Showing papers on "Vertical plane published in 1999"

Convertible aircraft with tilting rotors

Abstract: The convertible aircraft with tilting rotors comprises two fixed wings with zero sweep on which an inter-connecting shaft is substantially rectilinear and parallel with the pivot axis but offset from this axis, substantially perpendicular to a longitudinal axis of symmetry of the aircraft, the center of gravity of which, in helicopter mode, is substantially in a vertical plane passing through the pivot axis and, in aeroplane mode, is substantially contained in or is in proximity to another vertical plane passing through the straight line of the aerodynamic centers of the wings.

Real time video rear and side viewing device for vehicles void of rear and quarter windows

Abstract: A real time video device for viewing the images at the rear and the sides of a vehicle. The real time video device includes a video camera movably mounted to the vehicle for capturing images of events occurring surrounding the vehicle and a video screen mounted within the vehicle and connected to display the images captured by the video camera. A device for moving the video camera along a horizontal plane to capture images along the horizontal plane and a device for moving the video camera along a vertical plane to capture images along the vertical plane are connected to the video camera. A manual control device is connected to the devices for moving the video camera along both the horizontal and vertical planes for capturing images along both the horizontal and vertical planes based upon desires of the driver for real time viewing by the driver of the vehicle on said video screen. An automatic control device is connected to the device for moving the video camera along the horizontal plane for capturing images along said horizontal plane based upon sensed conditions along the sides of the vehicle for display on said video screen to alert the driver to the sensed conditions thereby avoiding blind spots which inhibit the driver from driving safely.

Selected direction lighting device

Abstract: A lighting device is constructed with LED light sources and a power control to project light along a selected direction throughout an angular range of tilt of the lighting device about a vertical. The power control includes a tilt switch or tilt sensor which is responsive to the angular displacement of the lighting device about a vertical plane. A plurality of beams are arranged to project a plurality of oblique light beams. If during its deployment the lighting device is angularly displaced about the vertical, the power control means selectively energizes the beam which projects a light beam including the selected direction when the lighting device is angularly displaced. The divergence of the selected light beam from the selected direction when the light is vertical counterbalances the effect resulting from the angular displacement of the lighting device about the vertical permitting the light beam emerging from the lighting device to emerge directed along the selected direction throughout a range of angular tilt of the lighting device.

Numerical simulation of breaking and post-breaking wave deformation process around a submerged breakwater

Abstract: A numerical wave model for two-dimensional wave field in the vertical plane is proposed in this study. The model combines a VOF method with a non-reflective wave generator in addition to the open b...

A problem of a micropolar magnetohydrodynamic boundary- layer flow

Abstract: The matrix exponential method, which constitutes the basis of the state space approach of modern control theory, is applied to the nondimensional equations of unsteady boundary layer flow past an infinite plane surface with a pressure gradient. Laplace-transform techniques are used. The results obtained can be used to generate solutions in the Laplace- transform domain to a broad class of problems in magneto-hydrodynamic boundary layer flow. The technique is applied to the problem of an electrically conducting micropolar fluid flowing past a vertical plane surface in the presence of a transverse magnetic field and to the problem of flow between two parallel plates. A numerical method is employed for the inversion of the Laplace-transforms. Numerical results are given and illustrated graphically for both problems.

Two-Dimensional Analysis of Dam-Break Flow in Vertical Plane

Abstract: This work presents numerical computations for the analysis of Dam-Break Flow using two-dimensional flow equations in a vertical plane. The numerical model uses the general approach of the simplified marker and cell method combined with the volume of fluid approach for the surface tracking. The time evolution of flow depth at the dam site and the evolution of the pressure distribution are investigated for both wet and dry bed conditions. The effect of the initially nonhydrostatic state on the long term surface profile and wave velocity are studied. These long term effects are found to be marginal in the case of wet-bed conditions, but are significant in dry-bed conditions. The dry-bed tip velocity immediately after the dam break, computed numerically, compares well with analytical results published previously. The time taken to obtain a constant flow depth at the dam site increases with decreasing initial depth ratio. The numerical result for this time elapse for dry-bed conditions is close to the experime...

Modelling and H∞ control of a single-link flexible manipulator

Abstract: The aim of this study is to investigate motion in the horizontal and the vertical planes of a single-link flexible manipulator. The manipulator is modelled including gravity terms, and it is verified experimentally that the horizontal and the vertical motions are decoupled for a cylindrically symmetrical link and payload. The mathematical model is used to design a mixed-sensitivity H∞ contrlllerr. The sensitivity weighting function is used to obtain the required disturbance rejection properties, including zero sensitivity to a force disturbance in the steady state (i. e. integral action control). The control sensitivity weighting function is chosen to guarantee stability despite variation in the payload mass. The controller is compared experimentally with a proportional-plus-integral controller with velocity feedback and shown to give improved vibration control performance in the vertical plane.

A practical aspect of over-rooftop multiple-building forward diffraction from a low source

Abstract: A practical aspect of over-rooftop multiple-building forward diffraction from a low source is presented, including two formulations and an introduction of their application. In particular, the low-loss formulation for multiple diffraction exposes a factor that can account for strong over-rooftop radio propagation. Both low- and high-loss formulations take the advantages of the uniform geometrical theory of diffraction and physical optics (PO) and have the major advantage of significantly shortening the computing time over existing formulations. They behave well, particularly in and near the transition zone, and are written in explicit forms additionally for soft boundary that corresponds to vertical polarization transmission and reception in the horizontal plane. The application in the vertical plane for the total received signal strength prediction is introduced using the formulations for the hard boundary corresponding to vertical polarization transmission and reception.

Dual zone solar sensor

Abstract: The present invention relates to a dual zone solar sensor (10) incorporating a calibratable diffuser (50) overlying a vertically oriented circuit board (20) having at least one photodetector (21, 22) affixed to either side of the circuit board (20) in a vertical plane. Each detector (21, 22) preferably has a mutually exclusive hemispherical view. By mounting the photodetectors (21, 22) in the vertical plane, the dual zone solar sensor device (10) is capable of providing information about the intensity of a source of incident solar radiation and the relative position of that source of radiation. While the angular responses of the photodetectors (21, 22) in their vertical orientation are very close to those desired by skilled artisans for a dual zone sensor, the addition of a diffuser (50) that is slidable, and therefore calibratable, provides a method by which the angular response of each photodetector (21, 22) may be permanently calibrated to achieve a precise desired angular response. The present inventive combination of features eliminates the need for complex and bulky electronic signal processing circuitry and decreases the number of parts necessary to achieve functions previously achieved only by larger sensors having a far greater number of component parts.

Laser level assembly

Abstract: Disclosed is a laser surveying apparatus including a body, a platform pivotally supported by the body about a first axis, a drive pivotally supported by the platform about a second axis transverse to the first axis, a head rotatably supported by the drive to rotate about a third axis transverse to the second axis, and a semiconductor laser supported by the head to project laser radiation transverse the third axis. Electrical power to the laser is supplied via rotatable connections thereby allowing the weight of a power source to be omitted from the rotating head. Selective adjustments of the head allow the laser to rotate in a horizontal plane, a vertical plane or an inclined plane. Selective adjustment of the platform permits the laser to irradiate in a vertical plane at differing horizontal angles so facilitating marking out of buildings, fences etc. In one form the laser may be used as a plumb line and shine through the platform and body down upon a style thereby facilitating accurate location of the apparatus. The laser and drive in one form are remotely controlled to effect rotation, on/off of the laser, and dither action of the laser.

Method for controlling an aerospace system to put a payload into an orbit

Abstract: The invention relates to an aerospace system designed to put payloads into low and medium orbits. After taking off from an aerodrome, a plane comprising the launcher with the payload heads at cruising speed for the launching area, where it performs a dive; after reaching its maximum speed, the plane rotates. At the end of the rotation, the angle of attack is modified in order to obtain conditions close to zero gravity; the launcher is then released from the plane, in such a way that it lags behind the plane, is subsequently rotated at 10-30° with respect to the vertical plane, and the sustainer motors are turned on. The launcher is released when the parameters of the trajectory correspond to the initial conditions that allow the launcher to put into orbit a maximum payload. During the release of the launcher, the plane is stabilized in an inertial coordinate system.

Reclosable closure for cans

Abstract: A can closure, comprising a plate (2) capable of rotating on the horizontal plane and oscillating on the vertical plane around a pin (3) located on the upper wall (11) of a can (1) provided with a weakening opening area (12); it being provided that the plate comprises a pressure area (8) designed to force the weakening area (12) inside the can (1) and a closure area (5) with a lower raised shape (6) used to temporarily close the opening (12).

Support foot for machines to be mounted over conveyors or work stations, whose support arm makes contact with body of machine at its center of gravity

Abstract: The support (S) for a machine (M) consists of a vertical mount (V) with an adjustable slide (C) on top of which is fitted an angled arm (4). The end of the angled arm (6) is connected to the machine (M) at its center of gravity so that the machine can be tilted from a vertical plane to a horizontal plane by being rotated about two secant axes (APAs). The machine (M) can be blocked on the support (S) in these positions.

A device for picking up and transporting loads

Abstract: A device for picking up and transporting loads comprises a unit (3) that moves along two horizontal axes (X, Y) at right angles to each other and along a vertical axis (Z). The unit 3 consists of: a horizontal beam (4) that mounts means (5) for picking up and releasing the loads; means (6) for driving the beam (4) in a vertical plane that comprises the vertical axis (Z) and capable of raising and lowering the beam in a straight line or at an angle ( alpha ) that can be varied in both directions; a carriage (7) made up of a first, lower frame (8) that mounts the drive means (6) and that is rotatably connected to a second, upper, power-driven frame (9) that runs on a first pair of rails (10), the two frames (8, 9) being rotatably linked to each other by connecting means (11) equipped with a power-driven rack (20) for rotating the first frame (8) about the axis (Z); and a pantograph (13) for stabilizing the horizontal beam (4) in the vertical plane during up and down movements.

Lighting fixture with asymmetric distribution of light flux relative to optical axis

Abstract: FIELD: light signaling systems for traffic control and other similar purposes. SUBSTANCE: lighting fixture available in four design versions has matrix of light-emitting diodes functioning as light sources and two lens rasters. Lens raster first along optical beam travel has condenser lens sections and second one along optical beam travel functions as dissipater of light flux relative to optical axis required for traffic lights and similar lighting fixtures. Lighting fixture versions differ in design of external dissipater. Uneven distribution of light flux in horizontal and vertical planes is provided by means of two optical surfaces of lens sections of external dissipater with relatively perpendicular optical axes. External dissipaters of three last versions are designed to provide additional uneven light distribution in vertical plane and to direct at least main portion of light up or down of horizontal optical axis of lighting fixture which is necessary for traffic light operation because part of light is useless and does not reach observers when light flux is uniformly distributed in vertical plane. EFFECT: improved efficiency of lighting fixture due to optimal distribution of light flux. 15 cl, 16 dwg

Positioning device for vehicle

Abstract: PROBLEM TO BE SOLVED: To permit accurate positioning of a vehicle even with poor front visibility to improve workability and to prevent the damage of a wall and loads SOLUTION: An outer mast of a mast 7 of a fork lift truck is fitted with two laser pointers 11, 21 below and above The laser beam 12 of the first laser pointer 11 is irradiated horizontally forward so as to be parallel with the ground surface, and the laser beam 22 of the second laser pointer 21 is irradiated obliquely downward and forward The intersecting angle of both laser beams 12, 22 is to be 45 deg, and the vertical plane of an intersecting part of both laser beams 12, 22 serves a reference plane 15 Both laser beams 12, 22 are irradiated to a post 31, and the distance L between both irradiated laser beams 12, 22 corresponds to the distance between the reference plane 15 and the post 31

Direct fuel injection type spark ignition engine

Abstract: A direct fuel injection type spark ignition engine includes a piston which has at a top surface thereof a cavity including a nearly cylindrical bottom surface having such a cross section, which is formed by a vertical plane extending between an intake side and an exhaust side of the engine through the center axis of said piston, that approximates to a circular arc of a radius R having a center located on or adjacent the center axis of the piston, and a pair of side surfaces nearly parallel to the vertical plane. The cavity is nearly rectangular when observed in a plan view of the piston. When the piston is in a position assumed thereby when a fuel spray injected at an injection timing under a low speed engine operating condition reaches the bottom surface of the cavity, an inclination angle α , with respect to a horizontal plane, of a plane tangent to the bottom surface and contacting a striking point at which a lower peripheral end of the fuel spray strikes against the bottom surface, is set equal to or smaller than /2 where  is an inclination angle of a line defining a lower peripheral end of the fuel spray to a horizontal plane. By this, even when the injection timing is delayed, the fuel spray is deflected so that line f defining the lower peripheral end of the deflected fuel spray is necessarily directed toward a position higher than a horizontal plane, thus making it possible to collect the fuel spray adjacently around a spark plug even when gas movement is weak and therefore making it possible to attain stable stratified combustion.

Device for and a method of determining the angle of incidence of a received signal and a scanning sonar

Abstract: A transducer is constructed of a plurality of transducer elements which are arranged in multiple layers and columns forming as a whole a generally cylindrical shape A scanning sonar employing the transducer thus constructed can be switched between horizontal scan mode in which a vertically focused beam having a narrow horizontal beam angle (high horizontal directivity) is steered around the transducer using all the transducer elements and vertical scan mode in which a horizontally focused beam having a narrow vertical beam angle (high vertical directivity) is steered in a vertical plane directed in a specified scan azimuth to find out the angle of incidence of a received signal The horizontally focused beam is formed by using the transducer elements of specific columns centered on the specified scan azimuth A vertical scan signal obtained in the vertical scan mode is multiplied by a chirp signal A correlator provided in a succeeding stage converts the amount of Doppler shift into time data and determines the angle of incidence of the received signal

Semi-sumerisible propeller unit for vessel

Abstract: The propulsion unit consists of a shaft set at an angle to the lengthwise vertical plane of the craft, and a series of semi-submersible blades (1) mounted on the shaft. When the blades are immersed in the water, the pressure side is situated perpendicular to the craft's lengthwise vertical plane. The blades are mounted on the shaft so their position can be varied relative to the lengthwise vertical plane and/or main plane of the craft, e.g. by an angle of up to +/- 30 degrees. The propeller blade angle can be varied, for example, by a mechanism (9) connected to the propeller unit housing (6), which can turn about a pivot (8).

Ales shallow-water flow solver with non-hydrostatic pressure: wave applications

Abstract: A shallow-water flow solver with non-hydrostatic pressure in a coordinates has been developed to include effects due to the moving grid, referred to as the ALES approach. The formulation is outlined for 2D vertical plane problems and tested against experimental data for wave flows over plane beds, bars and trenches. Agreement with experiment is generally good and the importance of non-hydrostatic pressure and moving-grid terms is demonstrated.

Structural material for industrial vehicle and the industrial vehicle

Abstract: PROBLEM TO BE SOLVED: To weld a roof body to right and left structural materials easily and certainly, and prevent load applied to the roof body from an upper side from operating only on a welding part. SOLUTION: A left structural material 16 formed by forming a pipe material has a recessed part 22 formed of a vertical plane part 23 abutting against the end surface 20a of the left end part 20 of a roof body 19 and a supporting part 24 abutting against the lower surface of the end part 20 in the position apart from the vertical plane part 23. In the left structural material 16, an inner surface is formed of a first plane part 25 continuing from the supporting part 24 and extending approximately parallel to the vertical plane part 23, and a rear surface or a lower surface is formed of a second plane part 26 extending from the first plane part 25 approximately perpendicularly to the vertical plane part 23. An outer recessed part 27, which includes an outer vertical plane part 28 approximately parallel to the vertical plane part 23 and an outer horizontal plane part 29 approximately equivalent to the vertical plane part 23, is provided in the position substantially facing the recessed part 22.

Apparatus for charging a shaft furnace

Abstract: An apparatus for charging a shaft furnace, in which each of plane faces of a second segment of a guiding member of a unit for distributing a burden over a cross section of the furnace is formed so that its first line of intersection with a first vertical plane passing through its geometric center and tangentially to a circle lying in a horizontal plane and having the center on an axis of the furnace and the radius equal to the distance from the furnace axis to the geometric center, is inclined at angle "α" to the horizontal plane, the intersection lines of all plane faces forming a polygonal line, each subsequent length of the polygonal line, in a burden flow direction, making a greater angle of inclination with the horizontal plane than the preceding one, and a second line of intersection of each plane face with a second vertical plane passing through its geometric center and the furnace axis is inclined at angle "β" to the horizontal plane, with angle "β" increasing with the burden flow.

Slide punch moving device of press molding

Abstract: PROBLEM TO BE SOLVED: To make a smooth movement of a slide punch possible by mounting a slide cam, having an inclined slide plane and a subsequent vertical plane, at an above end of a position holding part which connects with a roller, to the upper die set and by installing an activating part and a stopper to the bottom die set. SOLUTION: When the upper die set 13 descends, the position holding part of the slide cam 14 descends. Resulting from this movement, the roller 8 rotates but the slide punch dose not move. When the upper die set 13 descends, a slide plane 16 engages with the roller 8, which slides its position towards the molding side while rotating by the inclination of the sliding plane 16. Thereby, the slide punch 1 moves forward and stops at a position where the vertical plane of the slide cam 14 engages with the roller 8. A coil spring 11 is compressed and obtains an enerdization force for getting back to its original position. When the upper die set 13 descends furthermore, the slide punch 1 keeps its forward position as is, and a holder presser 18 and a punch presser 19 press and fix a member on the upper faces of the holder 3 and the slide punch 1.

Suspension device for vehicular engine

Abstract: PROBLEM TO BE SOLVED: To set a position where an engine mount is installed, by keeping a balance of a vibration property at idle, driveability and the degree of freedom of design. SOLUTION: This device is designed so that the transverse engine 3 of a front-engine, front-drive vehicle is supported by an engine mount from the vehicle body. In this case, the engine mount supporting the static load of the engine 3 is placed between the part of a vertical plane which is closer to a drive shaft than the part of the vertical plane involving the roll-direction inertial main spindle 1 of the engine and the part of the vertical plane involving the center D of the drive shaft.

Bicycle light for illuminating rider

Abstract: A bicycle light that when mounted on the handlebars has a dual function of illuminating the body of the cyclist and also the road ahead. The first beam of light 7 may radiate from enclosure 4 to produce a sufficiently narrow beam of light as to shine only on the body of the cyclist. The same beam of light 7 may have its angle of illumination adjusted by means of moving enclosure 4 in a vertical plane on pivot point 5, in order to adjust the desired area of illumination. The second beam of light 8 may radiate from enclosure 1 in a direction to illuminate the road ahead.

Cylindrical beam former

Abstract: A transducer is constructed of a plurality of transducer elements which are arranged in multiple layers and columns forming as a whole a generally cylindrical shape. A scanning sonar employing the transducer thus constructed can be switched between horizontal scan mode in which a vertically focused beam having a narrow horizontal beam angle (high horizontal directivity) is steered around the transducer using all the transducer elements and vertical scan mode in which a horizontally focused beam having a narrow vertical beam angle (high vertical directivity) is steered in a vertical plane directed in a specified scan azimuth to find out the angle of incidence of a received signal. The horizontally focused beam is formed by using the transducer elements of specific columns centered on the specified scan azimuth. A vertical scan signal obtained in the vertical scan mode is multiplied by a chirp signal. A correlator provided in a succeeding stage converts the amount of Doppler shift into time data and determines the angle of incidence of the received signal.

Movable body driver for machine tool

Abstract: PROBLEM TO BE SOLVED: To simplify a supporting structure for a movable body and smoothly move the movable body. SOLUTION: A movable body 3 slidably supported by V-shaped tracks 9, 10 formed on a carrier 2 is provided and two sets of linear 19, 20 are provided between each of the movable body side faces 3a, 3b of the movable body 3 and each of the carrier side faces 2a, 2b of the carrier 2, parallelly opposed to each other in an almost vertical plane, so as to cancel attractive force with each other. Accordingly, the dimension of a guide plane 8 on the carrier 2 is easily managed by causing the movable body 3 in a simply placed condition to be supported by the carrier 2 and the movable body 3 is smoothly moved without giving load to the V-shaped tracks 9, 10.

Manufacture of crystalline thin film

Abstract: PROBLEM TO BE SOLVED: To freely control crystal structure and plane orientation of a growth surface without depending on the underlying material, by radiating coherent synchrotron radiation or the like from a plurality of directions to form a specified two-dimensional interference image on the surface of an amorphous substrate, and at the same time, radiating molecules or atoms which are to be a crystal material. SOLUTION: Synchrotron radiation introduced into a reaction chamber 4 through a filter 6 from a synchrotron radiation light source 5 is split into a plurality of directions, for example, four directions, using half mirrors 13, 14, and 15, and is then radiated onto a substrate 7 through mirrors 16, 17, 18, and 19, thereby forming a two-dimensional interference image on the substrate 7. By changing the inclination of the synchrotron radiation in the four directions in a vertical plane, the spacing of the synchrotron radiation from the four directions reflected on the substrate 7 changes. In accordance with this change, the lattice spacing of the two-dimensional interference image changes. Thus, the inclination of the synchrotron radiation in the four directions in the vertical plane is set an a predetermined value in conformity to a desired lattice spacing of the two-dimensional interference image.