GB1200162A - Improvements in blades for screw-propellers and lifting rotors - Google Patents

Improvements in blades for screw-propellers and lifting rotors

Info

Publication number
GB1200162A
GB1200162A GB2315066A GB2315066A GB1200162A GB 1200162 A GB1200162 A GB 1200162A GB 2315066 A GB2315066 A GB 2315066A GB 2315066 A GB2315066 A GB 2315066A GB 1200162 A GB1200162 A GB 1200162A
Authority
GB
United Kingdom
Prior art keywords
screw
opening
propellers
blades
propeller
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
GB2315066A
Inventor
Robert Filmer Bridgland
Paul Marriage
Stephen Waldron Brown
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 GB2315066A priority Critical patent/GB1200162A/en
Publication of GB1200162A publication Critical patent/GB1200162A/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
    • 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
    • B64C11/24—Hollow blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydraulic Turbines (AREA)

Abstract

1,200,162. Screw-propellers. R. F. BRIDGLAND, P. MARRIAGE and S. W. BROWN. 4 Aug., 1967 [24 May, 1966], No. 23150/66. Heading B7V. [Also in Division F2] A blade 2 for either a marine, or aircraft, screw-propeller or a helicopter lifting-rotor is hollow and has perforations 7 or slots in the leading surface so that owing to an opening 9 at the tip fluid in the boundary layer is sucked away by centrifugal action. Optionally, either the blade is curved longitudinally in a direction opposite to the axial thrust produced by the propeller, or rotor, or fins are provided in the opening 9 such that additional axial-thrust is developed in exchange for energy in the fluid approaching the opening.
GB2315066A 1966-05-24 1966-05-24 Improvements in blades for screw-propellers and lifting rotors Expired GB1200162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2315066A GB1200162A (en) 1966-05-24 1966-05-24 Improvements in blades for screw-propellers and lifting rotors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2315066A GB1200162A (en) 1966-05-24 1966-05-24 Improvements in blades for screw-propellers and lifting rotors

Publications (1)

Publication Number Publication Date
GB1200162A true GB1200162A (en) 1970-07-29

Family

ID=10190975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2315066A Expired GB1200162A (en) 1966-05-24 1966-05-24 Improvements in blades for screw-propellers and lifting rotors

Country Status (1)

Country Link
GB (1) GB1200162A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110307A (en) * 1981-11-20 1983-06-15 Noordvos Schroeven Bv A ship's propellor having two or more perforated hollow blades
EP1543241A1 (en) 2002-09-27 2005-06-22 Marine Current Turbines Limited Fatigue resistant large hollow rotor blade for underwater energy converter
WO2008040049A1 (en) * 2006-10-02 2008-04-10 Colin David Chamberlain Safety propeller
DE102007058811A1 (en) * 2007-12-05 2009-06-18 INOTEC GmbH Transport- und Fördersysteme Boat propeller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110307A (en) * 1981-11-20 1983-06-15 Noordvos Schroeven Bv A ship's propellor having two or more perforated hollow blades
EP1543241A1 (en) 2002-09-27 2005-06-22 Marine Current Turbines Limited Fatigue resistant large hollow rotor blade for underwater energy converter
WO2008040049A1 (en) * 2006-10-02 2008-04-10 Colin David Chamberlain Safety propeller
US8491268B2 (en) 2006-10-02 2013-07-23 Colin David Chamberlain Safety propeller
DE102007058811A1 (en) * 2007-12-05 2009-06-18 INOTEC GmbH Transport- und Fördersysteme Boat propeller
DE102007058811B4 (en) * 2007-12-05 2009-12-24 INOTEC GmbH Transport- und Fördersysteme Boat propeller

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees