Propeller (screw) |
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IPC classes for russian patent Propeller (screw) (RU 2469906):
 Aircraft wing airfoil (versions) / 2461492
Invention relates to aircraft engineering. In compliance with first version, aircraft airfoil section comprises sharp leading and tailing edges as well as top and bottom contours. Bottom contour extends in straight line from leading edge to tailing edge. Top contour is located parallel with aircraft lengthwise axis to be connected with tailing edge smooth curve. In compliance with second version, aircraft airfoil section comprises sharp leading and trailing edges as well as top and bottom contours partially represented by parallel straight lines. Straight parts of top and bottom contours are connected by smooth curves with said leading and training edges. Top contour extends parallel with aircraft lengthwise axis. In compliance with third version, aircraft airfoil section comprises sharp leading and trailing edges as well as top and bottom contours. Top contour has straight section located parallel with aircraft lengthwise axis while bottom contour represents a curve smoothly connecting aforesaid wing edges.
 Method and device to move in gases or fluids / 2412082
Invention relates to device intended for generation of propellant forces for vehicles. Proposed method is characterised by drag effects on wing front surface or screw front surface wherein ram inflow on plane periphery is turned and tangential flow is created on rear plane with speed smaller than that of ram flow. Flow on rear surface front edge is directed from the root to plane lateral edge and intersect it with flow swirled long lateral edge of the plane read surface for their interaction to create force oriented along the plane. Ram flow is used to stabilise boundary layer on the plane rear surface rear edge. In compliance with the first version, aircraft cuts in propellers. Peripheral plane of propeller blade accommodates the structure of profiles with its elements. Another version of aircraft comprises wings. Structure of profiles is located on wing plane periphery.
 Propeller (versions) / 2351504
Set of inventions relates to aircraft engineering. Propeller consists of a bush and blades. In compliance with the first version, features the blade shank parts with a zero slip. In compliance with the second version, the aforesaid parts feature negative slip. In compliance with the third version, the propeller shank part is inclined lengthwise forward along the propeller motion. In compliance with the fourth version, the propeller features the tangential line to the saber-like blade, at its shank, passes behind relative to the propeller axis rotation direction.
 Helicopter / 2333867
Invention relates to rotorcrafts. The helicopter contains an airframe, an engine, a rotor and a tail rotor. The shape of the front and rear blade edges of the rotor and tail rotor represent two parabolas tangent to the circumference. The shape of lower and upper blade edges of the rotor and tail rotor is formed by intersection of two parabolas. The rotor and tail rotor blade ends are bent at the angle β≥60°. The rear edge of every blade incorporates a stabilising plane. A truncated paraboloid of revolution is arranged above the rotor blades.
 Air propeller / 2318698
Proposed propeller contains blades whose leading and trailing edges are formed by two parabolas in contact with circumference. Profile of each blade is formed by intersection of two parabolas at acute angle on leading edge. Trailing edge is provided with stabilizing plane which service serves to decrease noises. Tip of blade of propeller is bent through angle of β≥45° to direct centrifugal flow to increase thrust. Tips of propeller blades are mechanically coupled through flat springs by ring to decrease free vibrations.
 Helicopter / 2309873
Proposed helicopter is provided with main rotor, fuselage, engines and control members. Trailing and leading edges of main rotor blades are formed by intersection of two parabolas. Blade tip, 1.5 m long is bent at angle β≥60°and is provided with truncated paraboliod of revolution coaxially relative to respective main rotor either above or below the fuselage.
 Method of creating force in gaseous medium / 2306240
Proposed method of creating force in gaseous medium consists in making use of lifting member (1) in form of part of lateral surface of cylinder by forming reduced pressure on its inner side due to throwing of medium substance from inner side of lifting member (1) by rotation of group of rejecting plates (2) similar in shape to helical gear teeth and grouped in single rotor located coaxially relative to lifting member (1). To control the force thus created , lifting member with control units is shifted along rotor axis and is turned around it, thus changing the direction of force.
 Propeller blade / 2278058
Leading and trailing edges of propeller blade are formed by intersection of two parabolas or three parabolas contacting the circumference at acute angle on leading and trailing edges engageable with semi-circumference on leading and trailing edges. Provision is made for stabilizing plane in form of segment at initial value on fin tip smoothly decreasing from zero to 1/3 of length from origin of blade. Leading and trailing edges are rounded-off in shape.
 Propeller / 2256585
Proposed propeller has shaft 1 on which two hubs 2 are mounted with blades 3 secured on them. Each blade 3 is made along span at maximum thickness of profile of 0.10-0.25 of length of local chord; blades have sharp leading and trailing edges. Maximum thickness of profile is located in center of local chord. Each blade 3 is twisted relative to axis passing through centers of local chords along span. Blades 3 are secured on hubs 2 in inclined position to side opposite to rotation. Propeller may be provided with fixed cylindrical shroud embracing blades 3 and extended forward in front of blades of nose hub 2 by no less than length of blade.
 Blade profile for rotor aircraft and the vane rotor with this profile / 2191717
The invention relates to the field of aviation, in particular to the profile of the rotor blades of the aircraft, including between the front edge (1A) and trailing edge (1B) of the upper surface (2) and inner surface (3), whose locus equidistant from the points determines the bulge
 Noiseless device of manoeuvrable submarine screw-propeller / 2469905
Device of manoeuvrable submarine screw-propeller includes submarine body, driving shaft, screw propeller on telescopic shaft with hub and with curved ends of blades, circular cavity, sound-proofing steering tube. The screw propeller is installed on brackets in tube cavity and pivotally connected with driving shaft. Inner and outer surfaces of tube are covered with viscoelastic damping material, with cavity covering with wear-resistant material layer. End of the tube is provided with flange. Bodies of four hydrodraulic (pneumatical) cylinders-manipulators are rigidly fixed along flange perimetre at equal distances. Rods of cylinders-manipulators are pivotally attached to disk eccentrics. Platform with movably attached eccentrics is installed on body. Driving shaft of submarine passes through passageway in the centre of the platform.
 Floating craft of kovalev is / 2469904
Floating craft contains engine kinematically connected with propeller. The engine is made as rotor with vertical rotation shaft. The rotor is equipped with vertical and horizontal blades. Plane of undisturbed water surface is plane of symmetry for blades.
 Ship / 2463204
Invention relates to ship building. The ship comprises hull where haulage chain drive with links is installed. On the links, bafflers and shells are mounted. Lower part of chain is submerged. In the hollows formed by shells and baffles located on submerged part of chain, water is closed.
 Hydraulic cylinder with mechanical lock at piston extreme positions / 2458817
Invention relates to ship building, particularly, to propulsion/steering, rudder propeller and maneuvering propulsion devices with locking of extreme top position of the device. Hydraulic cylinder with mechanical lock of piston extreme positions comprises locking mechanism and blocks. Locking mechanism is arranged inside the piston. Several blocks fitted in piston act thereon at every position of said piston.
 Wheel-type powerhelm unit of artic voyage ship / 2456201
Invention relates to water transport. Powerhelm unit comprises two paddle wheels mounted at head and two wheels at end, paddle wheel depth adjustment device, and device to reduce negative pressure under ship in shallow water. Floats are rigidly mounted on paddle wheels in symmetry about ship centre plane. Every paddle wheel has independent-control drive. Floats extend relative to wheel axes. Paddle wheels feature variable diametre to be inscribed in truncated cone with diametre increasing from side to centre plane and axes out of ship centre plane square. Floats feature screw shape with optimum entrance angles in side zone and exit angles in ship centre plane. Floats are made up of shell cylindrical surfaces secured onto star-like discs. Toothing is made on float edges. Float paddle wheel width exceeds ship hull design waterline width. Ship head paddle wheel teeth represent hexagon barrel with cutting tools clamped therein. Device to reduce negative pressure under ship in shallow water includes aerator tube with air intakes. Paddle wheels are furnished with diffusion nozzle.
 Water-jet propeller / 2455191
Invention relates to railroad transport. Proposed propulsor consists of profiled water conduit 2 and propeller 3. Propeller is arranged at conduit inlet. Conduits integrity is broken by water intake circuit 4 at definite distance behind propeller.
 Screw propeller of kalashnikov's design / 2452653
Screw propeller comprises a hub, adjoined blades, a water scoop and water intake vanes. The blades are of convex-concave cross section. Working surfaces of blades are made in the form of spiral sections and with an angle of inclination to the lower edges of the blades. The screw surface has a hollow truncated cone, where blades are installed. The profile of the blades, evenly swirling by 180 degrees, monotonously reduces when moving away from the screw axis.
 Amphibious muscular vehicle / 2443598
Invention relates to water transport. Proposed vehicle comprises frame, drive, floating means, and foot drive elements. "П"-shape frame supports floating appliances and drive. Said drive consists of vanes fitted on axles and secured on endless belts. Said belts are arranged on drive sides to run on front and rear pulleys. Vanes are located in vertical plane due to gravity, inside inner space of the drive. Foot drive consists of pedals with flanges. Pedals are furnished with push rods moving in guides. Cams are fitted on push rod end axles to act in turn on vane heads by reciprocating feet. Aforesaid cams, locked by gravity, act on vane heads. Interaction of both foot drives and vane pitch adjustment are performed by synchroniser. The latter consists of rocker and tie rods interconnected and connected with push rods by hinged. Handrail makes operator's support.
 Catamaran / 2443592
Invention relates to ship building. Proposed catamaran comprises two hulls and stern float interconnected by connection bridge to support one or two individual-drive paddle wheels arranged on the right or left of said stern float. Every said hull features the shape of outlines in plan of flat-convex rounded profile. Said hulls are arranged in symmetry about catamaran lengthwise axis so that their flat sides are opposed. Said flat sides are located in parallel along lengthwise axis. Note here that every outline represents a straight line in vertical section.
 Ship propulsor / 2438917
Invention relates to propulsors for surface and underwater transport facilities. Ship propulsor comprises propelling screw. Top of every vane of said screw is provided with one concentric face transverse ridge arranged on screw work side. At least one propelling screw equipped with or not equipped with shroud, at least one vane and/or shroud of at least one propelling screw are provided with at least one flange fitted at the angle of attack. Said flanges are arranged in whatever point of the vane on suction and/or pressure side and/or in interlobe space.
 Propulsor / 2245278
Propulsor has two wheels of similar diameter at parallel pivot axles mounted at distance which is lesser than diameter of any wheel; blades are located between wheels and are connected with them by means of additional pivot axles.
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FIELD: transport. SUBSTANCE: propeller (screw) includes hub and blades with inlet and outlet portions. Outlet portions of blades throughout their height are made with periodical deviations of outlet edge relative to design value. Amplitude of blade outlet edge profile deviations from design value in height is maximal or equal to zero at maximum radius of blade. EFFECT: increase in screw thrust and higher rotation speed. 1 dwg
The invention is intended to drive ships, ships, and can also be used in aircraft with propeller engines, helicopters, and other mechanisms, driven by a blade propellers. The invention can also be used to increase the pressure of the fans, axial flow propeller pumps with impellers to increase the efficiency of turbines and other devices with rotating impellers, flowing liquid or gas, as well as to improve the strength characteristics, for example, the blades of the last stages of a powerful steam turbines. It is known that the efficiency of blade systems, rotating in an open or closed spaces of a liquid or gas, is limited to cutting speeds, as with increasing peripheral speed is "escaping" thread on the height of the blades on the periphery, which reduces the efficiency of the blade system. Known ways of dealing with this phenomenon is the location of the impeller rotating in the sleeve. However, this method is not applicable for aircraft propellers, screws, large vessels, since friction losses sleeve constitute a significant part of the power drive motor. Also known technical solutions for the implementation of a trailing edge of the propeller blades wavy, which partly prevents run-flow lane on ferio. Analogue of the invention is the United Kingdom patent GB 2232724 And IPC VN 1/26, publ. 19.12.1990, The prototype of the invention is a marine propulsion device according to the patent of Russian Federation №2317225, the output sections of the blades which reduce noise, starting with ½ -1/3 of the chord made with a variable up to ±15° angle exit. The disadvantage of this design solution is the reduction of the stop screw at the expense of non-optimal flow profile in each section throughout the height of the blade. The present invention is to increase the emphasis propulsion while maintaining all other characteristics of the mover. This object is achieved by special design of the blades. The design of the screw is the form of the output section and the configuration of a trailing edge of the blade height, and the amplitude deviation of the output angle of the blade from the calculated values when unstressed flow variable in height, with maximum amplitude at the hub, the minimum is not the periphery of the blade. The drawing shows a view of the blade 1 mover (not shown) and its output edge 2. The problem is solved in that the amplitude of the deviations of the profile of the blade from the calculated values of the angle of flow at each radius the height of the maximum to minimum radius of 3 blades at the hub of the propeller and minimally who or equal to zero at the maximum radius of 4 blades. Drawing lines a and B restrict the change of the amplitude deviation of the profile of the blade relative to the calculated position of a trailing edge (shown in phantom line). The technical result consists in the fact that specially made profiling the blades ensures minimal escaping or reject flow along the radius, while maintaining optimal profiling blade radius for improved strength characteristics of the blade, which allows not only to increase the stop screw, but also by increasing the stiffness of the blade to increase the frequency of rotation. The effect is achieved by the execution of the deviation of the amplitude profile from the calculated values in each section of the output profile of the blade height is variable, and the maximum value is at the hub and decreases toward the periphery in particular, for example, the linear law. The screw works as follows. Due to the different peripheral speed at the radius of the blade, the flow tends to move to a larger radius. The performance of the propeller blades with wavy edge prevents such displacement. However, if the amplitude of the output edges of the blades are deflected by the same amount (as a prototype), it leads to additional losses. In this construction, since the peripheral speed is proportional to the radius, that is, p is a linear relationship, the amplitude of the deflection of a trailing edge of the blade from the calculated values of the reduced height, which ensures maximum efficiency. Screw the proposed design will have extended range operation with a higher value of focus and efficiency. Comparative tests of the models showed that the emphasis made on the proposed law of screws 15% higher than traditional screw design. The propeller (screw)containing the hub and blades with input and output sections and output sections of the blades along the entire height performed with periodic deviations of a trailing edge relative to the calculated values, characterized in that the amplitude of the deviations of the profile trailing edge of the blade from the calculated values for the maximum height at the hub and minimum or zero at the maximum radius of the blade.
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