GB449664A - Improvements in air propellers with variable pitch - Google Patents
Improvements in air propellers with variable pitchInfo
- Publication number
- GB449664A GB449664A GB33812/35A GB3381235A GB449664A GB 449664 A GB449664 A GB 449664A GB 33812/35 A GB33812/35 A GB 33812/35A GB 3381235 A GB3381235 A GB 3381235A GB 449664 A GB449664 A GB 449664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anchorage
- propeller
- blades
- blade
- elastic connection
- 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
- B64C11/32—Blade pitch-changing mechanisms mechanical
- B64C11/34—Blade pitch-changing mechanisms mechanical automatic
- B64C11/343—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on the blades
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
449,664. Screw propellers. SOC. ANON. AEROPLANI CAPRONI, 76, Via Mecenate Taliedo, Milan, Italy. Dec. 6, 1935, No. 33812. Convention date, Dec. 6, 1934. [Class 114] A variable-pitch propeller in which the roots of the blade are attached to an elastic connection characterized by the anchorage of such connection in the sleeve or hub at a point coincident with the propeller axis. Screw propeller blades 1, 2 are connected by levers 10 and pins 11 with a slotted inclined fork 12 carried by a sleeve 13 adjustable along and around the propeller hub by linkage 14. The tendency of the blades to rotate under the action of centrifugal and torque forces is restrained by an elastic connection 5 between the blades which is anchored intermedially at the diaphragm 6, this anchorage being in line with the propeller shaft axis. The elastic connection takes several formations such as a steel wire 25, Fig. 7, or a series of laminated plates or elliptical section rods or a number of rods. The anchorage at the centre may be by means of a clamp. The anchorage to the root of the blade takes several forms such as forming the rod with a square end fitting into the blade root.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT449664X | 1934-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB449664A true GB449664A (en) | 1936-07-01 |
Family
ID=11256596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33812/35A Expired GB449664A (en) | 1934-12-06 | 1935-12-06 | Improvements in air propellers with variable pitch |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB449664A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2483912A (en) * | 1945-03-03 | 1949-10-04 | United Aircraft Corp | Automatic propeller |
| US2483913A (en) * | 1945-03-03 | 1949-10-04 | United Aircraft Corp | Automatic propeller blade support |
| US2495523A (en) * | 1945-01-20 | 1950-01-24 | Russell R Hays | Sustaining rotor for aircraft |
| US2495434A (en) * | 1946-05-17 | 1950-01-24 | Joy Mfg Co | Variable pitch propeller |
| US2553193A (en) * | 1946-08-12 | 1951-05-15 | Fairey Aviat Co Ltd | Rotor blade for rotary wing aircraft |
| US2612962A (en) * | 1947-09-09 | 1952-10-07 | Peninsular Metal Products Corp | Helicopter rotor construction |
| US2693241A (en) * | 1946-01-16 | 1954-11-02 | Charles W Ranson | Low drag rotor blade for helicopters |
| DE1292775B (en) * | 1961-10-27 | 1969-04-17 | Escher Wyss Gmbh | Mechanical adjustment device for the rotor blades of an axial compressor runner |
| US3482261A (en) * | 1967-12-13 | 1969-12-02 | Anthony V Sorrentino | Manually variable pitch propeller |
| US4029434A (en) * | 1975-05-22 | 1977-06-14 | Kenney Clarence E | Variable pitch mounting for airfoil blades of a windmill or propeller |
| US4773824A (en) * | 1985-01-18 | 1988-09-27 | Sulzer-Escher Wyss Gmbh (Pllc) | Rotor of a wind power installation |
| US4790722A (en) * | 1985-12-18 | 1988-12-13 | M A N Gutehoffnungshutte GmbH | Multi-blade rotor for a windmill-type apparatus |
| GB2214989A (en) * | 1988-02-11 | 1989-09-13 | Albert Denis Laurence | Mounting blades on rotors |
-
1935
- 1935-12-06 GB GB33812/35A patent/GB449664A/en not_active Expired
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2495523A (en) * | 1945-01-20 | 1950-01-24 | Russell R Hays | Sustaining rotor for aircraft |
| US2483913A (en) * | 1945-03-03 | 1949-10-04 | United Aircraft Corp | Automatic propeller blade support |
| US2483912A (en) * | 1945-03-03 | 1949-10-04 | United Aircraft Corp | Automatic propeller |
| US2693241A (en) * | 1946-01-16 | 1954-11-02 | Charles W Ranson | Low drag rotor blade for helicopters |
| US2495434A (en) * | 1946-05-17 | 1950-01-24 | Joy Mfg Co | Variable pitch propeller |
| US2553193A (en) * | 1946-08-12 | 1951-05-15 | Fairey Aviat Co Ltd | Rotor blade for rotary wing aircraft |
| US2612962A (en) * | 1947-09-09 | 1952-10-07 | Peninsular Metal Products Corp | Helicopter rotor construction |
| DE1292775B (en) * | 1961-10-27 | 1969-04-17 | Escher Wyss Gmbh | Mechanical adjustment device for the rotor blades of an axial compressor runner |
| US3482261A (en) * | 1967-12-13 | 1969-12-02 | Anthony V Sorrentino | Manually variable pitch propeller |
| US4029434A (en) * | 1975-05-22 | 1977-06-14 | Kenney Clarence E | Variable pitch mounting for airfoil blades of a windmill or propeller |
| US4773824A (en) * | 1985-01-18 | 1988-09-27 | Sulzer-Escher Wyss Gmbh (Pllc) | Rotor of a wind power installation |
| US4790722A (en) * | 1985-12-18 | 1988-12-13 | M A N Gutehoffnungshutte GmbH | Multi-blade rotor for a windmill-type apparatus |
| GB2214989A (en) * | 1988-02-11 | 1989-09-13 | Albert Denis Laurence | Mounting blades on rotors |
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