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Topic: Variable-geometry

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MSN Encarta - Search Results - variable-geometry Geometry may be thought of as the science of space. Plane Geometry, branch of elementary geometry dealing with the properties of flat surfaces and of planar figures, such as the triangle or the... Pythagorean Theorem, theorem in two-dimensional geometry that states that the square of the length of the longest side of a right triangle equals the... encarta.msn.com /variable-geometry.html

Patent 5437412: Variable geometry jet engine exhaust nozzle The variable cross-section nozzle of claim 20 wherein the control means connects the second main outer flap to the second main inner flap of one nozzle and the fourth main outer flap to the fourth main inner flap of the other nozzle. The variable cross-section nozzle of claim 19 wherein the control means operatively connects the first main outer flap to the first main inner flaps of both inner nozzles, and the third main outer flap to the third main inner flaps of both inner nozzles. The variable cross-section nozzle of claim 12 wherein the control means comprises a plurality of control cylinders and a plurality of connecting linkages, each linkage connecting a control cylinder to one main inner and one main outer flap. www.freepatentsonline.com /5437412.html

Swing-wing - Wikipedia, the free encyclopedia The limitation of the wide spacing, however, was that it reduced the benefits of variable geometry as much as it reduced their technical difficulties. A European consortium, meanwhile, adopted variable geometry for the Multi-Role Combat Aircraft (MRCA) project that emerged as the Panavia Tornado. While variable geometry provides many advantages, particularly in takeoff distance, load-carrying ability, and the fast, low-level penetration role, swing wings impose a considerable penalty in weight and complexity. en.wikipedia.org /wiki/Swing-wing

Project Sidewinder Holset Turbochargers Selected by BanksPower The variable geometry of the design should allow the Sidewinder Project Dakota to achieve the 210 MPH target speed and be driven to Bonneville towing a trailer with race parts and equipment. In simple terms, the variable geometry technology helps the turbocharger to maximize and totally control the boost pressure over the widest range of engine operating speed as possible. A modified HY55 variable geometry turbocharger (VGT) was used for maximum power during Bonneville speed record runs. www.bankspower.com /Banks_Sidewinder/turbochargers.cfm

Variable Geometry Truss Manipulator Arm The variable geometry truss manipulator arm is a truss structure that uses a VGT to provide joint rotations. This is accomplished by solving the inverse kinematics of the VGT which relate the lengths of the variable length battens to the relative orientation of the two end planes. The three variable length battens allow the orientation of one end plane with respect to the other end plane to be changed in a controlled manner. ranier.oact.hq.nasa.gov /telerobotics_page/Technologies/0523.html

198. : Vacuum forming of compound curved surfaces with a variable geometry mold. Rapid prot otyping of curved surfaces with a variable geometry vacuum forming mold is shown to be a feasible process, but with limitations of surface smoothness and achievable curvatures. Prototype parts of ABS and styrene thermoplastics were vacuum formed with the variable geometry mold. This initial study demonstrates a method for producing prototypes of compound curved surfaces with a variable configuration vacuum forming mold composed of a number of discrete pins and a rubber interpolation sheet. home.att.net /~edgrenda/p98/p98_198.htm

Patent 5146764: System and method for controlling a variable geometry diffuser to minimize noise The various temperature and pressure transducers are electrically connected to the microcomputer 22 in a conventional manner. periodically varying the diffuser width according to the sensed operational parameter to effect a diffuser width that results in the acceptable level of noise generation and performance at the sensed value of the operational parameter. The movable diffuser surface 56 is movable relative to the fixed diffuser surface 54 to alter the width of the diffuser 52. www.freepatentsonline.com /5146764.html

scriptie.htm Variable geometry as a normative concept of integration usually implies that not all the policies are to be chosen freely by the Member States, but that there is a basis of common policies supplemented by additional forms of cooperation. Variable geometry as well as à la carte integration on the other hand are compatible, as they have in common that all members participate in some specific areas. Variable geometry, as well as à la carte integration, are compatible as they have in common that all members set minimal common goals. www.xs4all.nl /~rwolff/scriptie.htm

RICKARD-AIR - VARIABLE GEOMETRY VAV SYSTEMS The static pressure in duct "B" is controlled at a constant level as the VARIABLE GEOMETRY control device varies the aperture of the terminal unit to modulate the air flow. The RICKARD range of VARIABLE GEOMETRY air diffusion equipment is so designed that room air movement remains essentially constant even at minimum terminal air volumes. During the cooling cycle each terminal unit, or group of terminal units, varies the volume of supply air at a constant temperature to the airconditioned space, in response to the output from a room or zone temperature controller. www.rickard-air.com /rick5.html

Re: corrado vr6 with schrick variable Geometry intake Re: corrado vr6 with schrick variable Geometry intake www.ecotekforum.com /_disc1/000007ac.htm

AMF to MAF conversion & Variable geometry to GNC AMF to MAF conversion and Variable geometry to GNC amf to maf conversion and conversion variable geometri to gnc elecauto power motronic www.elecauto.com /520.htm

Overview Variable geometry allows the pilot and/or fly by wire system to adapt the aircraft wing shape to the optimal settings dependant on its height, speed and load. Many of these countries started to look at variable geometry as a means of making an aircraft perform well throughout a wider flight envelope. There were initially two variants of the MRCA to be produced, these being the PA100 which was to be a single seater and the PA200 which was the two seat aircraft that eventually became the Tornado. www.tornado-data.com /History/overview.htm

Mikoyan MiG-23 Shoulder-wing variable-geometry configuration; sweep variable manually in flight or on ground to 16o, 45o or 72o (values given in manuals and on pilot's panel; true values 18o 40', 47o 40' and 74o 40' respectively); two hydraulic wing sweep motors driven separately by main and control booster systems. Various MiG-23 models were also built specifically for ground attack. Further improved MiG-23 attack variants were the MiG-23BK and MiG-23BM, both of which borrowed nay attack systems from the MiG-27. www.aeronautics.ru /archive/vvs/mig23-01.htm

Manpage of RHOLO This variable is used to associate portal geometry with one or more sections, as required for simplified geometry in some drivers (e.g., "ogl"). Upper case variables specified more than once will result in a warning message (unless the -w option is present), and the last value given will be the one used, unless it would conflict with something in an existing holodeck that cannot be changed, such as the section boundaries. If this variable is set to zero, no limit will be placed on memory use and the process will grow to accommodate all the beams that have been accessed. radsite.lbl.gov /radiance/man_html/rholo.1.html

A Concise Encyclopedia of the European Union --V-- The concept of variable geometry allows countries to opt out of unwanted policies rather than being obliged to choose between vetoing them or accepting a majority verdict. The opponents of variable geometry are similarly divided into two camps. Before that, however, the UK 's and Denmark 's opt-out s on EMU, the UK 's and Ireland 's exemptions from the Schengen Agreement and Denmark 's opt-out on anything to do with a common EU defence policy had already created de facto variable geometry. www.euro-know.org /dictionary/v.html

Project Sidewinder Banks Power: Turbocharger control electronics from Banks Power helps achieve maximum turbocharger power without turbo damage. The Banks® VGT controller automatically controls the variable geometry of the turbocharger for optimum boost pressure and turbo shaft speed according to varying input from the driver, engine and road conditions. The variable geometry technology of the Holset® Hy55 turbocharger now allows these parameters to be controlled. The variable ring nozzle in the Holset HY55 turbocharger must be carefully controlled to prevent unintentional overspeed operation of the turbo. www.bankssystems.com /sidewinder-turbochargercont.cfm

Variable Length Intake Manifold - Wikipedia, the free encyclopedia There are two main effects of variable intake geometry: Swirl - Variable geometry can create a beneficial air swirl pattern in the A variable intake can create two or more pressurized hot spots, increasing engine output. en.wikipedia.org /wiki/VLIM

Aerospace OEM Manufacturers The traditional way of manufacturing variable geometry parts was to transfer them from fixture to fixture picking up more information from the last machining operation as the part progressed along the line of tooling. Most of their components have variable geometry and are chiefly made by casting and forging. The simpler features such as the geometry of the root, are machined off on fixed jigs, cutting the airfoil as near as possible in the right place in relation to the mountings and seals. www.ttl-gas-turbine.com /adaptive_technology.htm

: Index Cone is a geometry primitive defined with a radius and a height. Cylinder is a geometry primitive defined with a radius and a height. Sets the geometry to be associated with the viewer's avatar. www.isi.edu /~amarshal/Java3DUtils/index-all.html

Micro VGTV The Micro VGTV or Variable Geometry Tracked Vehicle is a unique system for remote inspection or observation applications. When the geometry is varied to the point where the vehicle is in it's raised configuration, the tracks take the shape of a triangle.The MicroVGTV remains fully operational throughout these shape alterations and as a result, can continue to travel and manoeuvre while its configuration is being changed. As the name implies, the vehicle's shape can be altered during operation.The tracks, in their lowered configuration, take the shape of conventional crawler tracks. www.roboprobe.com /PRODUCTS/P03-MVGTV.HTML

Roundengine Variable geometry refers to the unique shapes in the engine design, notably the pistons and timing disc cutout that enables effective management of the compression and expansion strokes. VGT Technologies Inc. was established to develop and commercialize an exciting and truly revolutionary new engine concept called the Variable Geometry Toroidal (VGT) Engine or the RoundEngine. A “toroidal” engine is one in which the power pistons rotate in a perfectly circular chamber with the drive shaft at its geometric centre. www.roundengine.com

Audi World Site > Glossary > Variable_turbine_geometry_(VTG) Turbochargers with variable turbine geometry, change the output of the turbine as a function of engine load. In this way the optimum boost pressure can be maintained and optimum use can be made of the energy in the exhaust gas. www.audi.com /audi/com/en1/glossary/Variable_turbine_geometry__VTG_.html

Modeling of electrostatic microactuators The static response to a dc voltage is first determined to investigate the influence of varying the geometric parameters of the device on the range of travel and pull-in voltage. The dynamic response of the microbeam to a dc voltage is also determined for various distributions of the microbeam width and thickness and the gap size. An increase (decrease) in the gap size at the middle with respect to those at the endpoints results in an increase (decrease) in the pull-in voltage and an insignificant effect on the range of travel. stacks.iop.org /0960-1317/15/419

Atlas F1 Bulletin Board - OT : F4 Phantom air intakes Only, F15 air intakes had variable geometry, while it appears F4 ones were fixed. The variable wing was one of the major aviation engineering blunders of the 20th century. A3, if you would post a picture of a F4 C or D cockpit and draw numbered arrows to the flight instruments which are directly ahead of the pilots view, Ill explain how to develop a scan and control input for max energy management and maintenance. forums.atlasf1.com /showthread.php?s=&threadid=66072

The Hindu : Variable geometry turbochargers for diesel cars The maximum temperature of the exhaust of a diesel is about 800{+0} C, while the minimum temperature of the gasoline exhaust is about 950{+0} C. Also the wider operating speed range of the petrol car requires the variable geometry vanes to be incorporated in the compressor stage instead of the turbine stage. Amongst the various design refinements to realise these requirements, the primary feature adopted in diesel vehicles is the use of exhaust driven turbochargers giving forced induction of air, which permits an undersized engine to boost up the power to that of an equivalent naturally aspirated engine. The primary requirement for the choice of a diesel engine to a passenger car is the reduction of weight of the engine without affecting the performance in terms of torque, power and drivability with sufficient acceleration, not to speak of measures to realise quietness comparable to petrol driven cars. www.hindu.com /thehindu/seta/2003/06/12/stories/2003061200020200.htm

Consallen Drilling Rig: Detail of Swash-plate Oil Pump Variable geometry axial piston oil pump provides sensitive control of both rotation speed and also direction of the drill string, from full forward rotation to full reverse, for unscrewing drill tube joints, without gears or valves, passing through locked stand-still 'neutral' position. Such winches, when powered by hydraulic motor, will provide very sensitive infinitely variable speed control of hoist and pull-down from 'creep' to full in both directions, in addition to full free-fall operation for cable tool drilling. The faclities offered again, require no valves or controls other than the single pump lever, which gives variable oil flow in either direction, at the pressure demanded by the system at any moment. www.consallen.com /forager/Swashplate_pump.htm

G-Index The Geometry element is optional and if it is absent then the default geometry property of the feature type that is used in the containing FeatureStyleType is used. a boundingbox as child of a GM_Polygon isn't part of the iso19107 spec but it simplifies the geometry handling within jago this doesn't means for example that all geometries defines a valid boundary but is there asked for they should be able to answer (with null). deegree.sourceforge.net /deegree1.x.x_javadoc/index-files/index-7.html

Turbine The casing and blades may have variable geometry that allow efficient operation for a range of fluid flow conditions. Wind turbines use a foil to generate Lift (reaction) from the moving fluid and impart it to the rotor, they also gain some energy from the impulse of the wind. Gas, steam and water turbines usually have a casing around the blades that focuses and controls the fluid. www.sciencedaily.com /encyclopedia/turbine

Control system for a variable-geometry turbocharger - US Patent 6523345 A control system for a variable-geometry turbocharger connected to an internal combustion engine, whereby the geometry of the turbocharger is controlled alternatively according to a first operating mode, a second operating mode or a third operating mode; the system providing for switching from one operating mode to another fully automatically. 1) is primarily foreseen to limit the rotational speed of the variable geometry turbocharger exactly to the manufacturer allowance for safe durability, this in engine supply (firing) and retarding (engine braking) mode. Triggered by above said switching conditions, for any, operating condition of the engine the variable geometry 16 of turbocharger 4 will be commanded by the control mode which suits best to the actual situation. www.patentstorm.us /patents/6523345.html

KevLinDev - Geometry - Variable Width Stroke This last sample demonstrates the geometry that is being used to calculate the resulting variable stroke-width square. Each sample shows the variable width stroke being applied to a rectangle along with one of the supported SVG line joins (bevel, miter, and round). This is a demonstration of a possible extension to the variable stroke idea. www.kevlindev.com /geometry/2D/strokes

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