IL72194A - Propulsion system for ships - Google Patents

Propulsion system for ships

Info

Publication number
IL72194A
IL72194A IL7219484A IL7219484A IL72194A IL 72194 A IL72194 A IL 72194A IL 7219484 A IL7219484 A IL 7219484A IL 7219484 A IL7219484 A IL 7219484A IL 72194 A IL72194 A IL 72194A
Authority
IL
Israel
Prior art keywords
propeller
rotors
shaft
free
rotor
Prior art date
Application number
IL7219484A
Other versions
IL72194A0 (en
Original Assignee
Fishler Yehoshua
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 Fishler Yehoshua filed Critical Fishler Yehoshua
Priority to IL7219484A priority Critical patent/IL72194A/en
Publication of IL72194A0 publication Critical patent/IL72194A0/en
Publication of IL72194A publication Critical patent/IL72194A/en

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Propultion system for ships The following description of the invention relates to improvements in ship's propultion systems and is particulary concerned with a ship azimutal propeller (with or without duct).
The intention in the following invention is to set up a combination of a propeller with two free rotating rotrs, conected and rotating on the same shaft.
-One rotor, for the propeller to enlarge the water massa influenced by the propeller, to increase the water pressure on the for side of the propeller disk decreasing the propeller load, and to equalize and smooth up the water inflow to the propeller disk.
-Second rotor after the propeller to reduce the rotation losses in the propeller race.
This combination of propeller and two rotors improves the propeller efficiency without enlarging the propeller diameter and/or chanqing the transmition gear by'forming a turbo charger in optimal di mentioned relations.
Therefor considerable amount of energy might be saved when compared to the already known ship jD pultion systems.
A good up to date literature search, carried by Ir. J.J. Muntjewerf, Marin Waqeninqen Holland named: "propultion research by Model Testing" is published in: "jahrbuch shiffbautechnischen geselschaft 77(1983) gives an over view on all the inovative sugestins for improving fuel efficiency currently known.

Claims (5)

The construction of the installation is described in the following drawing: The energy is deliverd from the engine by the propeller shaft part 1, which via bevelgears turns the free running propeller bush part 3. The bush part 3 is mounted on a free running shaft member number 6. On both sides of the free running shaft part no.6 are mounted the two rotors, rotor number 5 on the for side and rotor number 4 on the aft side situated in the rotating propeller race, and turn ng free together with rotor number 5. The diameter and the longitudinal positions of the rotors no.4 and 5.are optimized and di mentioned to be adopted to the propeller race. All this installation is mounted on an optimized shaft housing part no. 2. A protector number 7 is recomended. A duct around the whole installation to accelerate the water inflow to the propeller might in combination with the rotors improve even more the efficiency of the system. Claims_
1. General combination of non conventional propultion system composing of a propeller and two rotp s corectly dimentioned in their mutual relations, the first rotor for the propeller and the second after the propeller.
2. Arrangement as described in 1 charecterized in that the two rotors, the one for the propeller and the' second after the propeller are mounted on one shaft which is free to rotate ,
3. Arrangement according to 1 and 2 charecterized in that the propeller is mounted on a bevel gear driven verticaly from the engine and turning free on the shaft of the two rotors.
4. Arrangement according to 1 to 3 situated in shft housing for what is known as azimoutal or Z propultion systems, Eventualy with protector.
5. Arrangement according to 1 to 4 situated for or after a duct in such a way that the rotors and the .duct has mjtual positive influence on each other and on the
IL7219484A 1984-06-21 1984-06-21 Propulsion system for ships IL72194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL7219484A IL72194A (en) 1984-06-21 1984-06-21 Propulsion system for ships

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL7219484A IL72194A (en) 1984-06-21 1984-06-21 Propulsion system for ships

Publications (2)

Publication Number Publication Date
IL72194A0 IL72194A0 (en) 1984-10-31
IL72194A true IL72194A (en) 1994-08-26

Family

ID=11055150

Family Applications (1)

Application Number Title Priority Date Filing Date
IL7219484A IL72194A (en) 1984-06-21 1984-06-21 Propulsion system for ships

Country Status (1)

Country Link
IL (1) IL72194A (en)

Also Published As

Publication number Publication date
IL72194A0 (en) 1984-10-31

Similar Documents

Publication Publication Date Title
US4642059A (en) Marine contra-rotating propeller apparatus
CA1231008A (en) Marine contra-rotating propeller apparatus
US20080089786A1 (en) Counter-Rotating Integrated Propeller Assembly
US6152791A (en) External electric drive propulsion module arrangement for swath vessels
JPS55140697A (en) Propelling device for ship
US3976027A (en) Strut drive mechanism
GB1385200A (en) Tow-craft for swimmer
US4798547A (en) Fuel efficient propulsor for outboard motors
IL72194A (en) Propulsion system for ships
US7192321B2 (en) Marine inboard/outboard system
EP0406451A4 (en) Marine propulsion apparatus
US6971932B2 (en) Marine inboard/outboard system
Guillemette et al. Proposed optimal controller for the Canadian patrol frigate diesel propulsion system
CN212766698U (en) Amphibious propulsion device
IE34004B1 (en) Improvements in or relating to internal combustion engines
CN2312876Y (en) Multi-row-shaft type screw propeller mover
SU1082682A1 (en) Ship water-jet propeller plant
Rains et al. Hydrodynamics of podded ship propulsion
SU1527091A1 (en) Ship propulsion system
RU2041134C1 (en) Thruster
Butler AN ADVANCED CONCEPT FOR PROPELLER‐DRIVEN SURFACE EFFECT SHIPS (SES)
JPS5975896A (en) Marcantile marine combining ocean sailing and ice-breaking sailing
RU1798251C (en) Watercraft rotary propulsion device
SU844480A1 (en) Ship combination power plant
CN113697072A (en) Amphibious propulsion device

Legal Events

Date Code Title Description
RH Patent void