GB468588A - Improvements in or relating to blades for airscrews and the like - Google Patents
Improvements in or relating to blades for airscrews and the likeInfo
- Publication number
- GB468588A GB468588A GB2493236A GB2493236A GB468588A GB 468588 A GB468588 A GB 468588A GB 2493236 A GB2493236 A GB 2493236A GB 2493236 A GB2493236 A GB 2493236A GB 468588 A GB468588 A GB 468588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- pistons
- moving
- centrifugal force
- cylinders
- 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
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
Abstract
468,588. Screw propellers. FAIREY, C. R. Sept. 12, 1936, No. 24932. Addition to 457,823. [Class 114] An airscrew blade of the kind referred to in the parent Specification is modified in that the pistons used for moving the leading portion of the blade are placed at an angle to the longitudinal axis of the blade whereby centrifugal force thereon provides for an automatic opening and closing of the gap between the two parts. The adjustable leading edge 11 is carried by rods having at the inner ends pistons 12-15 moving in cylinders 16-19. The two centre pistons are connected by a pipe line with a chamber 22 in the hub 23, there being within the chamber a spring 25 acting on a piston 24 so that as centrifugal force increases with increasing speed upon the pistons 13-14, these are enabled to move inward, the piston 24 moving to compress the spring 25. Admission of fluid to the cylinders is by way of passages having non-return valves which tend to move off their seats under centrifugal force, thus permitting the escape of fluid when the revolutions of the blade exceed a predetermined number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2493236A GB468588A (en) | 1936-09-12 | 1936-09-12 | Improvements in or relating to blades for airscrews and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2493236A GB468588A (en) | 1936-09-12 | 1936-09-12 | Improvements in or relating to blades for airscrews and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468588A true GB468588A (en) | 1937-07-08 |
Family
ID=10219559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2493236A Expired GB468588A (en) | 1936-09-12 | 1936-09-12 | Improvements in or relating to blades for airscrews and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB468588A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185788A (en) * | 1986-01-28 | 1987-07-29 | Nei International Research & D | Blade for wind turbine |
| GB2227286A (en) * | 1989-01-17 | 1990-07-25 | Howden Wind Turbines Limited | Control of a wind turbine and adjustable blade therefor |
| WO2009050550A3 (en) * | 2007-09-27 | 2010-04-15 | Comandu Angelo | Variable-geometry blade for an eolic generator |
-
1936
- 1936-09-12 GB GB2493236A patent/GB468588A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185788A (en) * | 1986-01-28 | 1987-07-29 | Nei International Research & D | Blade for wind turbine |
| GB2185788B (en) * | 1986-01-28 | 1990-07-18 | Northern Eng Ind | Wind turbine |
| GB2227286A (en) * | 1989-01-17 | 1990-07-25 | Howden Wind Turbines Limited | Control of a wind turbine and adjustable blade therefor |
| WO2009050550A3 (en) * | 2007-09-27 | 2010-04-15 | Comandu Angelo | Variable-geometry blade for an eolic generator |
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