GB793538A - Improvements relating to helicopter rotors - Google Patents
Improvements relating to helicopter rotorsInfo
- Publication number
- GB793538A GB793538A GB801955A GB801955A GB793538A GB 793538 A GB793538 A GB 793538A GB 801955 A GB801955 A GB 801955A GB 801955 A GB801955 A GB 801955A GB 793538 A GB793538 A GB 793538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- pair
- hub
- blade
- folded
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/46—Blades
- B64C27/473—Constructional features
- B64C27/50—Blades foldable to facilitate stowage of aircraft
Abstract
793,538. Helicopter rotors. FAIREY AVIATION CO., Ltd. March 16,1956 [March 18, 1955], No. 8019/55. Class 4. In a helicopter having two or more pairs of rotor blades all of the blades may be folded rearwardly over the fuselage by arranging the connections to the hub of one pair of blades at a level spaced vertically from the level of connections to the hub of the blades of the other pair(s). Each blade is connected by a hinge 7 to an extension arm 6 of the hub for folding movements and it is made fast to the arm by a releasable pin connection 8 which may be operated manually, electrically, pneumatically or hydraulically. In the preferred embodiment the pin 8 is secured to the piston of a hydraulic actuator 11 controlled from the cockpit through a line 15. The lower end wall of the actuator cylinder is spaced sufficiently from the upper surface of arm 6 to ensure that the portion of the pin which may become scored does not enter the cylinder. When folded one pair of blades 1, 3 are spaced above the other pair 2, 4. The axes of hinges 7 may be so inclined to ensure that in folded position the space between the blade tips of different pairs is accentuated and in extended position the tips will lie substantially in a common plane. A brake may be provided to stop the rotor in the correct position, shown in Figure 1, for blade folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB801955A GB793538A (en) | 1955-03-18 | 1955-03-18 | Improvements relating to helicopter rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB801955A GB793538A (en) | 1955-03-18 | 1955-03-18 | Improvements relating to helicopter rotors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB793538A true GB793538A (en) | 1958-04-16 |
Family
ID=9844227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB801955A Expired GB793538A (en) | 1955-03-18 | 1955-03-18 | Improvements relating to helicopter rotors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB793538A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716193A (en) * | 1995-07-21 | 1998-02-10 | Eurocopter France | Installation for affording electrical continuity for rotorcraft rotor |
| GB2341835A (en) * | 1998-05-28 | 2000-03-29 | Eurocopter Deutschland | Detachable means for a helicopter rotor blade |
| US6554226B2 (en) | 2000-07-20 | 2003-04-29 | Eurocopter Deutschland Gmbh | Skin of an airplane door and method of making door with same |
-
1955
- 1955-03-18 GB GB801955A patent/GB793538A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716193A (en) * | 1995-07-21 | 1998-02-10 | Eurocopter France | Installation for affording electrical continuity for rotorcraft rotor |
| GB2341835A (en) * | 1998-05-28 | 2000-03-29 | Eurocopter Deutschland | Detachable means for a helicopter rotor blade |
| GB2341835B (en) * | 1998-05-28 | 2002-08-07 | Eurocopter Deutschland | Rotor blade for a helicopter |
| US6554226B2 (en) | 2000-07-20 | 2003-04-29 | Eurocopter Deutschland Gmbh | Skin of an airplane door and method of making door with same |
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