CA1130769A - Adjustable bearing centering means for helicopter rotor elastomeric bearings - Google Patents
Adjustable bearing centering means for helicopter rotor elastomeric bearingsInfo
- Publication number
- CA1130769A CA1130769A CA349,049A CA349049A CA1130769A CA 1130769 A CA1130769 A CA 1130769A CA 349049 A CA349049 A CA 349049A CA 1130769 A CA1130769 A CA 1130769A
- Authority
- CA
- Canada
- Prior art keywords
- spherical
- centering
- elastomeric bearing
- hub arm
- elastomeric
- 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
Links
- 230000003068 static effect Effects 0.000 claims abstract description 37
- 230000013011 mating Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- WLNBMPZUVDTASE-HXIISURNSA-N (2r,3r,4s,5r)-2-amino-3,4,5,6-tetrahydroxyhexanal;sulfuric acid Chemical compound [O-]S([O-])(=O)=O.O=C[C@H]([NH3+])[C@@H](O)[C@H](O)[C@H](O)CO.O=C[C@H]([NH3+])[C@@H](O)[C@H](O)[C@H](O)CO WLNBMPZUVDTASE-HXIISURNSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 108010085990 projectin Proteins 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/322—Blade travel limiting devices, e.g. droop stops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/35—Rotors having elastomeric joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Support Of The Bearing (AREA)
- Radio Relay Systems (AREA)
- Compounds Of Unknown Constitution (AREA)
- Catching Or Destruction (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/035,365 US4242047A (en) | 1979-05-02 | 1979-05-02 | Adjustable bearing centering means for helicopter rotor elastomeric bearings |
| US35,365 | 1979-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1130769A true CA1130769A (en) | 1982-08-31 |
Family
ID=21882227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA349,049A Expired CA1130769A (en) | 1979-05-02 | 1980-04-02 | Adjustable bearing centering means for helicopter rotor elastomeric bearings |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4242047A (enExample) |
| EP (1) | EP0028636B1 (enExample) |
| JP (1) | JPS55148696A (enExample) |
| AU (1) | AU528903B2 (enExample) |
| BE (1) | BE882662A (enExample) |
| BR (1) | BR8008668A (enExample) |
| CA (1) | CA1130769A (enExample) |
| DE (1) | DE3068997D1 (enExample) |
| IT (1) | IT1131121B (enExample) |
| NO (1) | NO148144C (enExample) |
| WO (1) | WO1980002407A1 (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1157122B (it) * | 1982-12-06 | 1987-02-11 | Agusta Aeronaut Costr | Rotore per elicottero |
| FR2775951B1 (fr) | 1998-03-16 | 2001-09-07 | Rene Mouille | Pale de rotor, notamment pour le rotor arriere anticouple d'un helicoptere |
| FR3017855B1 (fr) * | 2014-02-21 | 2016-04-29 | Airbus Helicopters | Rotor pour giravion comportant un mecanisme de butee en battement, et giravion |
| CN118928762B (zh) * | 2024-08-28 | 2026-02-24 | 彩虹无人机科技有限公司 | 一种旋翼机的旋翼桨毂定心结构及旋翼机 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501250A (en) * | 1968-03-22 | 1970-03-17 | Boeing Co | Rotor hub |
| US3700352A (en) * | 1971-03-05 | 1972-10-24 | Lord Corp | Rotor system |
| US3759631A (en) * | 1972-07-05 | 1973-09-18 | United Aircraft Corp | Compound bearing for connecting a helicopter blade to a helicopter rotor |
| US3759632A (en) * | 1972-07-05 | 1973-09-18 | United Aircraft Corp | Articulated helicopter rotor |
| US3764230A (en) * | 1972-07-05 | 1973-10-09 | United Aircraft Corp | Articulated helicopter rotor utilizing plural elastomeric bearings for articulated support of the blade from the rotor hub |
| US3761199A (en) * | 1972-07-14 | 1973-09-25 | United Aircraft Corp | Helicopter rotor with redundant load carrying capability |
| US3853426A (en) * | 1972-09-05 | 1974-12-10 | United Aircraft Corp | Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops |
| US3778189A (en) * | 1972-09-05 | 1973-12-11 | United Aircraft Corp | Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops |
| GB1432117A (en) * | 1973-05-10 | 1976-04-14 | Aerospatiale | Rotor for rotating wing type aircraft |
| US3862812A (en) * | 1973-07-18 | 1975-01-28 | Lord Corp | Rotor blade retention system |
| US3932059A (en) * | 1975-01-10 | 1976-01-13 | United Technologies Corporation | Droop stops for helicopter rotor having elastomeric bearings |
| GB1530366A (en) * | 1975-07-18 | 1978-10-25 | Lord Corp | Rotary blade retention system |
| US4028001A (en) * | 1975-07-28 | 1977-06-07 | Westland Aircraft Limited | Rotor for rotary wing aircraft |
| DE2643166A1 (de) * | 1975-11-03 | 1977-05-12 | United Technologies Corp | Elastomeres lager fuer hubschrauberrotor |
| US4028002A (en) * | 1976-03-01 | 1977-06-07 | Lord Corporation | Rotor blade retention system |
| GB1534404A (en) * | 1976-07-15 | 1978-12-06 | Westland Aircraft Ltd | Helicopter rotors |
| US4203708A (en) * | 1978-06-26 | 1980-05-20 | United Technologies Corporation | Elastomeric rotor load reaction system |
-
1979
- 1979-05-02 US US06/035,365 patent/US4242047A/en not_active Expired - Lifetime
-
1980
- 1980-04-02 CA CA349,049A patent/CA1130769A/en not_active Expired
- 1980-04-04 BE BE0/200132A patent/BE882662A/fr not_active IP Right Cessation
- 1980-04-09 AU AU57273/80A patent/AU528903B2/en not_active Ceased
- 1980-04-10 WO PCT/US1980/000406 patent/WO1980002407A1/en not_active Ceased
- 1980-04-10 DE DE8080901087T patent/DE3068997D1/de not_active Expired
- 1980-04-10 BR BR8008668A patent/BR8008668A/pt unknown
- 1980-04-28 JP JP5703980A patent/JPS55148696A/ja active Granted
- 1980-05-02 IT IT21736/80A patent/IT1131121B/it active
- 1980-11-17 EP EP80901087A patent/EP0028636B1/en not_active Expired
- 1980-12-30 NO NO803954A patent/NO148144C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO148144B (no) | 1983-05-09 |
| NO148144C (no) | 1983-08-17 |
| NO803954L (no) | 1980-12-30 |
| JPS6341800B2 (enExample) | 1988-08-18 |
| JPS55148696A (en) | 1980-11-19 |
| IT8021736A0 (it) | 1980-05-02 |
| AU528903B2 (en) | 1983-05-19 |
| US4242047A (en) | 1980-12-30 |
| EP0028636A4 (en) | 1981-09-01 |
| IT1131121B (it) | 1986-06-18 |
| DE3068997D1 (en) | 1984-09-27 |
| AU5727380A (en) | 1980-11-06 |
| BE882662A (fr) | 1980-07-31 |
| WO1980002407A1 (en) | 1980-11-13 |
| EP0028636B1 (en) | 1984-08-22 |
| BR8008668A (pt) | 1981-04-14 |
| EP0028636A1 (en) | 1981-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |