GB342071A - Improvements in rotary propellers - Google Patents
Improvements in rotary propellersInfo
- Publication number
- GB342071A GB342071A GB3782029A GB3782029A GB342071A GB 342071 A GB342071 A GB 342071A GB 3782029 A GB3782029 A GB 3782029A GB 3782029 A GB3782029 A GB 3782029A GB 342071 A GB342071 A GB 342071A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- wheels
- feathering
- blades
- revolution
- 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
- B64C11/006—Paddle wheels
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Retarders (AREA)
Abstract
342,071. Paddle wheels. LAMMEREN, W. P. VAN, 45D, Veursche Weg, Voorschoten, Holland. Dec. 10, 1929, No. 37820. [Class 114.] In paddle wheels of the type wherein the blades rotate on axes parallel to the main axis and at half the rate thereof, the feathering gear is constructed to give the blades an increasing positive angle of incidence during one-half of each revolution of the propeller and a decreasing negative angle during the other half of the revolution and there are means for controlling or regulating the increase or decrease. On an extension of an eccentric C on the main axis is mounted a slidable cam K comprising two end portions having substantially elliptical peripheries K2, K3 of which the major axes are at right-angles and a middle portion having a circular periphery K1. By sliding the cam axially alteration in the stroke of the feathering device is effected and by moving the cam angularly adjustment of the phase is obtained. The two operations may be effected jointly by using a helical tongue and groove N. Upon the cam roll the inner ends of the feathering rods F and at their outer ends the rods carry pinions E which mesh with pinions H fixed on the shafts of the main blades A, the wheels H having double the number of teeth of the wheels E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3782029A GB342071A (en) | 1929-12-10 | 1929-12-10 | Improvements in rotary propellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3782029A GB342071A (en) | 1929-12-10 | 1929-12-10 | Improvements in rotary propellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB342071A true GB342071A (en) | 1931-01-29 |
Family
ID=10399229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3782029A Expired GB342071A (en) | 1929-12-10 | 1929-12-10 | Improvements in rotary propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB342071A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678019A (en) * | 1951-05-25 | 1954-05-11 | Robert R Couch | Horizontal cycloidal blade propulsion assembly |
| US3233547A (en) * | 1963-01-28 | 1966-02-08 | Thiokol Chemical Corp | Recovery system for rocket boosters |
| US9145205B2 (en) | 2009-08-07 | 2015-09-29 | Guy Jonathan James Rackham | Rotor assembly for a rotorcraft |
-
1929
- 1929-12-10 GB GB3782029A patent/GB342071A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2678019A (en) * | 1951-05-25 | 1954-05-11 | Robert R Couch | Horizontal cycloidal blade propulsion assembly |
| US3233547A (en) * | 1963-01-28 | 1966-02-08 | Thiokol Chemical Corp | Recovery system for rocket boosters |
| US9145205B2 (en) | 2009-08-07 | 2015-09-29 | Guy Jonathan James Rackham | Rotor assembly for a rotorcraft |
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