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4971 results about "Rudder" patented technology
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A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other conveyance that moves through a fluid medium (generally air or water). On an aircraft the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull (watercraft) or fuselage, thus imparting a turning or yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or after end. Often rudders are shaped so as to minimize hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may be used to link rudders to steering wheels. In typical aircraft, the rudder is operated by pedals via mechanical linkages or hydraulics.
Quiet vertical takeoff and landing aircraft using ducted, magnetic induction air-impeller rotors
InactiveUS7032861B2Improve performanceImprove stabilityAircraft navigation controlUnmanned aerial vehiclesFlight control modesRudder
A hover aircraft employs an air impeller engine having an air channel duct and a rotor with outer ends of its blades fixed to an annular impeller disk that is driven by magnetic induction elements arrayed in the air channel duct. The air-impeller engine is arranged vertically in the aircraft frame to provide vertical thrust for vertical takeoff and landing. Preferably, the air-impeller engine employs dual, coaxial, contra-rotating rotors for increased thrust and gyroscopic stability. An air vane assembly directs a portion of the air thrust output at a desired angle to provide a horizontal thrust component for flight maneuvering or translation movement. The aircraft can employ a single engine in an annular fuselage, two engines on a longitudinal fuselage chassis, three engines in a triangular arrangement for forward flight stability, or other multiple engine arrangements in a symmetric, balanced configuration. Other flight control mechanisms may be employed, including side winglets, an overhead wing, and / or air rudders or flaps. An integrated flight control system can be used to operate the various flight control mechanisms. Electric power is supplied to the magnetic induction drives by high-capacity lightweight batteries or fuel cells. The hover aircraft is especially well suited for applications requiring VTOL deployment, hover operation for quiet surveillance, maneuvering in close air spaces, and long duration flights for continuous surveillance of ground targets and important facilities requiring constant monitoring.
Owner:SANDERS JR JOHN K +3
Enhanced flight control systems and methods for a jet powered tri-mode aircraft
ActiveUS6885917B2Easy to operateIncreases flight envelopeAircraft navigation controlDigital data processing detailsForward speedFixed wing
A method of stabilizing a jet-powered tri-mode aircraft as the aircraft travels in a helicopter mode, a compound mode, and a fixed-wing mode is disclosed. The method includes receiving a plurality of velocity vector component values and velocity vector commands derived from either (1) a number of pilot operated controllers or (2) a commanded array of waypoints, which are used for fully automated flights, and a rotor speed reference value, which is decreased with increasing forward speed to unload the rotor, thereby permitting conditions for stopping the rotor in flight. Stabilization of the commanded velocity vector is achieved in all modes of flight using blended combinations of rotor swashplate controls and aerodynamic controls such as elevons, canards, rudders, and a horizontal tail. Stabilization to the commanded velocity vector includes a plurality of control constraints applied to the pilot stick controllers that prevent penetration of envelope limits.
Owner:THE BOEING CO
Propelling and driving system for boats
A propelling and driving system for boats having an outboard rudder propeller. The system provides the boat with reliable and comparatively good maneuverability. The system comprises at least two rudder propellers, each having driving motors configured in the form of a permanent magnet-excited synchronous machine. The stator winding of each synchronous machine has three winding phases connected to a three-phase alternating current, which are connected to the supply system of the boat. A modular controlling and regulating device comprising standardized modules is provided for each of the rudder propellers.
Owner:SIEMENS AG
Method and system for semi-physical simulation test of visual unmanned aerial vehicle flight control
InactiveCN102789171AImprove Simulation EfficiencyReduce riskSimulator controlDynamic modelsUncrewed vehicle
The invention relates to a method and a system for a semi-physical simulation test of visual unmanned aerial vehicle flight control and belongs to the technical field of visual system simulation. The method includes building a dynamic model of an unmanned aerial vehicle system, initializing the dynamic model, enabling an unmanned aerial vehicle to fly along the track provided by the ground, feeding flight rudder quantity information to the dynamic model to be updated, driving a three-dimensional model of the unmanned aerial vehicle through the updated dynamic model to conduct simulation and outputting simulation image and data in real time. A system based on the method is further provided. The method and the system provide effective ways and development environment for design, experiments and verification of the flight control law, have the advantages of being simple, flexible, quick, vivid and real-time, improve simulation efficiency of a flight control system, reduce test risk and test cost of the unmanned aerial vehicle and shorten development period.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Method and apparatus for aerodynamic flow control using compact high-frequency fluidic actuator arrays
ActiveUS8382043B1Even air distributionAvoid separationBoundary layer controlsWingsJet engineEngineering
The present invention is directed to the manufacture of and the use of an aerodynamic flow control device having a compact array of a plurality of fluidic actuators in planar, curved, circular and annular configurations. The compact array of fluidic actuators of the invention may be designed to produce oscillating or pulsed jets at the exit ports with frequencies in the range of 1-22 kHz. They may be integrally manufactured along with the wing sections, flaps, tail and rudder of airplane, the inlet or exit geometries of a jet engine. When supplied with a source of fluid such as air, these arrays of actuators produce a set of fluid jets of random phase of high velocity and influence the main stream of air over the subject surface. The beneficial effects of modifying flow using the present invention include increased lift, reduced drag, improved performance and noise reduction in jet engines.
Owner:RAGHU SURYA
Wake control device for boat
A wake control device for a boat, including a mounting member pivotally securable to the boat aft for pivoting about a first axis substantially transverse to the boat aft, a rudder member secured to the mounting member for pivoting about a second axis substantially perpendicular to the first axis, a drive selectively controlling the pivotal position of the mounting member about the first axis, and a fin extending laterally relative to the rudder member. Such a wake control device, with or without pivoting about the second axis, may also be secured directly to an outboard drive as well. A control manually operable by a wake boarder while being towed remotely controls the pivotal position controlling drive.
Owner:MODINE MFG CO +1
Farm implement guidance method and apparatus
ActiveUS7054731B1Faster rateQuick launchAnalogue computers for trafficMechanical machines/dredgersSteering angleGps receiver
An apparatus and method using GPS for dynamically adjusting side-to-side positioning of a farm implement along a geographical path. The apparatus includes a global positioning system (GPS) antenna disposed on the farm implement, a GPS receiver coupled to the GPS antenna for determining a location of the GPS antenna, and a dual guidance computer for comparing the location to stored geographical coordinates of a desired path or providing a guide signal for offsetting the lateral position of an adjustable hitch or angling a wheel or ground rudder in a steerable implement for guiding the implement along the path; and a range extent signal for maintaining the offset of the hitch or steering angle of the implement within its dynamic range.
Owner:TRIMBLE NAVIGATION LTD
Surf wake system and method for a watercraft
A wake modifying system for modifying a wake produced by a watercraft traveling through water may include a rudder pivotally mounted to the watercraft for steering the watercraft, a fin pivotally mounted to the watercraft substantially along a centerline of the watercraft and forward the rudder, wherein the fin pivots about an upright axis to modify the wake produced by the watercraft traveling through the water, an actuator mounted within the watercraft and operably coupled to the fin for pivoting the fin relative to the centerline, and a controller mounted on the watercraft allowing an operator to control the actuator and selectively pivot the fin to a desired angle θd relative to the centerline.
Owner:MALIBU BOATS
Method and apparatus for steering a farm implement to a path
ActiveUS7383114B1Quick launchOversteering of the tractorAnalogue computers for trafficSoil-working equipmentsSteering angleGps receiver
An apparatus and method using GPS for dynamically adjusting side-to-side positioning of a farm implement along a geographical path. The apparatus includes a global positioning system (GPS) antenna disposed on the farm implement, a GPS receiver coupled to the GPS antenna for determining a location of the GPS antenna, and a dual guidance computer for comparing the location to stored geographical coordinates of a desired path for providing a guide signal for offsetting the lateral position of an adjustable hitch or angling a wheel or ground rudder in a steerable implement for guiding the implement along the path; and a range extent signal for maintaining the offset of the hitch or steering angle of the implement within its dynamic range.
Owner:TRIMBLE NAVIGATION LTD
Model ship based autonomous navigation control simulation system and method of under-actuated unmanned ship
InactiveCN105676871AReduce difficultyLow costPosition/course control in three dimensionsTracking modelPropeller
The invention provides a model ship based autonomous navigation control simulation system and method of an under-actuated unmanned ship. The whole system is arranged on a model ship, and the model ship is arranged in a simulated navigation channel; the system comprises an environment sensing sub system, a path programming sub system and a motion control sub system; the environment sensing sub system collects the navigation state of the model ship and simulates environment factor information; according to the navigation state of the model ship and the simulated environment factor information, the path programming sub system carries out navigation programming to obtain the tracking route, the set speed and the set course; and the motion control system combines a course tracking model, a path tracking model, the route deviation, the course deviation and the speed deviation to calculate the rudder angle and propeller rotating speed instruction needed in next navigation of the model ship and control a steering engine and a propeller. According to the invention, simulation experiments are carried out on the model ship, an instance is provided for operation and control experiments of large ships, important guarantee is provided for safe navigation of large ships in inland rivers, and the system reduces the difficult and cost of experiments of the large ships.
Owner:WUHAN UNIV OF TECH
Gimbal-mounted hydroelectric turbine
InactiveUS6956300B2Reduce environmental impactPositive net energyFluid couplingsWind energy with electric storageFluid intakeEngineering
A power plant extracts energy from a free flowing motive fluid by means of a turbine mounted on a gimbal. The shroud element of the fluid intake has external rudders, in conjunction with the gimbal mounting, enabling the enclosed turbine to instantaneously respond to changes in the direction of the free flowing motive fluid thus ensuring the face area of the intake is always physically orthogonal to the direction of the motive fluid streamlines. The shroud element may also be buoyant so as to optimally extract energy from an upper non-turbulent and higher velocity layer of the free flowing motive fluid. To function within an inherently unsteady source of energy, the preferred embodiment of the turbine is coupled to a DC generator which may further be coupled to a voltage and current regulating circuit which either charges a battery, performs electrolysis of water to produce hydrogen fuel, or is further coupled to a DC motor coupled to an AC generator. Alternatively an AC induction generator may be coupled to the turbine. Other mechanical, electrical, electronic, or electromechanical features may optionally be implemented to perform such tasks as adaptively locating the turbine in the maximum velocity flow, adapting internal vane and runner blade pitches for various flow rates and loads, keeping the intake free of obstructions, preventing loss of aquatic life, controlling and communicating the state of charge of the battery, or gauging and controlling the electrolysis process and communicating the fullness of the hydrogen gas output tanks.
Owner:INTEGRATED POWER TECH CORP
A composite rotating fixed-wing aircraft and its design method
InactiveCN101549754APrevent rolloverPrevent sideslipVehicle position/course/altitude controlGround installationsStarter generatorMotor drive
The composite rotating fixed-wing aircraft consists of the coaxial counter-paddle, reverse gear, engine output shaft, engine with a starter-generator, wings, tail blades, landing device, culvert, steering gear, fairing, fuselage, motor, motor drive shaft, wing control unit of small angle of attack, aileron rudder surface, and tailplane rudder surface. Co-axial counter-blade is located in the upper part of the aircraft, which connects with the engine output shaft; the reverse gear is installed between the co-axial counter-propellers; the motor connects with motor drive shaft powered by the starter-generator of the engine; the wings are located on both sides of aircraft and connect with the fuselage; the tail blades are located at the aircraft tail, which are installed behinde motor drive shaft; the landing device is located under the lower part of the fuselage and fixed with it; the culvert connects with the landing device; the fairing is installed in the culvert and connects with the steering gear; the wing control unit of small angle of attack is installed on the wing. The aircraft design method has six steps with strict scientific idea; this invention has a wide range of practical value and application prospect.
Owner:BEIHANG UNIV
Floating Apparatus for Deploying in Marine Current for Gaining Energy
ActiveUS20080050993A1Effective supportHigh suppression characteristicsArtificial islandsWaterborne vesselsHorizontal axisRudder
A floating, semi-submerged, tethered device that supports a horizontal axis turbine and power generation equipment for extracting kinetic energy from a tidal stream or ocean current. A submerged body (1) is supported by surface piercing struts (2) of small water plane area (FIG. 6). The device is tethered to the seabed by a spread of mooring lines (12) that are deployed both into and away from the direction of the tidal current. A horizontal axis turbine (4) harnesses energy from the water flow and drives a generator housed within the body. A horizontal strut hydrofoil (24) corrects the trim of the device when subject to varying loads from the mooring system and can also be used to dampen pitch motion. Rudder flaps in the struts (25) can be used to counteract roll motion. Power is exported from the device to the seabed by an umbilical (17). A thrusters (22) can be used to constrain the rotation of the device about its mooring system to prevent excessive twist building up between the mooring lines and the power export umbilical.
Owner:OCEAN FLOW ENERGY
Aircraft hardware-in-the-loop simulation device
InactiveCN101794523ANovel structureCompact assemblyCosmonautic condition simulationsSimulatorsLoop controlTest fixture
The invention relates to an aircraft hardware-in-the-loop simulation device, belonging to the technical field of simulation. The aircraft hardware-in-the-loop simulation device comprises a flight training device, a control surface control mechanism, a flight scene system, an atmospheric data testing device, a three-degree-of-freedom electric turntable and an inertial navigation system, which are all integrated as a whole through network; the flight training device is provided with a server, a central console, a sidebar and a display mechanism; the control surface control mechanism is provided with an aircraft physical mode, an aileron, a rudder, an elevating rudder and a rudder loop control system; the flight scene system displays flight attitude, data or trajectory; the atmospheric data testing device comprises a computer, a direct current power supply module, a power supply control module, an adaptor module and a signal conditioning box module; the three-degree-of-freedom electric turntable comprises an inner frame, a middle frame, an outer frame as well as a turntable pedestal and a control system thereof; and the inertial navigation system is provided with a sensor assembly mounted on the three-degree-of-freedom electric turntable and a computer. The aircraft hardware-in-the-loop simulation device has the advantages of novel structure, compact assembly, good dynamic performance, high simulation degree and being visual and convenient, etc.
Owner:CIVIL AVIATION UNIV OF CHINA
Tiltrotor controlled by double-propeller vertical duct
The invention provides a tiltrotor controlled by a double-propeller vertical duct. The tiltrotor, using the design of parallel twin-rotor and conventional aerodynamic configuration, consists of a fuselage, straight wings, rotors, a nacelle, an aileron, a vertical empennage, a rudder, an elevator, a horizontal empennage, a duct end cover, a vertical duct, an undercarriage, a power and decelerationsystem, a propeller power input shaft, a lower propeller, an upper propeller, louver-type slipstream sheets, a propeller gearing and collective-pitch controlling device, a propeller gear box supporting structure, a duct end cover driving device, a duct end cover motion slide rail and a slipstream sheet controlling device. Compared with the cyclic pitch control mode, the tiltrotor of the inventionsimplifies the operations during the vertical flight and the flight conversion and improves the reliability by using the structure of the double-propeller vertical duct to control the vertical flightand the conversion of the flight mode, and the tiltrotor has the advantages of long control force arm, high control efficiency and simple structure. Therefore, the tiltrotor constitutes a novel aircraft with significant development potential and promising future.
Owner:BEIHANG UNIV
Minisize rudders three-dimensional track emulation method under city environment
The present invention relates to a method of the 3D track simulation for a miniature aircraft under urban surroundings and belongs to the field of the 3D real-time route navigation technology for a miniature aircraft. The following modules are set in a computer: a map digitalized module, which digitalizes the 3D model of urban surroundings including threat points, buildings, the departure and target points of a miniature aircraft that is inputted by the graphical user interface (GUI), map parameters and the coordinate of a candidate navigation point composed of the 3D model of urban surroundings and the map parameters; a flight path programming module, which inputs the data from the map digitalized module, calculates the overall route index that takes the flight resource consumption rate and the survival rate into consideration, figures out the most feasible route using network optimizing algorithm under the condition of taking barriers into consideration, and then smooths the bevel at turnings and generates a realtime flight orbit; a data-collecting module, which collects the coordinate values of the aircraft positions and postures outputted by the flight path programming module and forms a posture coordinate value including orthogonal coordinate variables X, Y and Z, a pitch angle h, a yawing angle p and a roll angle r. The present invention saves flight resources and improves flights simultaneously.
Owner:TSINGHUA UNIV
Steer by wire helm
ActiveUS7137347B2Improve accuracyEasy to integrateSteering ruddersFloating buildingsEngineeringCommunication link
A helm apparatus for a marine craft or other vehicle having a steered member such as a rudder includes a mechanically rotatable steering device and a sensor which senses angular movement of the steering device when the craft is steered. A communication link to the rudder enables the helm to monitor the rudder position. A bi-directional stop mechanism is actuated when the helm determines that the rudder position is beyond starboard or port hard-over thresholds, indicating that the rudder has reached a limit of travel. The helm can cause the stop mechanism to fully engage the steering device to stop further rotation of the steering device in a first rotational direction, corresponding to rotational movement towards the limit of travel.
Owner:MARINE CANADA ACQUISITIONS INC
Floating apparatus for deploying in marine current for gaining energy
A floating, semi-submerged, tethered device that supports a horizontal axis turbine and power generation equipment for extracting kinetic energy from a tidal stream or ocean current. A submerged body (1) is supported by surface piercing struts (2) of small water plane area (FIG. 6). The device is tethered to the seabed by a spread of mooring lines (12) that are deployed both into and away from the direction of the tidal current. A horizontal axis turbine (4) harnesses energy from the water flow and drives a generator housed within the body. A horizontal strut hydrofoil (24) corrects the trim of the device when subject to varying loads from the mooring system and can also be used to dampen pitch motion. Rudder flaps in the struts (25) can be used to counteract roll motion. Power is exported from the device to the seabed by an umbilical (17). A thrusters (22) can be used to constrain the rotation of the device about its mooring system to prevent excessive twist building up between the mooring lines and the power export umbilical.
Owner:OCEAN FLOW ENERGY
Unmanned Aerial Vehicle
ActiveUS20150210388A1Reduce noiseReduce vibrationDigital data processing detailsElectrical testingJet aeroplaneLarge distance
An unmanned aerial vehicle adapted for hover and short / vertical take-off and landing (S / VTOL) is disclosed. The vehicle comprises: a body having an aspect-ratio less than two and having therein a payload volume, at least one propeller located forward of the body, at least one rudder. The body may have an inverse Zimmerman planform which provides lift as air flows across the body in horizontal flight / fixed wing mode, and further adapted such that during hover and / or short / vertical take-off and landing (S / VTOL) the vehicle operates as a rotorcraft with the body oriented with the at least one propeller substantially above the body. The vehicle is suited to a method of inspection, such as power line inspection where large distances can be analysed efficiently by flying in fixed wing mode, but by transitioning to hover mode allows detailed inspection of selected areas.
Owner:THE BOEING CO
Wave powered propulsion systems for submarines and quasi-dipped watercrafts
InactiveUS20040102107A1Minimal water resistanceZero wind loadPropulsion based emission reductionPropulsive elementsPropellerWatercraft
The wave powered (WP) propulsion systems developed in great amount for boats are not in use because of small effectiveness caused by rocking process reducing propellor stroke relatively water. Submarines and special quasi-dipped watercrafts deprived of this disadvantage. Their bodies keeps stable the propellors mounted on conning towers or special props owing to the body's great mass. This factor multiplies the WP propellor effectiveness meeting Navy and Merchant fleet requirements. The invention includes designs of: spare WP propulsion plant embedded into submarine diving rudders or folded into pockets of the submarine sail, quasi-dipped watercraft carrying multiple foil WP propulsion system, quasi-dipped tug towing submerged tank, self optimized foil propellor. Experiences with submarine models equipped by the WP propellers have shown excellent results. Expected velocities for submarine 4-7 knots, for the quasi-dipped watercraft 5-15 knots. The folded spare WP propulsion plant does not interrupt submarine functioning.
Owner:GORSHKOV VLADISLAV VASILYEVICH
Bending combined two-dimension time-varying load loading unit
InactiveCN101441477AImplement collaborative loadingReproduce the working stateAerodynamic testingHydrodynamic testingAerodynamic loadEngineering
The invention relates to the technical field of electro-mechanical servo control and implements a bending-torsion combination two-dimensional time-varying load loading device and relates to two-dimensional combination load applying device taking torque loading and bending moment loading as the core. The actuating mechanism of the bending-torsion combination two-dimensional time-varying load loading device mainly comprises: a to-be-loaded object module 01, a torque loading module 02, a bending moment loading module 03, a plane bearing module 04 and a variable bending moment loading point module 05. The device is used for applying time-varying load to a tested actuating mechanism physically in real time. The device is mainly used for aerospace rudder-face actuator aerodynamic load simulation, ship rudder-face and fin stabilizer actuator loading and vehicle motor and transmission load simulation. The most remarkable characteristic of the device is synchronous application of bending-torsion two-dimensional time-varying loads. The device can realize the prior time-varying torque loading and synchronously apply time-varying bending moment load to a shaft of an object to be loaded; and an action spot of the bending moment is variable in real time.
Owner:BEIHANG UNIV
Side plate rudder system
InactiveUS6415729B1Reduce speedSimple methodSteering ruddersPropulsive elementsRear quarterLeading edge
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Amphibious vehicle
An amphibious vehicle for traversing a body of water or solid terrain such as a layer of ice floating atop the body of water. The vehicle includes a floatable boat hull having an elongate aperture there-through, and a snowmobile for traveling over the solid terrain received in the opening and sealed to the hull in water impervious relation. The snowmobile includes an endless drive track for supporting the hull in spaced relation with solid terrain being traversed and for rearwardly propelling water in the body of water to forwardly propel the vehicle over solid terrain or through the water, and a pair of skis which support the front of the hull in spaced relation with the solid terrain being traversed and include upturned forward ends mounting upstanding rudders for steering the boat hull as the vehicle traverses a body of water. The hull includes upwardly extending, downwardly opening pockets for receiving the front upturned ends of the skis and stabilizing arms which are coupled between the frame and the skis. Upwardly inclined guides are provided on the underside of the hull for upwardly guiding the skis out of the water onto the ice floating on the water as the vehicle exits the water and moves onto the ice.
Owner:HANEY HARRY
Special-purpose unmanned helicopter obstacle-avoidance system for mountain-area electrical network routing inspection and work flow thereof
The invention discloses a special-purpose unmanned helicopter obstacle-avoidance system for mountain-area electrical network routing inspection and a work flow thereof. The special-purpose unmanned helicopter evadible system comprises an on-board signal acquisition module and an on-board obstacle-avoidance analysis module in a flight control system. The on-board signal acquisition module comprises a millimeter wave radar ranging sensor. The millimeter wave radar ranging sensor is connected to a signal pre-processing module and is used for transforming analog signals into digital signals, and transmitting the environmental information to the on-board obstacle-avoidance analysis module by a communication port. Corresponding instructions are transmitted to a control computer of the flight control system by the on-board obstacle-avoidance analysis module. Corresponding instructions are transmitted to an unmanned helicopter rudder control system by the control computer of the flight control system. The special-purpose unmanned helicopter obstacle-avoidance system avoids artificial intervention, ensures that the unmanned helicopter with the special-purpose unmanned helicopter obstacle-avoidance system can keep a safe distance to an electric power circuit at any time under complex mountain area terrain conditions, and prevents that the unmanned helicopter crashes the electric power circuit and other barriers because of sharp-edged gust disturbance or GPS errors.
Owner:STATE GRID FUJIAN ELECTRIC POWER CO LTD +3
Submersible video viewing system
InactiveUS6097424APrevent moisture transmissionFacilitate cable movementTelevision system detailsColor synchronisationCamera lensService personnel
A modular submersible video viewing system. The system includes a viewing monitor, multi-conductor cable and camera that store at a portable housing and deploy for underwater viewing. The camera can be submersed for stationary viewing, towed from a watercraft or manipulated with an operator pole. The camera can be secured with clips or bottom support plates in various orientations or be secured to a swivel coupler and steering guide and / or pole. A rudder, ballast weight (with or without a keel), lens' sunshield, lights and / or lenses and filters are optionally mountable to the camera. In one portable assembly, a cable spool mounts to a carry case that stores the system components. In another portable assembly, the viewing monitor, battery and attendant control circuitry are mounted in a monitor housing having an integral sunshield. A handle and a pair of cable wrap arms contain the cable. A recess at the monitor housing supports the camera. The housing can be supported on the floor or from a wall bracket to permit viewing through the sunshield. In another portable assembly, the sunshield can be detached from the housing.
Owner:NATURE VISION OPERATING INC
V/STOL biplane aircraft
InactiveUS6848649B2Reducing ducted fan outlet airflow velocityReduce loadAircraft navigation controlAircraft stabilisationHigh resistanceDrivetrain
The present invention is a 2 passenger aircraft capable of vertical and conventional takeoffs and landings, called a jyrodyne. The jyrodyne comprises a central fuselage with biplane-type wings arranged in a negative stagger arrangement, a horizontal ducted fan inlet shroud located at the center of gravity in the top biplane wing, a rotor mounted in the shroud, outrigger wing support landing gear, a forward mounted canard wing and passenger compartment, a multiple vane-type air deflector system for control and stability in VTOL mode, a separate tractor propulsion system for forward flight, and a full-span T-tail. Wingtip extensions on the two main wings extend aft to attach to the T-tail. The powerplants consist of two four cylinder two-stroke reciprocating internal combustion engines. Power from the engines is distributed between the ducted fan and tractor propeller through the use of a drivetrain incorporating two pneumatic clutches, controlled by an automotive style footpedal to the left of the rudder pedals. When depressed, power is transmitted to the ducted fan for vertical lift. When released, power is transmitted to the tractor propeller for forward flight. The aircraft can also takeoff and land in the conventional manner with a much larger payload, and is easily converted to amphibious usage. Landing gear is a bicycle arrangement with outriggers. The aircraft combines twin engines, heavy-duty landing gear, controlled-collapse crashworthy seats with a low stall speed and high resistance to stalls to eliminate any region of the flight regime where an engine or drivetrain failure could cause an uncontrollable crash.
Owner:CHURCHMAN CHARLES GILPIN
Underwater object detection and autonomous underwater vehicle (AUV) automatic collision prevention method and system based on mini sonar
InactiveCN102231082ARealize automatic collision avoidanceThe test effect is goodPosition/course control in two dimensionsAcoustic wave reradiationPropellerUnderwater object detection
The invention relates to an underwater object detection and autonomous underwater vehicle (AUV) automatic collision prevention system based on mini sonar. The system comprises mini sonar, a sonar computer and a master control computer, wherein the mini sonar communicates with the sonar computer through a serial port RS485; the sonar computer is connected with the master control computer through anetwork; the master control computer is connected with an optical fiber gyro, a Doppler velocimeter, a height gauge, a dip angle sensor and a magnetic compass through a serial port RS232 respectively; and the master control computer is connected with a propeller and a rudder fin through a digital / analog (DA) channel simultaneously. The invention also provides an underwater object detection and AUV automatic collision prevention method based on mini sonar. By the system and the method, an underwater object is detected through the mini sonar, a position of an obstacle is determined, and a collision prevention instruction is given; therefore, an accurate collision prevention decision is made by the AUV.
Owner:中国船舶重工集团公司第七〇二研究所
Tool and method for measuring deflection angle of airplane control surface
The invention discloses a tool and a method for measuring the deflection angle of an airplane control surface. The measuring tool comprises a control surface clip (1), a stabilizer clip (6), a brace rod (5), a regulating arm (4), a sensor support (3), an angular displacement sensor (7) and a forked rocker arm (2). The measuring process comprises the following steps: clamping the stabilizer clip (6) of the measuring tool to a force-bearing position of a vertical tail stabilizer (45), sequentially mounting the brace rod (5), the regulating arm (4), the sensor support (3), the angular displacement sensor (7) and the forked rocker arm (2) in place, clamping the control surface clip (1) to a force-bearing position of an upper rudder (46), and moving the angular displacement sensor (7) to a rotary shaft of the upper rudder (46) so as to measure the deflection angle of the control surface. The invention can be simultaneously used for measuring the deflection angle of the rudder or the elevator in the bench test or the ground built-in test of an airplane, can be directly used for measuring the deflection angle of the control surface without disassembling structural parts of the airframe, and is especially suitable for the condition that the deflection amount can not be educed for measurement by means of a link mechanism in case that the rotary shaft is arranged inside the envelope of the control surface.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Hybrid driven under-water self-navigation device
InactiveCN101070092AAdd depthImprove gliding efficiencyPropulsion power plantsPropulsive elementsControl systemAttitude control
The invention discloses a self aircraft under water driven by the mixed power. It includes the main body, the fixed vane, the vertical tail vane, the horizontally fixed bow rudder and a canula screw thruster. In the dome, it is installed with the flotage driving out bladder, the flotage driving pressure capsule with the flotage driving system, the guise adjusting pressure capsule with the pitching adjusting system and the navigation system, the electric source and controlling system pressure capsule which are all connected with out water directly. By using the triangle vane, it is proper to improve the gliding effect when gliding; by using the horizontal bow rudder and the vertical tail rudder, the guise and the track can be controlled in the AUV mode to help the guise control in the gliding mode, the pitching guise adjusting system can reach the guise control in gliding mode. So it can monitor and detect the big field water for long time.
Owner:TIANJIN UNIV
Aircraft control method
InactiveUS6931247B2Low production costLess-expensive to produceAll-wing aircraftSolar panel attachmentsFlapping wingGround station
Owner:AEROVIRONMENT INC
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