526results about How to "Reduce lift" patented technology

An augmented-reality helmet comprises a full-face motorcycle helmet with a look-down micro-display that projects a virtual image in-line with the helmet's chin bar. In order to accommodate the power requirements, the helmet includes a battery pack mounted at the base of the motorcyclist's skull. A wind turbine charges the batteries. Exhaust from the turbine is then deducted through the helmet to cool the battery pack and/or the motorcyclist's head. The turbine is controllable so that it can operate as a circulating fan to provide ventilation. A digital gyroscope provides a control input to a controller for operating a steerable headlight of the motorcycle to track the rider's head movements; and provides acceleration output to an algorithm that will contact emergency responders if the rider is non-responsive after a collision. A 170 degree rear-view camera is mounted within an aerodynamic fairing on the back of the helmet.

The invention discloses a road dust suppressant, which is prepared by mixing and blending 0.1-2.0% of water-soluble high molecular polymer, 20-50% of moisture absorption humectant, 1.0-5.0% of preservative, 0.5-5.0% of penetrating agent and the balance water. The road dust suppressant is a dynamic dust-proof and dust-suppressing liquid product which combines functions of wetting, bonding, permeating, adsorbing moisture and the like into a whole and has extremely strong pressurization-resistant function. The road dust suppressant has the advantages of obvious anti-evaporation performance and good water retention hygroscopicity, and dust on the road surface can be coagulated and is unlikely to fly. The road dust suppressant disclosed by the invention not only can be applied to road dust suppressing but also can be simultaneously used for the aspects, such as the mine exploration and transportation environment, storage yards of coal ash, coal and other ores, and the treatments of municipal construction earthwork dust raise.

A roofing shingle for enhanced wind/rain durability embodies two transverse lines of adhesion. A first discontinuous line of adhesive joins the butt edge of an overlying shingle to the underlying shingle. Secondly, a band of sealant adjacent the top edge of an underlying shingle seals against an overlying shingle to prevent penetration by wind driven rain to the roof deck. A reduced headlap is thereby permitted, thereby either reducing shingle size or extending shingle coverage. Exposed portions of the sealant band improve the erosion resistance of underlying shingles.

An aerodynamic control apparatus for an air vehicle improves various aerodynamic performance metrics by employing multiple spanwise flap segments that jointly form a continuous or a piecewise continuous trailing edge to minimize drag induced by lift or vortices. At least one of the multiple spanwise flap segments includes a variable camber flap subsystem having multiple chordwise flap segments that may be independently actuated. Some embodiments also employ a continuous leading edge slat system that includes multiple spanwise slat segments, each of which has one or more chordwise slat segment. A method and an apparatus for implementing active control of a wing shape are also described and include the determination of desired lift distribution to determine the improved aerodynamic deflection of the wings. Flap deflections are determined and control signals are generated to actively control the wing shape to approximate the desired deflection.

Disclosed is a self-washing closable surgical case cart apparatus, system and method. The self-washing closable surgical case cart apparatus incorporates a 360-degree universal fluid delivery system, compatible with external sources for fluid monitoring and delivery, that assures all surfaces therein may be decontaminated inexpensively, quickly, completely, and efficiently. In addition to its self-cleaning features, the design provides improved ergonomics for users as well as enhanced protection from floor-level contaminants. Methods for decontamination are also presented that take advantage of its unique features.

A blade for use in a wind turbine comprises a pressure side and suction side meeting at a trailing edge and leading edge. The pressure side and suction side provide lift to the turbine blade upon the flow of air from the leading edge to the trailing edge and over the pressure side and suction side. The blade includes one or more openings at the suction side, in some cases between the leading edge and the trailing edge. The one or more openings are configured to provide a pressurized fluid towards the leading edge of the blade, in some cases at an angle between about 0° and 70° with respect to an axis oriented from a centerline of the blade toward the leading edge.

An upper wing surface of a laminar-flow airfoil for decreasing an undesirable head-lowering pitching moment around an aerodynamic center of the airfoil. The upper wing surface includes: a convex front profile portion extending from a leading edge to a largest-thickness point located corresponding to 38% of a wing chord length. A convex central profile portion extends from the largest-thickness point to a position corresponding to 90% of the wing chord length at which a value obtained by dividing a thicknesswise difference between the position and the largest-thickness point by a distance in a direction of the wing chord from the largest-thickness point is equal to or smaller than 0.12. A concave rear profile portion extends from a position corresponding to 95% of the wing chord length to the trailing edge. The rear profile portion forms a pressure gradient is steeper than that formed by the central profile portion.

A burner assembly has a burner head and a deflector plate extending radially therefrom and across a firetube housing for supporting the burner assembly therein. The deflector plate has a plurality of angled vanes for re-directing secondary combustion air flowing through the housing. Secondary air is deflected away from a nozzle tip at the burner head to minimize lifting of the flame by the deflector plate or by a low pressure ring formed around the nozzle tip above the deflector plate for creating an area of low pressure. Preferably, a combination of the deflector plate and low pressure ring provides a stable flame positioned at the nozzle tip under low-fire and high-fire conditions enabling use of a pilotless ignition and flame sensing system which is consistent under low and high fire conditions. More preferably, the deflector plate supports the igniter and optionally a heat return tube for heat tracing of the freeze-prone burner assembly components.

A towed personal watercraft apparatus includes a submergible unit and a platform. The submergible unit comprises at least two independent vertical stabilizers and one or more hydrofoil units mounted to at least one of the vertical stabilizers. One or more of the hydrofoil units is pivotally attached to the vertical stabilizers. Pivotal attachment can include a torsion spring or roller bearing to allow the hydrofoil units to pivot or rotate about the pitch axis of the platform, thereby improving stability of the towed personal watercraft. Rotation of the hydrofoil units can be limited for functional concerns and performance. For example, rotation of the hydrofoils about the pivot can be allowed in a first direction to prevent a nose dive, while being restricted in a second direction to facilitate a launch of the watercraft out of the water. The platform includes a user mount, such as foot holds or equivalents.

The invention relates to a micro flapping rotor aircraft. A suspension joint is sleeved at the top end of a vertical keel of an aircraft body. Connecting rods of two flapping wings are respectively hinged with connecting lugs on the outer circumference of the suspension joint. The two flapping wings are installed symmetrically on the suspension joint and the rear edges of the flapping wings are in the opposite directions. A spring is sleeved on the vertical keel of the aircraft body and located below the suspension joint. An actuating cover is sleeved on the vertical keel of the aircraft body and located below the spring. One ends of the connecting rods are connected with the flapping wings through hinge joints while the other ends of the connecting rods are connected with the actuating cover through hinge joints. An electromagnetic driver is sleeved on the vertical keel of the aircraft body and located below the actuating cover. A control surface is bonded to a support arm of an undercarriage. A differential control surface and a synchronous control surface fixed on the undercarriage are distributed alternately. The magnet in the invention does not need to rotate around the center of the aircraft, so that thrust required to rotate flapping wings around the vertical keel of the aircraft body is reduced so as to improve the lifting force. And the micro flapping rotor aircraft is simple in structure and light in weight.

The invention discloses a marine riser vortex-induced vibration suppression device. The marine riser vortex-induced vibration suppression device is arranged on a marine riser. The marine riser vortex-induced vibration suppression device comprises a V-shaped front end panel and a tail fin type fairing. The V-shaped front panel board is arranged on the side, facing the marine current direction, of the marine riser. The tail fin type fairing is arranged on the side, back to the marine current, of the marine riser. The cross section of the V-shaped front end panel is V-shaped, and is tangent to the surface of the marine riser. The marine riser vortex-induced vibration suppression device has the advantages that by arranging V-shaped wing boards on the V-shaped front end panel, swinging in a small range can be achieved along with the current, incoming flow is led to be scattered, meanwhile resistance force on the marine riser due to the incoming flow can be lowered, the vortex-induced vibration can be effectively suppressed, lift force is greatly lowered, and the fatigue life of the riser is prolonged; the vortex-induced vibration suppression device has the advantages of being simple in structure, and convenient to process and install due to blocking.

A motor vehicle has at least one adjustable air-guiding device on the underbody. The air-guiding device has a cross-sectionally U-shaped duct and is adjustable between a closed position and an open position. The motor vehicle also has a radiator device with a radiator and a radiator shutter with adjustable flaps for controlling the air flow through the radiator. A control device actuates the air-guiding device depending on the position of the radiator shutter so that, irrespective of the position of the flaps of the radiator shutter, an at least approximately identical pitching moment is obtained at the motor vehicle and at the same time the aerodynamic drag is reduced.

The invention provides a ring cavity rotational flow opposite spraying structure based on an RDE combustion chamber. An axial symmetry hook face circular seam is adopted in a circular seam of an RDE,an included angle of the obtuse angle is formed between the transverse jet flow and the main jet flow direction of RDE, single-row annular cavity array cylindrical fuel spraying holes are evenly distributed in the inner and outer wall faces of the head of the RDE combustion chamber, and on the basis of the two-dimensional deflection, circumferential deflection is added on the fuel spraying holes.The structure has the advantages that non-linear circular seam configuration is adopted, pressure losses are reduced, and the outlet flow field is more stable. The upstream area of the transverse jetflow is decelerated, the sufficient fuel penetrating and mixing can be achieved, and the mixing efficiency is improved.

A crop harvesting machine with a cutter bar on a header frame has a height control system which uses depending sensor fingers arranged in contact with the ground so as to measure a height of the cutter bar above the ground. The sensor fingers are controllably retractable under actuation from an operator in the cab or automatically in response to prescribed conditions being met. The actuator used in retracting the sensor fingers can also be used to adjustably control ground pressure of the sensor fingers in the deployed position of the sensor fingers engaging the ground. The header height is adjusted using laterally spaced apart hydraulic linkages which can be operated at different elevations relative to one another responsive to different height signals relating height of opposing ends of the header frame relative to the ground to also control tilt of the header relative to the harvester frame.

The invention relates to seafloor mineral collection equipment which comprises an equipment main body, multiple adaptive seafloor mineral collectors and respective mineral conveying pipes, wherein the equipment main body is connected with the adaptive seafloor mineral collectors through the mineral conveying pipes, and the lengths, extending out of the equipment main body, of the mineral conveying pipes can be controlled to be regulated; the adaptive seafloor mineral collectors are provided with crawler walking mechanisms, and can be controlled to walk independently. According to the equipment, the seafloor topography and mineral distribution in the vicinity of an operation region are detected by virtue of an underwater detector, and the advancing path of the seafloor mineral collectors and a mineral storage vehicle is reasonably planned according to detected information; the multiple adaptive seafloor mineral collectors independently work at the same time, so that the mineral collectors are light and miniature, and damage of mineral collection operation to the ecological environment of the seafloor is reduced; by the equipment main body, a relatively flat seafloor path can be selected, and a rough path can be avoided; horizontal eddy flows are induced by the mineral collectors to facilitate enhancement of a mineral collection effect and improvement of suction force of unit energy consumption, so that a smaller number of water pumps with smaller sizes are required, the size of a mineral collection main unit is reduced, the energy consumption is further greatly reduced, and the equipment is more environment-friendly.