FR2377324A1 - Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod - Google Patents
Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rodInfo
- Publication number
- FR2377324A1 FR2377324A1 FR7800258A FR7800258A FR2377324A1 FR 2377324 A1 FR2377324 A1 FR 2377324A1 FR 7800258 A FR7800258 A FR 7800258A FR 7800258 A FR7800258 A FR 7800258A FR 2377324 A1 FR2377324 A1 FR 2377324A1
- Authority
- FR
- France
- Prior art keywords
- rotor
- blades
- elastic connection
- torsion elastic
- pair
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Centrifugal Separators (AREA)
Abstract
A rotor for a helicopter has an even number of rotor blades which are supported in pairs lying diametrically opposite to each other on the rotor head. The support is provided by a single angle bearing which permits rotation movement with each pair of rotor blades having a torsion elastic connection on the root side between the blades. The torsion elastic connection with both corresponding rotor blades (1) is combined into an integral construction unit which is supported in the root area of the appropriate rotor blade by a bearing (3) on the rotor head which permits the blade angle and blade impact movements. The torsion elastic connection is made as a rod formed flat at right angles to the rotor plane.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772701519 DE2701519C3 (en) | 1977-01-15 | 1977-01-15 | Rotor for a rotary wing aircraft |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2377324A1 true FR2377324A1 (en) | 1978-08-11 |
FR2377324B1 FR2377324B1 (en) | 1984-03-09 |
Family
ID=5998746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7800258A Granted FR2377324A1 (en) | 1977-01-15 | 1978-01-05 | Helicopter rotor construction with even number of blades - has each pair having torsion elastic connection made as integral unit in form of flat rod |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2701519C3 (en) |
FR (1) | FR2377324A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521792A1 (en) * | 1991-07-03 | 1993-01-07 | AEROSPATIALE Société Nationale Industrielle | Rotary wing aircraft rotor head, rigid in drag and articulated in pitch and flapping |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2903524C2 (en) * | 1979-01-31 | 1982-02-25 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Flapping and swivel jointless connection of rotor blades of a rotary wing aircraft |
DE2932441C2 (en) * | 1979-08-10 | 1983-10-06 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Damping device for a rotor blade |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3880551A (en) * | 1973-11-15 | 1975-04-29 | Boeing Co | Rotary head assembly for rotary wing aircraft |
FR2251474A1 (en) * | 1973-11-15 | 1975-06-13 | Boeing Co | |
FR2285298A1 (en) * | 1974-09-19 | 1976-04-16 | Aerospatiale | TAIL ROTOR ARRANGEMENT FOR GIRAVIONS |
-
1977
- 1977-01-15 DE DE19772701519 patent/DE2701519C3/en not_active Expired
-
1978
- 1978-01-05 FR FR7800258A patent/FR2377324A1/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3880551A (en) * | 1973-11-15 | 1975-04-29 | Boeing Co | Rotary head assembly for rotary wing aircraft |
FR2251474A1 (en) * | 1973-11-15 | 1975-06-13 | Boeing Co | |
FR2285298A1 (en) * | 1974-09-19 | 1976-04-16 | Aerospatiale | TAIL ROTOR ARRANGEMENT FOR GIRAVIONS |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521792A1 (en) * | 1991-07-03 | 1993-01-07 | AEROSPATIALE Société Nationale Industrielle | Rotary wing aircraft rotor head, rigid in drag and articulated in pitch and flapping |
FR2678579A1 (en) * | 1991-07-03 | 1993-01-08 | Aerospatiale | HEAD OF ROTOR OF GIRAVION, RIGID IN TRAINEE AND ARTICULATED IN STEP AND BEAT. |
US5474424A (en) * | 1991-07-03 | 1995-12-12 | Aerospatiale Societe Nationale Industrielle | Rotorcraft rotor head, which is rigid in drag and articulated in pitch and flapping |
Also Published As
Publication number | Publication date |
---|---|
FR2377324B1 (en) | 1984-03-09 |
DE2701519C3 (en) | 1980-11-20 |
DE2701519A1 (en) | 1978-07-20 |
DE2701519B2 (en) | 1980-04-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |