexing clevis arrangement bolted joint attachment for flexible rotor hub with high offset and high flapping
US9505490B2 (en) 2013-03-13 2016-11-29 Bell Helicopter Textron Inc. Composite rotor system using two race track style cantilevered yokes
US9347487B2 (en) * 2014-05-30 2016-05-24 Bell Helicopter Textron Inc. Rotorcraft bearing with rotation slip joint
US10654567B2 (en) 2015-03-26 2020-05-19 Bell Helicopter Textron Inc. Composite yoke fitting for bearing attachment to rotorcraft blade
CN104890866B (zh) * 2015-06-23 2017-10-17 中国航空动力机械研究所 一种直升机尾减输出法兰

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363469A (en) * 1942-09-01 1944-11-21 Metalastik Ltd Flexible coupling, flexible mounting, and the like
US3484174A (en) * 1968-04-08 1969-12-16 Kaman Corp Rotary wing system
FR2041747A1 (es) * 1969-05-20 1971-02-05 Sud Aviation
US3804552A (en) * 1972-07-05 1974-04-16 Textron Inc Four blade main rotor control power coupling
US3874815A (en) * 1973-11-15 1975-04-01 Boeing Co Rotary head assembly for rotary wing aircraft
US3874820A (en) * 1974-04-08 1975-04-01 United Aircraft Corp Hingeless in-plane rotor blade design

Also Published As

Publication number Publication date
AU1404376A (en) 1977-11-24
GB1549264A (en) 1979-08-01
IL49819A0 (en) 1976-10-31
DE2621914A1 (de) 1977-01-20
FR2315432B1 (es) 1982-07-09
CA1028308A (en) 1978-03-21
MY8100074A (en) 1981-12-31
NL7605657A (nl) 1976-12-28
AU496861B2 (en) 1978-11-02
US4008980A (en) 1977-02-22
FR2315432A1 (fr) 1977-01-21
DE2621914C2 (de) 1986-09-04
BR7604214A (pt) 1977-07-26
JPS5919879B2 (ja) 1984-05-09
IL49819A (en) 1978-07-31
JPS525197A (en) 1977-01-14
IT1081220B (it) 1985-05-16

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