GB808740A - Improvements in bladed rotors, and in particular in ship propellers - Google Patents

Improvements in bladed rotors, and in particular in ship propellers

Info

Publication number
GB808740A
GB808740A GB13900/56A GB1390056A GB808740A GB 808740 A GB808740 A GB 808740A GB 13900/56 A GB13900/56 A GB 13900/56A GB 1390056 A GB1390056 A GB 1390056A GB 808740 A GB808740 A GB 808740A
Authority
GB
United Kingdom
Prior art keywords
axis
blade
blades
curve
degrees
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
GB13900/56A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB808740A publication Critical patent/GB808740A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/26—Blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/20—Hubs; Blade connections

Abstract

808,740. Screw propellers helicopter rotors. REIMBERT, M. May 4, 1956 [May 9, 1955; Jan. 25, 1956], No. 13900/56. Classes 4 and 114. [Also in Group XXVI] In a screw propeller or helicopter rotor having an axis of symmetry and blades the tips of which are located at the rear of their roots, any section of the pressure face of a blade in a plane passing through the axis, is a curve, all the tangents to which make with the axis forwardly directed angles of 45 degrees or less. The ship's propeller shown comprises four blades 1 inclined towards the rear from their points of attachment to the hub 2. Any plane through the propeller axis X .. Y and the pressure face of a blade makes a curve such as C1, Fig. 3, of which all the tangents make an angle of 45 degrees or less with the axis X .. Y : as shown the curve is a parabola and the blade ends when the tangent makes an angle of 45 degrees with the axis. The pressure faces of the blades are concave towards the axis their curves forming a logarithmic or other spirals and the tips of the blades lie on a circle concentric with the axis X .. Y. The front and rear outlines of the pressure surfaces of the blade are curves joined to the cylinder of thrust by an arc of a helix. The leading edge of each blade overlaps the trailing edge of the adjacent blade. The hub 2 may be omitted and the blades be attached directly to one another.
GB13900/56A 1955-05-09 1956-05-04 Improvements in bladed rotors, and in particular in ship propellers Expired GB808740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR808740X 1955-05-09

Publications (1)

Publication Number Publication Date
GB808740A true GB808740A (en) 1959-02-11

Family

ID=9253102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13900/56A Expired GB808740A (en) 1955-05-09 1956-05-04 Improvements in bladed rotors, and in particular in ship propellers

Country Status (1)

Country Link
GB (1) GB808740A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000955A (en) * 1975-09-22 1977-01-04 Kiyoshi Tokutomi Fan with wide curved blades
GB2166808A (en) * 1984-11-10 1986-05-14 Daimler Benz Ag A turbine rotor
GB2209370A (en) * 1987-09-01 1989-05-10 Mtu Muenchen Gmbh Propeller
US6481267B1 (en) 1999-11-20 2002-11-19 Stable Micro Systems Limited Rheometer
CN103723260B (en) * 2014-01-02 2017-02-01 周宗伟 Marine propeller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000955A (en) * 1975-09-22 1977-01-04 Kiyoshi Tokutomi Fan with wide curved blades
GB2166808A (en) * 1984-11-10 1986-05-14 Daimler Benz Ag A turbine rotor
GB2166808B (en) * 1984-11-10 1989-08-16 Daimler Benz Ag A turbine rotor
GB2209370A (en) * 1987-09-01 1989-05-10 Mtu Muenchen Gmbh Propeller
US6481267B1 (en) 1999-11-20 2002-11-19 Stable Micro Systems Limited Rheometer
CN103723260B (en) * 2014-01-02 2017-02-01 周宗伟 Marine propeller

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