FR2278559A1 - Planing boat having stepped hull bottom - of tunnel shape for trapping air cushion - Google Patents
Planing boat having stepped hull bottom - of tunnel shape for trapping air cushionInfo
- Publication number
- FR2278559A1 FR2278559A1 FR7425228A FR7425228A FR2278559A1 FR 2278559 A1 FR2278559 A1 FR 2278559A1 FR 7425228 A FR7425228 A FR 7425228A FR 7425228 A FR7425228 A FR 7425228A FR 2278559 A1 FR2278559 A1 FR 2278559A1
- Authority
- FR
- France
- Prior art keywords
- hull
- air cushion
- planing
- tunnel shape
- hull bottom
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
- B63B2001/202—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface divided by transverse steps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Stable planing is possible with outboard motor boats having this hull design, in which air is forced under the hull via one or more openings in the planing step. The air may be supplied from ram intakes above a forward deck, and is trapped under the hull due to the tunnel shape of the hull bottom, the shape being accentuated by side keels or air cushion sidewalls extending aft from the step. During planing, the air cushion is set up both force and aft of the step, and the hull may contact the water at three areas, namely two side areas forward of the step and a third area at the stern end of a central keel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7425228A FR2278559A1 (en) | 1974-07-19 | 1974-07-19 | Planing boat having stepped hull bottom - of tunnel shape for trapping air cushion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7425228A FR2278559A1 (en) | 1974-07-19 | 1974-07-19 | Planing boat having stepped hull bottom - of tunnel shape for trapping air cushion |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2278559A1 true FR2278559A1 (en) | 1976-02-13 |
FR2278559B1 FR2278559B1 (en) | 1979-10-12 |
Family
ID=9141505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7425228A Granted FR2278559A1 (en) | 1974-07-19 | 1974-07-19 | Planing boat having stepped hull bottom - of tunnel shape for trapping air cushion |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2278559A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984001338A1 (en) * | 1982-10-06 | 1984-04-12 | Manche Atel Chantiers | Fast boat |
CN110450903A (en) * | 2019-07-05 | 2019-11-15 | 哈尔滨工程大学 | The vertical stream transiens semiplaning craft of one kind |
-
1974
- 1974-07-19 FR FR7425228A patent/FR2278559A1/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984001338A1 (en) * | 1982-10-06 | 1984-04-12 | Manche Atel Chantiers | Fast boat |
FR2534221A2 (en) * | 1982-10-06 | 1984-04-13 | Manche Atel Chantiers | DEVICE FOR PROPULSION AND DIRECTION OF A SHIP |
EP0105819A1 (en) * | 1982-10-06 | 1984-04-18 | Groupement D'etudes Et De Recherches Navales (G.E.R.N.) | Fast boat |
CN110450903A (en) * | 2019-07-05 | 2019-11-15 | 哈尔滨工程大学 | The vertical stream transiens semiplaning craft of one kind |
CN110450903B (en) * | 2019-07-05 | 2021-04-27 | 哈尔滨工程大学 | Longitudinal flow transition type semi-planing boat |
Also Published As
Publication number | Publication date |
---|---|
FR2278559B1 (en) | 1979-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MD | Transfer of rights in case of death | ||
ST | Notification of lapse |