Surfing with fin |
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IPC classes for russian patent Surfing with fin (RU 2104898):
  
 The hull / 2023623
 The hull / 2099236
The invention relates to shipbuilding and touches the hull, in particular, can be used on small rowing boats for hunters, fishermen and tourists
 Collapsible enclosure tourist vessel / 2086458
 Platform-wholehog / 2081030
The invention relates to boats, using motion energy of agitation of the water surface, and for floating platforms, raised on poles above the water surface
Catamaran / 2071209
 Sports and pleasure craft / 2070526
 Beauty cruise ship / 2061622
 Skis for transportation on water / 2048378
The invention relates to watercraft, and in particular to ski for movement on the water
 Water-ski trainer / 2048377
The invention relates to sports equipment, in particular to devices for training water-ski lovers
 Exercise device with a muscular drive / 2047537
The invention relates to shipbuilding, and is intended for entertainment on the water and underwater observations at small depths
 Water bicycle / 2252895
Water bicycle has hollow body with seat, load bearing member in form of V-shaped hydrofoil connected with handle-rods which are mounted on body and propulsor made in form of two tail cetacean fins. Levers, synchronizer and propulsor fins are interconnected by means of elastomer joints. Body, wing and fins are made from composite materials.
 Shipboard complex and descent submersible vehicle / 2262465
Proposed dismountable assembled submersible vehicle includes dismountable assembled catamaran with side inflatable sectional floats, portable house mounted above them and manned submersible vehicle located in between them and suspended from catamaran by means of winch-and-rope system controlled from submersible vehicle. Proposed complex includes also ramp-frame mounted above floats and inclined by means of inflatable mat and provided with built-in rolls for lateral lowering on shore or for launching in detachable bottom-trough of said house which may be used as floating or ground house. Descent submersible vehicle has platform with detachable wheels mounted over edges on side of floats which form trailer together with platform for ground transportation of house. Platform consists of longitudinal extended members interconnected by means of transversal pipes and/or rods (at varying number) for obtaining required ballasting before submergence of vehicle. Seats with transparent hoods are located along lateral sides of platform; their lower edges are located in area of passenger waist.
 Small-sized high-speed two-seated boat-hydrocycle / 2264949
Proposed boat-hydrocycle has hull, reversible steering gear and motion control unit connected with engine and with reversible steering gear; driver and passenger seats are located on either side from CL at level close to WL. Boat-hydrocycle control unit is located between seats and is made in form of joy stick kinematically connected with rudder and with control system kinematically coupling the engine and reversible gear control. Control system is made in such form that when joy stick is inclined to "forward" from neutral position, reversible gear is shifted to "ahead running" position and engine revolutions increase in proportion to shift of joy stick and when joy stick is inclined to "sternward" from neutral position, reversible gear is shifted to "astern running" position and revolutions of engine increase also in proportion to shift of joy stick; joy stick is so connected with rudder that when it is inclined to one side, boat-hydrocycle turns to the same side and vice versa.
 High-speed motor ship / 2297359
Proposed ship has passenger seat 3 in fore section 2 which is made integral with ship's hull and is provided with hand-rests 5 and foot-rests 6, as well as water-and-air discharge passage 12 for drainage of outside water. Passage 12 is connected with ship's bottom forming transversal planing step 11. Seat is located in front of screw-rudder without reducing the viewing angle for driver. Seat ensures reclined position of passenger. Centering of ship is effected due to sternward shift of driver's seat and/or storage battery and/or fuel tank and/or luggage.
 Surface floating vehicle with motion unit / 2299830
Hull of proposed floating vehicle is made in form of rigid envelope of surface of revolution where person may be embarked. Motion unit makes the floating vehicle move on water surface. Motion unit includes starter made separately from floating vehicle and used for sending pulse for initial motion; starter is located on surface of water basin or in immediate proximity. Starter is made in form of tube.
 Water bike / 2314965
Proposed water bike has floating body and load-bearing members made in form of front hydrofoil connected with rudder secured on body and rear hydrofoil. Water bike is additionally provided with bladed propulsor made in form of monoflipper mounted behind rear hydrofoil and articulated with it by its leading edge for relative turn. Water bike is also provided with pedal drive including right-hand and left-hand levers mounted on common axle; these levers are articulated with rods connected in their turn with bladed propulsor; rear hydrofoil is immovably secured relative to body.
 Dock / 2356778
Invention relates to collapsible floating docks of adjoining water area and coastal structures. The proposed dock features a cellular design and consists of the hexagonal floating modules made from a composite material, consisting of polyurethane enclosure and compacted foamed plastic fitted there inside. Detachable fasteners represent horizontally located plates jointed by vertical rods. Aforesaid plates feature teeth bent towards the module and conic recesses made at the plate centre to receive the rod heads. A part of floating modules features recesses for mooring floating means. Note that the dock is equipped with detachable hand-rails with fasteners.
 Floating house / 2363610
Proposed flowing house has above-water and underwater parts. Underwater part represents a cylindrical base accommodating the house draft stabilising and adjusting tanks, and fluid fuel storage tanks. Aforesaid cylindrical base changes over into a funnel part terminating into wedge-shaped part. There are channels intended for mooring and/or immobile storage of minor floating vessels arranged at the level of actual water-line oscillation.
 Device to produce lift / 2376208
Proposed device comprises housing with working medium circulation channel and working medium blower arranged therein. Suction and discharge holes of aforesaid channel are arranged opposite each other on housing convex surface to allow working medium to flow around it. Aforesaid channel consists of straightening parts arranged behind suction end ahead of discharge end that feature rectangular cross section and pass into those parts which are located ahead and behind of blower, respectively. Said straightening parts feature annular cross sections.
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(57) Abstract: Usage: shipbuilding, surfing with the fin. The essence of the invention: surfing, equipped posted on its bottom aft fin having a symmetrical profile shape cross-section and arbitrary shape in plan, in its body behind the fin, at distances not exceeding 1/2 of the length of the root chord of the fin is made through the vent, and the profile of the fin in cross section has a sharp front edge and a blunt trailing edge, with the greatest thickness profile of the fin is located at a distance of 0.5-1.0 length of a chord corresponding section. The use of the invention increases the stability of the motion of the surf at high speed in terms of excitement. 3 Il. The invention relates to the field of shipbuilding and relates to the design serpengo equipped with fins. Special attention when creating serpengo on the issue of designing their fins, since in practice the problem arises simultaneously meet the requirements of hydrodynamics and strength. This problem is especially acute when designing fins serpengo who I am. The movement of the surf in these conditions is accompanied by its separation from the water surface, which leads to partial or complete exposure of the fin and high shock loads on it when entering the water. Famous surfing equipped with fins having a different shape in plan and profile for such a fin is used, as a rule, the standard symmetric aviation profiles with rounded front and a sharp trailing edge (see FUN & FUNCTION MAGAZIN, N1-4, 1992)Also known surfing fin high efficiency, which is achieved through two wings, located at the bottom edge of the fin (PCT 85/03237, A 63 C 15/05, see IMS, 1986, N3, S. 10). These wings achieved an increase in lateral forces on the fin when the motion with drift (slide) prototype. Profiles of famous fins serpengo, providing a wide range of angles shockless flow and having a relatively low profile resistance, do not possess sufficient strength for slalom driving. So for slalom profiles are used with large relative thicknesses ( = C/b of 0.1). But these profiles lead to the early development of cavitation, which is highly undesirable. WPI is the rate on the surface of the water, and on a rampage. When excited, when the fin is close to the free surface of water or crosses it, may be a breakthrough of atmospheric air on the suction surface of the fin. This phenomenon leads to abrupt change sign and magnitude of the lateral hydrodynamic forces on the fin. This effect is the stronger, the higher the relative thickness of the profile. The change of sign of the force on the fin results in the loss of stability of surfing and its overturning. The task of the invention is to improve the sustainability and stability of the motion of the surf at high running speed and under conditions of agitation on the surface of the waters by improving hydrodynamic and structural characteristics of its fin. For this purpose, a famous surfing destination, equipped with a fin placed at the rear of the bottom body surfing, having a symmetrical profile shape in cross-section and arbitrary shape in plan, the body surfing behind the fin, at a distance not exceeding half the length of the root chord of the fin is made through the vent, while the profile of the fin in cross section has a sharp front and a blunt trailing edge. And the greatest profile thickness raspologeniya for fin due to the presence of a blunt trailing edge, the cavity is vented to atmospheric air, and as a result is achieved by the proximity of the values of the coefficients of the profile drag of the proposed profile and standard povnooblenergo profile and the stability of ventilation cavity by atmospheric air, with full samewe aft bilge surfing, is provided with a ventilation hole in the housing. Large cross section profile with a blunt trailing edge, compared with the same thickness and the chord plasmaoptical profile provides improved strength characteristics of the fin. The profile of the fin is made with a tapering in the direction of the leading edge having a sharp leading edge and the location of the maximum thickness of the profile at a distance of 0.5-1.0 chord from the nose improves the cavitation characteristics, provides the distance of the development of steam cavern and the separation of flow and, consequently, decrease the resistance profile. The invention is illustrated by drawings, where Fig. 1 shows surfing with the fin of Fig.2 - profile of the fin, and Fig.3 - comparative graphs of the dependence of the hydrodynamic side force Z, acting on n the th profile curve (2). At the bottom of the case 1 surf (Fig. 1) in the aft installed the fin 2, followed at a distance not exceeding 1/2 of the length of the root chord of the fin, in the case of surfing is made through the vent 3. The symmetric profile of the fin cross-sectional with tapering toward the front edge has a sharp front edge 4 and a blunt rear edge 5 (Fig. 2). The maximum thickness of the profile is located at a distance equal to 0.5 and 1.0 times the chord length of the profile from the front edge 4. The motion of the surf in conditions of unrest, when the fin intersects the free surface or breakout occurs atmospheric air on the suction surface, the proposed shaping of the fin reduces lateral hydrodynamic forces on the profile without changing its sign (see Fig. 3). The aggregated results of the calculated and experimental studies are given in the form of curves of the lateral hydrodynamic force Z, acting on the fin when the movement surfing with the angle of drift , clearly show that surfing on the proposed technical solution abrupt change in sign of the lateral force does not occur (curve 2), in contrast to PLA the Ktsia surfing and fin allows you to increase the strength and stability of surfing with high speed and under conditions of agitation, and to provide the necessary strength characteristics of the fin. Surfing, equipped posted on its bottom aft fin having a symmetrical profile shape cross-section and arbitrary shape, characterized in that in the case of surfing, fin, at a distance not exceeding 1/2 of the length of the root chord of the fin is made through the vent, and the profile of the fin in cross section has a sharp front edge and a blunt trailing edge, with the greatest thickness profile of the fin is from its leading edge at a distance equal to 0,5 1,0 chord length of the corresponding section.
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