GB496700A - Improvements relating to screw and like propellers - Google Patents

Improvements relating to screw and like propellers

Info

Publication number
GB496700A
GB496700A GB22768/37A GB2276837A GB496700A GB 496700 A GB496700 A GB 496700A GB 22768/37 A GB22768/37 A GB 22768/37A GB 2276837 A GB2276837 A GB 2276837A GB 496700 A GB496700 A GB 496700A
Authority
GB
United Kingdom
Prior art keywords
lip
blade
screw
trailing edge
propellers
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
GB22768/37A
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
Priority to GB22768/37A priority Critical patent/GB496700A/en
Publication of GB496700A publication Critical patent/GB496700A/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
    • B63H1/28—Other means for improving propeller efficiency
    • 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
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • 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
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • B64C11/22—Solid blades

Abstract

496,700. Screw propellers. WAWN, A. Aug. 19, 1937, No. 22768. [Class 114] A screw-propeller blade is provided with an incurved rearwardly projecting lip extending along the middle portion of the trailing edge. The lip a, formed in one with the. blade c, extends backwardly in the direction of the driving face f, the lip g being a flattened convex arc following the lines of the trailing edge band transversely has an outer convex curve h and an inner convex curvature which merges into the face f. Alternatively the lip a<1> is formed separately from the blade c and is secured thereto by screws k which are riveted flush at n with the blade surface. The recesses m are filled in after assembly. The length of the lip is preferably less than one-third the blade length but does not exceed one-half.
GB22768/37A 1937-08-19 1937-08-19 Improvements relating to screw and like propellers Expired GB496700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB22768/37A GB496700A (en) 1937-08-19 1937-08-19 Improvements relating to screw and like propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22768/37A GB496700A (en) 1937-08-19 1937-08-19 Improvements relating to screw and like propellers

Publications (1)

Publication Number Publication Date
GB496700A true GB496700A (en) 1938-12-05

Family

ID=10184757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22768/37A Expired GB496700A (en) 1937-08-19 1937-08-19 Improvements relating to screw and like propellers

Country Status (1)

Country Link
GB (1) GB496700A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952601A (en) * 1974-12-18 1976-04-27 United Technologies Corporation Helicopter rotor blade balancing method
US4801242A (en) * 1986-07-21 1989-01-31 Samsung Electronics Ltd. Fin attachment for microwave oven dispersing fans
US4892460A (en) * 1989-01-30 1990-01-09 Volk Steve J Propeller breeze enhancing blades for conventional ceiling fans
US5328329A (en) * 1993-07-06 1994-07-12 Hudson Products Corporation Fan blade width extender
US5492448A (en) * 1993-03-13 1996-02-20 Westland Helicopters Limited Rotary blades
US5791874A (en) * 1997-01-23 1998-08-11 Brunswick Corporation Marine propeller with adjustable cupping
WO2008095259A1 (en) * 2007-02-08 2008-08-14 Veem Engineering Group Pty Ltd Marine propeller pitch adjustment means

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952601A (en) * 1974-12-18 1976-04-27 United Technologies Corporation Helicopter rotor blade balancing method
US4801242A (en) * 1986-07-21 1989-01-31 Samsung Electronics Ltd. Fin attachment for microwave oven dispersing fans
US4892460A (en) * 1989-01-30 1990-01-09 Volk Steve J Propeller breeze enhancing blades for conventional ceiling fans
US5492448A (en) * 1993-03-13 1996-02-20 Westland Helicopters Limited Rotary blades
US5328329A (en) * 1993-07-06 1994-07-12 Hudson Products Corporation Fan blade width extender
US5791874A (en) * 1997-01-23 1998-08-11 Brunswick Corporation Marine propeller with adjustable cupping
WO2008095259A1 (en) * 2007-02-08 2008-08-14 Veem Engineering Group Pty Ltd Marine propeller pitch adjustment means
EP2117921A1 (en) * 2007-02-08 2009-11-18 Veem Engineering Group Pty.Ltd. Marine propeller pitch adjustment means
AU2008213740B2 (en) * 2007-02-08 2013-02-07 Veem Ltd Marine propeller pitch adjustment means
CN101616839B (en) * 2007-02-08 2013-03-13 维姆工程集团有限公司 Marine propeller pitch adjustment means
EP2117921A4 (en) * 2007-02-08 2013-07-24 Veem Engineering Group Pty Ltd Marine propeller pitch adjustment means
US8517683B2 (en) 2007-02-08 2013-08-27 Veem Engineering Group Pty Ltd. Marine propeller pitch adjustment means

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