EP0930228A1 - Un dispositif pour invertir la poussé produite par le propulseur naval, avec la fonction de frein hydrodynamique et de gouvernail - Google Patents

Un dispositif pour invertir la poussé produite par le propulseur naval, avec la fonction de frein hydrodynamique et de gouvernail Download PDF

Info

Publication number
EP0930228A1
EP0930228A1 EP97107688A EP97107688A EP0930228A1 EP 0930228 A1 EP0930228 A1 EP 0930228A1 EP 97107688 A EP97107688 A EP 97107688A EP 97107688 A EP97107688 A EP 97107688A EP 0930228 A1 EP0930228 A1 EP 0930228A1
Authority
EP
European Patent Office
Prior art keywords
vertical
plane
fixed
propeller
main movable
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.)
Withdrawn
Application number
EP97107688A
Other languages
German (de)
English (en)
Inventor
Michele Bedendo
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 EP0930228A1 publication Critical patent/EP0930228A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry

Definitions

  • a device to reverse the screw-propeller thrust, with the functions of hydrodynamic brake and rudder is provided.
  • the present invention concerns a device that carries out three different functions: to reverse the screw-propeller thrust, hydrodynamic brake and rudder functions.
  • the first and the third functions can also be performed by a naval jet, whose power flow creates the pulsion force.
  • the rudder function is generally carried out by turning the jet flow horizontally.
  • the reversal of the propulsion force is carried out by means of a big spoon-like tool which, when placed in front of the jet flow, directs it underneath the keel of the craft.
  • no device is being used with a specific hydrodynamic brake function, a function obtained with a statical structure. Further, no ship has in use any system placed behind the propeller to reverse the screw-propeller thrust.
  • This invention seeks to provide a simple, economical and efficient device that can carry out the reversal of the screw-propeller thrust in a short time, without changing the direction of rotation of the main engine.
  • the device which is the object of the invention, can be used like a hydrodynamic brake, so that it will be possible to reduce and stop the ship headway without the engines.
  • the device operates normally like a main rudder.
  • this object is accomplished in a device, placed behind the propeller, consisting of two main movable components which can be rotated on their vertical axes. When rotating together in parallel manner they constitute the rudder. When rotating in opposite directions,thus forming an angle with its vertex on the opposite side of propeller, the device serves to reverse the screw-propeller thrust. In the above condition, with a much larger spread of the angle, and without the propulsion force of propeller, the device will operate like a hydrodynamic brake.
  • This device which is the aim of the invention, will have a number of advantages as a result. Since the two main movable components rotate together in parallel fashion, they will function as a rudder. And as the two main components constitute a directed duct for the propeller flow, the rudder effect is improved.
  • the spread of the angle formed by the two movable components it is possible to change the direction of the propeller thrust as one wishes, from a maximum inverse axial propeller thrust to a maximum side propeller thrust, as a result there will be greater advantages in steering the ship.
  • the effectiveness of the device is not connected with the naval propulsion system which is used.
  • One more advantage of the device, object of the invention is that it can be used like a hydrodynamic brake. Without the use of the propeller, by rotating the two movable components, in order to form an angle with its vertex on the opposite side of the propeller, and adjusting this angle from approximately zero to a flat angle or more, it will be possible to reduce and stop the ship headway.
  • control system of such a device, object of the invention is slightly more complex than what it is necessary for a normal main rudder, so that reliability of service is improved.
  • the main movable components which has the principal vertical surface of smaller vertical width 2, has two secondary plane vertical surfaces 9,10, one of them is fixed 10 and, with its horizontal sides, it 10 is joined to the posterior part of the horizontal free sides of the two plane-fixed surfaces 5,6 which are at right angles to the principal plane vertical surface of the smaller vertical width 2.
  • the other secondary plane vertical surface 9 is movable, and through the hinge 13 and with its front vertical side it 9 is joined to the front vertical side of the secondary plane-fixed vertical surface 10.
  • the secondary plane movable vertical surface 9 has on each of its horizontal sides, the upper and lower sides, one appendix 11 to which corrispondence, on each plane-fixed surface 5,6 at right angles, a part of circular corona-shaped area 12, whose centre angle has its vertex in the hinge 13, is missing.
  • Two trapezoidal plane surfaces 14,15 here in exploded view, parallel to the horizontal plane passing through the longitudinal axis of the device, object of the invention, form the fixed structure. These two trapezoidal plane surfaces 14,15 are placed between the propeller and the axes of rotation 7,8 outside the two main movable components.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Braking Arrangements (AREA)
  • Toys (AREA)
EP97107688A 1996-11-28 1997-05-10 Un dispositif pour invertir la poussé produite par le propulseur naval, avec la fonction de frein hydrodynamique et de gouvernail Withdrawn EP0930228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000003 IT1288511B1 (it) 1996-11-28 1996-11-28 Disposistivo che svolge le funzioni di invertitore della spinta prodotta dal propulsore navale di freno idrodinamico e di timone
ITRI960003 1996-11-28

Publications (1)

Publication Number Publication Date
EP0930228A1 true EP0930228A1 (fr) 1999-07-21

Family

ID=11399687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107688A Withdrawn EP0930228A1 (fr) 1996-11-28 1997-05-10 Un dispositif pour invertir la poussé produite par le propulseur naval, avec la fonction de frein hydrodynamique et de gouvernail

Country Status (2)

Country Link
EP (1) EP0930228A1 (fr)
IT (1) IT1288511B1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE342225A (fr) *
US1402080A (en) * 1921-04-07 1922-01-03 Mcnab Alexander Rudder
GB195301A (en) * 1922-05-25 1923-03-29 Kitchen S Reversing Rudder Com Improvements relating to reversing rudders
US1572812A (en) * 1922-09-08 1926-02-09 Rees Edmund Scott Gustave Propulsion and maneuvering of ships and aircraft
US2544642A (en) * 1946-03-14 1951-03-13 Frank R Abbott Reversing rudder for small boats

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE342225A (fr) *
US1402080A (en) * 1921-04-07 1922-01-03 Mcnab Alexander Rudder
GB195301A (en) * 1922-05-25 1923-03-29 Kitchen S Reversing Rudder Com Improvements relating to reversing rudders
US1572812A (en) * 1922-09-08 1926-02-09 Rees Edmund Scott Gustave Propulsion and maneuvering of ships and aircraft
US2544642A (en) * 1946-03-14 1951-03-13 Frank R Abbott Reversing rudder for small boats

Also Published As

Publication number Publication date
ITRI960003A1 (it) 1997-02-28
IT1288511B1 (it) 1998-09-22

Similar Documents

Publication Publication Date Title
US6152693A (en) Folding propeller
US3412705A (en) Navigational system
PL58943Y1 (en) Power unit waterborne means of transport
US7090549B2 (en) System to propel an air powered boat
JP4206339B2 (ja) 船舶の操舵構造
JPS6133758B2 (fr)
EP0930228A1 (fr) Un dispositif pour invertir la poussé produite par le propulseur naval, avec la fonction de frein hydrodynamique et de gouvernail
EP0504221B1 (fr) Dispositif de propulsion pour embarcation
GB1593607A (en) Ship's rudder arrangement
JP7742178B2 (ja) ２軸４舵船
AU2005331946A1 (en) Multi-hull watercraft with amidships-mounted propellers
US11465723B1 (en) Water vessel with propulsion arrangements having bi-directional flanking rudders with a profile for improved effectiveness
JPH0230920B2 (ja) Hakuyopuroperasochi
WO1995002535A1 (fr) Helice semi-immergee pour bateau
US3181492A (en) Rudder for marine vessels
GB2248049A (en) Steering rudder for waterborne vessels has primary and secondary blades
SU1729906A1 (ru) Подруливающее устройство
US3581699A (en) Propeller throttling device for boats
RU2053163C1 (ru) Устройство передачи мощности главного двигателя на гребные винты судна
JP3415948B2 (ja) 船舶の操船方法
KR0161319B1 (ko) 선박의 타구조
RU47322U1 (ru) Движительный узел судна ледового класса
NL1013696C1 (nl) Scheepsbeweging en koers beheersen met ÚÚn handeling.
RU2031054C1 (ru) Волновой движитель судна
RU2075422C1 (ru) Судовой гусеничный лопастной движитель

Legal Events

Date Code Title Description
GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19970721

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19990309