EP0270544A1 - Dispositif de propulsion a inertie conditionnee du fluide. - Google Patents
Dispositif de propulsion a inertie conditionnee du fluide.Info
- Publication number
- EP0270544A1 EP0270544A1 EP19860905309 EP86905309A EP0270544A1 EP 0270544 A1 EP0270544 A1 EP 0270544A1 EP 19860905309 EP19860905309 EP 19860905309 EP 86905309 A EP86905309 A EP 86905309A EP 0270544 A1 EP0270544 A1 EP 0270544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- jet
- acceleration
- airfoil
- thrust
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
- B63H11/103—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means to increase efficiency of propulsive fluid, e.g. discharge pipe provided with means to improve the fluid flow
Definitions
- the Fluid Acceleration Body essentially consists of one or more hollow bodies of revolution, containing the fluid drive members, these elements being set in rotational movement by the action of one or more motor torques.
- this unit exerts a mainly centrifugal acceleration effect.
- the centrifugal force is essential to this spiral path of the molecules, and used to advantage for the ordonnan cer against the walls which accompany them as much as possible in their movement.
- the blades and drive members do not necessarily have steps like those of usual propellers and pumps. To communicate a centrifugal acceleration, they are advantageously axial. They point out, with the slip due to the near flow, the work of the blades of impellers. The flow is ensured by the support which takes the fluid on the flared surfaces and on the airfoil. However, the blades equipped with steps contribute advantageously to the priming of the flow, to its regulation, to a supercharging of the device if the overall acceleration is not too strong.
- the distribution of accelerated, conditioned fluid in the airfoil creates conditions different from those of a propeller encountering a fluid in nature. This is important for the cavitation problem.
- the fluid vein is no longer stretched, but only compressed, part of the sail surfaces receive the fluid without leading edge. blossoming of the airfoil, the multiplication of the fins, increasing the total surface, reduce the unit pressures.
- the Wing by its ability to make the trajectories tend towards the privileged direction which characterizes it, adapts its forms to the desired goal: reverse wing, lateral thrust, pumping wing.
- the same device having several wings the distribution is done by to each other by translation of the members for example.
- the l the suction is done in the opposite direction to the thrust and which advantageously produces an open frusto-conical jet, consisting of sufficiently numerous elementary jets, can, directing it against a wall, attach to it, thanks to this hydrodynamic suction cup.
- Overflowing members prevent the device from coming into contact with the wall, causing the interruption of the phenomenon.
- Jets forming a waterproof curtain, directed against solid or liquid surfaces, or other curtains, allow to participate in the partitioning of pressurized volumes, to bring the unalterable flexibility that may be necessary.
- a succession of curtains allows to add tolerable pressure differences for each of them .
- the device according to the invention makes it possible, by its principle, to dodge significant friction, there are still unnecessary, inevitable, penalizing effects.
- the care taken in drawing the profiles of hollow bodies, of blades and their distribution the care taken in polishing surfaces, in the use of lubricated or self-lubricating materials for the surfaces concerned, has an impact on performance.
- the best way to make the device according to the invention, shown in Fig. 1, consists of a streamlined marine propellant, of the hydro-jet type, fixed inside the ship, in which the acceleration of the fluid takes place in accordance with
- the acceleration member consists of a hollow body of revolution with a flared profile, offering an increasing internal diameter (1), carrying eight profiled axial blades (2), and a propeller with two blades. orientable (3).
- the vacuum which would be created in the center is streamlined, a shutter plate (5) closing this shroud (4).
- the shutter plate has its periphery secured to the hollow body, and fitted with orifices or passes the fluid.
- acceleration member forms an integral unit of the transmission axis coming to be centered in a bearing (6) integral with the airfoil. This member is wrapped. a fixed cover (7), crossed by the shaft at (8), the seal being ensured by a cable gland.
- This fairing open in the direction of the supply, fixed nozzle shape at (9), at the entry of the acceleration device.
- Semi-tight seals (10) and (10 bis) delimit an interstice provided with vents (11), allowing the water to be evacuated by centrifugation.
- the airfoil consists of a hollow body of revolution (13) centered on the same axis, made integral with the previous fairing, and fixed to the ship .
- the hollow body carries twelve decentrifugation fins (14) connected to the centering bearing.
- a conduit (15) passing behind a fin makes it possible to act on the pressure in the center.
- a cone (16) groups the tairas element jets to evacuate them outside.
- a folding return elbow (17) reverses the gait, the fins have been tilted so that the path of the accelerated fluid hitting them is in a plane perpendicular to their surface, and they have also been formed to cause the jets to converge. in the cone.
- the suction is arranged to work well whatever the speed reached. It is provided with grids limiting the size of the foreign bodies passing through the device. Evacuation is done at the rear of the ship, preferably in semi-immersion, allowing priming without requiring other arrangements.
- the existing technique offers the possibility of a step forward taking place inside the ship to evacuate, more easily in some cases, under the hull of the ship. It is important to provide the means of disassembly, cleaning, adjustment of the supply flow, safety valve.
- the main advantages being to have a remarkably constant thrust, whatever the speed taken by the ship, of a device which is not very dangerous, not very vulnerable, requiring little draft.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86905309T ATE60018T1 (de) | 1985-09-05 | 1986-09-02 | Vortriebsvorrichtung mit gerichteter traegheit des fluidums. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8513312A FR2586645B1 (fr) | 1985-09-05 | 1985-09-05 | Dispositif de propulsion a inertie conditionnee du fluide |
FR8513312 | 1985-09-05 | ||
FR8600831 | 1986-01-20 | ||
FR8600831A FR2593138B2 (fr) | 1985-09-05 | 1986-01-20 | Dispositif de propulsion a inertie conditionnee du fluide. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0270544A1 true EP0270544A1 (fr) | 1988-06-15 |
EP0270544B1 EP0270544B1 (fr) | 1991-01-16 |
Family
ID=26224708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860905309 Expired - Lifetime EP0270544B1 (fr) | 1985-09-05 | 1986-09-02 | Dispositif de propulsion a inertie conditionnee du fluide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0270544B1 (fr) |
DE (1) | DE3677021D1 (fr) |
FR (1) | FR2593138B2 (fr) |
WO (1) | WO1987001353A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6626638B2 (en) | 1999-07-29 | 2003-09-30 | Jonathan B. Rosefsky | Ribbon drive power generation for variable flow conditions |
US6527520B2 (en) | 1999-07-29 | 2003-03-04 | Jonathan B. Rosefsky | Ribbon drive pumping with centrifugal contaminant removal |
CA2380623A1 (fr) | 1999-07-29 | 2001-02-08 | Jonathan B. Rosefsky | Systeme et procede de propulsion avec entrainement a ruban |
ES2407904B1 (es) * | 2010-10-13 | 2014-09-02 | Fº JAVIER PORRAS VILA | Submarino-avión |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1498919A (en) * | 1923-06-19 | 1924-06-24 | Jensen Harald | Hydraulic propulsion arrangement for ships |
GB1011203A (en) * | 1961-08-09 | 1965-11-24 | F E Parsons Corp | Marine craft propelling device |
FR1408168A (fr) * | 1963-10-08 | 1965-08-13 | Propulseur hydrodynamique à roue hélicoïdale et à translation radiale, permettant l'inversion du sens de propulsion | |
US3405526A (en) * | 1967-03-01 | 1968-10-15 | Twin Disc Inc | Multiple stage, hydraulic jet propulsion apparatus for water craft |
DE1901374A1 (de) * | 1969-01-13 | 1970-10-01 | Hermann Ebner | Wasserstrahlantrieb fuer Wasserfahrzeuge |
US3678689A (en) * | 1970-09-04 | 1972-07-25 | Samford P Ishiwata | Submerged multistage pump usable as propulsion unit |
GB1319044A (en) * | 1972-02-25 | 1973-05-31 | Hodgson D | Pneumatic turbine propulsion unit for vessels |
IT987301B (it) * | 1973-01-25 | 1975-02-20 | Generali Vittorio | Pompa a idrogetto per piccole imbarcazioni |
US3970030A (en) * | 1975-09-25 | 1976-07-20 | Rockwell International Corporation | Internal thrust reverser |
DE2625818A1 (de) * | 1976-06-09 | 1977-12-22 | Rockwell International Corp | Intensivsauglaufrad |
-
1986
- 1986-01-20 FR FR8600831A patent/FR2593138B2/fr not_active Expired
- 1986-09-02 DE DE8686905309T patent/DE3677021D1/de not_active Expired - Lifetime
- 1986-09-02 WO PCT/FR1986/000294 patent/WO1987001353A1/fr active IP Right Grant
- 1986-09-02 EP EP19860905309 patent/EP0270544B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO8701353A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2593138B2 (fr) | 1988-03-18 |
WO1987001353A1 (fr) | 1987-03-12 |
EP0270544B1 (fr) | 1991-01-16 |
DE3677021D1 (de) | 1991-02-21 |
FR2593138A2 (fr) | 1987-07-24 |
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