GB794936A - Variable pitch marine propeller - Google Patents

Variable pitch marine propeller

Info

Publication number
GB794936A
GB794936A GB1322056A GB1322056A GB794936A GB 794936 A GB794936 A GB 794936A GB 1322056 A GB1322056 A GB 1322056A GB 1322056 A GB1322056 A GB 1322056A GB 794936 A GB794936 A GB 794936A
Authority
GB
United Kingdom
Prior art keywords
blade
variable pitch
centres
per cent
length
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
GB1322056A
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.)
Lips NV
Original Assignee
Lips NV
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 Lips NV filed Critical Lips NV
Publication of GB794936A publication Critical patent/GB794936A/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
    • B63H3/00—Propeller-blade pitch changing

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)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

794,936. Variable pitch marine propellers. LIPS, N. V. April 30, 1956 [May 4, 1955], No. 13220/56. Class 114. In a variable pitch marine propeller, the centres of pressure of the blade sections along the whole or the greater part of the radial length thereof are practically stationary for varying angles of attack and the locus of the centres is a straight line that coincides with or is close to the axis about which the blade turns during pitch changing movements. For a change in the angle of attack of from -8 degrees to + 8 degrees, the shift in the centre of pressure is preferably about 2 per cent and not more than 3 per cent of the chord length of the section. As shown the centres lie on a straight line 10 close to the longitudinal axis 8 of the blade, the distance being within 5 per cent of the length of the greatest chord line of the blade. Preferably the sections are aerofoil in shape and symmetrical about a straight mean camber line.
GB1322056A 1955-05-04 1956-04-30 Variable pitch marine propeller Expired GB794936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL196994A NL89754C (en) 1955-05-04 1955-05-04 Ship propeller with adjustable blades.

Publications (1)

Publication Number Publication Date
GB794936A true GB794936A (en) 1958-05-14

Family

ID=1834297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1322056A Expired GB794936A (en) 1955-05-04 1956-04-30 Variable pitch marine propeller

Country Status (3)

Country Link
DK (1) DK90879C (en)
GB (1) GB794936A (en)
NL (1) NL89754C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190136865A1 (en) * 2017-11-09 2019-05-09 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Aero/Hydro-dynamically Balanced Passively Varying Pitch Propeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190136865A1 (en) * 2017-11-09 2019-05-09 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Aero/Hydro-dynamically Balanced Passively Varying Pitch Propeller

Also Published As

Publication number Publication date
DK90879C (en) 1961-05-08
NL89754C (en) 1958-12-15

Similar Documents

Publication Publication Date Title
US2011821A (en) Propeller wheel
GB1475074A (en) Hydrofoil sailing vessels
GB1467758A (en) Main and auxiliary propeller arrangement
CH327975A (en) Hub for propellers, pumps or water turbines with propeller blades with controllable pitch
GB794936A (en) Variable pitch marine propeller
ES444150A1 (en) Marine screw
GB1515024A (en) Catamaran
GB325538A (en) Improvements in propellors for driving of ships and the like
GB544239A (en) Ships automatic stability unit
ES432317A1 (en) Boat hull with spherical dome
GB452709A (en) Ship's screw propellor
SU779159A1 (en) Stern section of twin-shaft ship hull
GB878345A (en) Stern bulb or blister for single-screw ships
CH500862A (en) Adjusting device for the blades of a ship's propeller, a Kaplan turbine or the like, with a hydraulic servomotor arranged in the blade hub or the shaft
GB191325230A (en) Improvements in Propellers.
GB227064A (en) Improvements in & relating to screw propellers
GB313694A (en) Improvements relating to screw propellers
GB480866A (en) Improvements in or relating to paddle wheel propellers for ships
SU146201A1 (en) Adjustable pitch propeller
GB504877A (en) Improvements in or relating to guides for blade-wheel propellers
GB988595A (en) Improvements in and relating to a reversing installation for ship propellers.
GB641667A (en) A ship's hull stern
CA493971A (en) Marine propellers with variable pitch blades
Minsaas et al. Lifting surface corrections for 3 bladed optimum propellers
GB595469A (en) Improvements in or relating to ships' screw propellers with hollow blades