326results about How to "Reduce drag" patented technology

A guided aerial delivery device which can be used to safely and accurately deliver a payload and supplies from an aircraft in flight to a specific target location in a reduced time. The aerial delivery device uses an overloaded ram-air drogue parachute controlled by a guidance system to steer the payload towards the intended target. When a selected altitude is reached, a recovery parachute is activated and the payload descends the remaining distance under the recovery parachute.

A method and apparatus for reducing the drag of a motor vehicle includes a mechanism for diverting air attached to a front portion of the vehicle and a vacuum plate having openings therein for attachment to a back of the vehicle. Mechanisms for diverting air include a cover piece encasing a front portion of the vehicle, one or more separation panels attached to the front of the vehicle, and one or more tubular members attached to the front of the vehicle. Both the cover piece and vacuum plate are attached to the vehicle so that a space is maintained between the vehicle and the cover piece and vacuum plate, respectively.

A Zero Turn Radius vehicle is provided that utilizes a steering system including front steerable wheels that is synchronized with a drive system that has dual independent rear drive units to drive the rear wheels as well as steer the vehicle. The synchronization of the steering system with the drive system allows for true zero radius turning and reduced drag and wear on the vehicle especially the ground engaging wheels.

The present invention relates to an afterbody flow control system and more particularly to aircraft or missile flow control system for enhanced maneuverability and stabilization. The present invention further relates to a method of operating the flow control system.

In one embodiment, the present invention includes a missile or aircraft comprising an afterbody and a forebody; at least one activatable flow effector on the missile or aircraft afterbody; at least one sensor each having a signal, the at least one sensor being positioned to detect forces or flow conditions on the missile or aircraft afterbody; and a closed loop control system; wherein the closed loop control system is used for activating and deactivating the at least one activatable flow effector based on at least in part the signal of the at least one sensor.

A fluid dynamic section provides one or more fixed size escapelets through a foil body to reduce the induced and interference drag caused by trailing vortices and similar wake turbulence. The escapelets, which can be provided in both aerodynamic and hydrodynamic structures, such as wings, tail sections; rotary blades, guy wire frames, wing sails, and various underwater keels and wing keels. The escapelets transfer energy from an inlet located in the high-pressure surface of the foil or foil body to an outlet located in the lower-pressure surface, allowing energy that would normally form a vortex at the tip of the foil to be redirected and dissipated in a beneficial way. As a result, drag is reduced and fuel economy is increased, while at the same time increasing the authority of ailerons and similar flight control surfaces, allowing aircraft that were not previously spin recovery rated to become spin recoverable.

Methods and systems for modular fuel storage and transportation are provided. In an embodiment, a fuel storage system includes one or more fuel containers each supported by a fuel container support assembly. The fuel storage system may be mounted to a transportation device such as a vehicle or used in a stand-alone fashion. Each support assembly may include a plurality of detachable end support members such as end support members configured to support the end portions of the fuel container and side support members configured to support the body portion of the fuel container. Some of the end support members may include neck grooves such that when the end support members are coupled, the neck grooves form an enclosure around the neck portion of the fuel container. In an embodiment, the support assembly is configured to facilitate release of excess pressure in the fuel container.

The device has a coupling arm with head born elastically pref. via a stabilizer joint. The joint transmits traction and pressure forces into the bogie via an outer housing (10) and energy absorption systems (9,11). The systems are switched in series and are located in the housing. One and/or both systems have an irreversibly deformable deformation element (23), e.g. a mechanical shock absorption part. This is e.g. a tube, which is deformed by a nozzle (25) or a pressure ring (21), after a set pressure and/or traction load limit on shear ring (20) and/or pin has been exceeded. -

A diversion apparatus, adapted to be arranged at the tail end of a vehicle, includes a diversion assembly and a slide mechanism. The inside of the diversion assembly is hollow and formed an airflow channel. The slide mechanism is arranged fixedly at the tail end of the vehicle body and has slot tracks extended along the lengthwise direction of the tail end of the vehicle body. The diversion assembly arranged on the slot tracks can be activated and slipped thereon. Therefore, the diversion assembly can be slipped on the slot tracks and activated toward the front of the vehicle body to prevent the opening of the door leaf of the vehicle from being hindered by the diversion assembly.

Embodiments provide an aerodynamic fairing system that may comprise a base configured to mount to a vehicle, an arm coupled to the base at a proximate end and extending laterally, an a fairing mounted to the arm having an inboard and an outboard surface. The fairing outboard surface may provide an aerodynamic outer surface to direct flow to an angle to the rear. The arm may a fixed or adjustable length arm. The arm may provide a mounting area for a mud flap such that aerodynamic system may act as a mud flap hanger. Embodiments also provide an adjustable mud flap hanger.

An automatic tuning circuit for matching an antenna to a radio receiver. The automatic tuning circuit includes a tunable non-Foster circuit for coupling the receiver and the antenna; and sensing and feedback circuits for sensing the combined capacitance of the tunable non-Foster circuit and the antenna and for tuning the tunable non-Foster circuit to automatically minimize the combined capacitance of the tunable non-Foster circuit and the antenna.

The Shrouded Vertical Axis Dual-Turbine Generator is a system consisting of a superstructure in the shape of a symmetrical foil, with a vertical axis turbine set into the camber of each side. The leading edge of the superstructure increases the speed of the water or air current passing around the generator. The trailing edge creates a slip stream which reduces turbulence. Shutters on each side of the superstructure control the amount of current in contact with the turbines by sliding forward or rearward to increase or decrease flow to the turbines. The turbines are modular in design and can be customized into longer or shorter turbines, depending on application.

A drive traveling mechanism of a peristaltic pipeline robot mainly solves the problem that existing pipeline internal drive travelling mechanism are lower in driving force and hard to drive robots to run for long distance in pipelines. The drive traveling mechanism of the peristaltic pipeline robot is characterized in that the drive traveling mechanism consists of two crank-and-rocker mechanisms and a worm-and-gear mechanism which share a robot body as a framework, a connecting rod of one crank-and-rocker mechanism is of an elastic connecting rod structure, and the elastic connecting rod penetrates through a rocker which swings around the robot body to be further connected with a gear rotating around the robot body so as to form one crank-and-rocker mechanism. The two crank-and-rocker mechanisms identical in structure are respectively arranged from front to back. When a motor drives the worm to drive the gear to rotate, traveling legs connected to the two crank-and-rocker mechanisms arranged from front to back realize translational motion. The two crank-and-rocker mechanisms serving as components of the drive traveling mechanism are distributed along the radial direction of the worm by 120 degrees and are driven by the same worm. The drive traveling mechanism has the advantages that traveling legs can contact with walls of pipelines sufficiently to generate higher dragging force so that the robot can travel by a long distance in the pipelines.

The invention is an apparatus and method for reducing the drag that a vessel hull experiences when moving through the water by interposing air bubbles between the skin of the hull and the stream of water that the vessel is moving through. The invention delivers compressed air to the bottom of the vessel without the need for a high energy air compressor.

A catheter includes a catheter body with a compliant balloon secured at a distal end of the catheter body. The balloon includes a proximal end and a distal end. At least one infusion aperture is positioned directly adjacent the proximal end of the balloon.

The invention discloses a flexible circuit board, a flexible LED lamp bar and a manufacturing method of the flexible LED lamp bar. The flexible circuit board comprises a first insulation layer, a second insulation layer and a circuit layer. The first insulation layer and the second insulation layer are attached to the two sides of the circuit layer respectively. The first insulation layer and the second insulation layer are respectively provided with a folding portion in the length direction. The folding portion of the first insulation layer corresponds to the folding portion of the second insulation layer in position. The circuit layer comprises a set of power lines and at least one light source line. The light source lines and the power lines are arranged on the two sides of the folding portions in a separable mode. The width of the folded flexible circuit board is smaller, so that more occasions where the flexible circuit board with the smaller width is needed are met, and the power lines and the light source lines are not bent when the flexible circuit board is folded. Due to the existence of the folding portions, folding face layers of the power lines and folding face layers of the light source lines can be prevented from tilting up along the folding portions, the folding face layers of the power lines and the folding face layers of the light source lines are easily attached together, and the wrinkling phenomenon is reduced.

The present invention aims to provide a surface modification method for a rubber vulcanizate or a thermoplastic elastomer, which can impart excellent sliding properties and excellent durability against repeated sliding motion and can allow the surface to maintain the sealing properties, without using expensive self-lubricating plastics. The present invention relates to a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer as an object to be modified, the method including: step 1 of forming polymerization initiation points on the object to be modified; step 2 of radically polymerizing a monomer, starting from the polymerization initiation points, by irradiation with LED light at 300 nm to 400 nm to grow polymer chains on a surface of the object to be modified; and step 3 of esterifying, transesterifying or amidating side chains of the polymer chains.

The invention discloses a low-drag automobile disc floating brake, which comprises a mounting bracket, a floating caliper body, a piston rod, a guide pin, a first lining, a second lining, a first friction plate and a second friction plate, and the floating The caliper body is installed on the mounting bracket through the guide pin, the guide pin is covered with an elastic piece, the floating caliper body is provided with a piston cylinder, the first oil port and the second oil port, the piston rod is accommodated in the piston cylinder, and the piston rod includes a head The head of the piston rod divides the piston cylinder into a left chamber and a right chamber, one end of the piston rod tail is accommodated in the right chamber, and the other end of the piston rod tail is fixed with the first lining, the second The two linings are fixed on the floating caliper body, and the first lining and the second lining are respectively fixed with a first friction plate and a second friction plate. The low-drag automotive disc-type floating brake proposed by the invention solves the problem of drag caused by the two friction plates still in contact with the brake disc after the release of the traditional floating-caliper brake.

This hybrid drive device separates the lubricant supplied to a clutch and to an electric motor and improves lubrication and cooling of the clutch and electric motor. Lubricant from a clutch lubrication hole (143) and an electric motor lubrication hole (145) and consisting of shaft core lubrication is partitioned by a rotor support member (126). The lubricant which lubricates the clutch (6) and flows out is separated by the cover member (187) and does not flow into the coil end (24a) on one side. The electric motor lubricant is guided to the coil end (24b) on the other side, and, passing through an oil passage (186), is guided to the coil end (24a) on the first side.

A cable containing an optical fiber is used to transmit data between an underwater remotely operated vehicle (ROV) and a support vessel floating on the surface of the water. The ROV pulls the cable through the water and as the ROV dives away from the support vessel, the optical fiber is released from the support vessel. Excess tension in the cable can damage the optical fiber and the tension can be highest close to the ROV. To prevent potential damage to the optical fiber, the ROV can store a portion of the cable and release the cable if the detected tension approaches the maximum working load. When the tension drops to a lower safe level, the release mechanism can stop releasing the cable.

A tunable generator has a surface structure for contacting an exterior fluid flow relative to a base structure. The contacting surface structure also has an electrogenerative portion positioned relative to the contacting structure and the base structure. The electrogenerative portion is preferably a piezoelectric or electromagnetic structure, although other types of structures are known within the art. The contacting surface is mechanically coupled to portions of the base structure through one or more elastic elements. The various portions of the base structure can be positioned relative to other base structure portions to alter the elasticity of the system or the tensioning of the elastic elements. The field of flow exerts forces upon the contacting structure which causes movement in the contacting surface structure relative to the base structure through the electrogenerative portion.

The VTOL aircraft of the present invention has fixed-wings which can be monoplane, biplane or tri-plane and tiltable rotors on outriggers which extend from the fuselage and/or wings. The rotors on the outriggers can be driven by engines located in the fuselage or wings via a transmission system such as a shaft, pulley, or pressurized air using pumps. If rotors are driven by jets at the tips, fuel is fed through pipes inside of the outriggers. The rotors and engines can be located at the ends of the outriggers or the rotors may be separate from the engines and tilting only the rotors reduces structural requirements and weight of the aircraft. The rotors can be tilted over ninety degrees from the vertical position forwards and backwards, sideways if needed for lateral movement. The outriggers can be configured in various ways depending upon how many rotors are used and where the engines are located. Placing rotors on outriggers in the spaces least obstructed by the wings and fuselage reduces drag which increases efficiency and also offers a flexible platform for various hybrid designs.

The invention discloses an anti-spattering bow fin of a high-speed ship. The anti-spattering bow fin is arranged at the two sides above the water line of the bow of the high-speed ship; the longitudinal view of the anti-spattering bow fin is a streamline structure with closed wings; an inclined angle Alpha is formed by the closed wing closing the bow and the water line plane and the closed wing deviating the bow is parallel to the water line plane. The horizontal view of the anti-spattering bow fin is a streamline closed wing with a main wing bent downward into a side wing; the main wing closing the bow and the side wing form a water inlet; the horizontal width of the anti-spattering bow fin is reduced progressively from the bow to the direction of the stern; the tail end of the side wing is hooked internally to the ship side; and the main wing deviating the bow and the tail end of the side wing form a water spray outlet. The anti-spattering bow fin has low cost and convenient manufacture, can uplift the body of the high-speed ship when in sailing, improves the sailing posture of the ship, reduces soaking area of the ship body, and further reduces the total resistance of the ship body. The anti-spattering bow fin fully utilizes the energy of spattering flow, plays the role of assisting propulsion to the high-speed craft and achieves the purpose of saving energy of the high-speed craft.