GB449664A - Improvements in air propellers with variable pitch - Google Patents

Improvements in air propellers with variable pitch

Info

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
Application number
GB33812/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANONIMA AEROPLANI CAPRONI SOC
Original Assignee
ANONIMA AEROPLANI CAPRONI SOC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANONIMA AEROPLANI CAPRONI SOC filed Critical ANONIMA AEROPLANI CAPRONI SOC
Publication of GB449664A publication Critical patent/GB449664A/en
Expired legal-status Critical Current

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

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.
GB33812/35A 1934-12-06 1935-12-06 Improvements in air propellers with variable pitch Expired GB449664A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495523A (en) * 1945-01-20 1950-01-24 Russell R Hays Sustaining rotor for aircraft
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
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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