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Topic: Aerofoil

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	Device for heating an aerofoil - Patent 6031214
		The device for heating an aerofoil as claimed in claim 1, wherein the hybrid fabric includes a portion where the density of rovings of longitudinal conducting fibers is a fraction of the density of rovings of longitudinal conducting fibers in other portions of the hybrid fabric.
		The shape of the aerofoils may be altered owing to the formation of ice resulting in the fact that during flight the aerofoil encounters droplets of super cooled water contained in the atmosphere.
		The aerofoil end 10 is provided with a heating device 16 having the form of composite heating mat which envelopes the region near the leading edge 12 and is itself covered with a sheath, not represented.
	www.freepatentsonline.com /6031214.html (2329 words)

	Turbomachine aerofoil and a method of production - Patent 5762731
		The curvatures of the convex surface and the concave surface are arranged to produce a thickness distribution of the aerofoil and a curvature of the concave surface which locates substantially all the surface irregularities in that region of the concave surface where in operation aerodynamic separation, a slow flow or a stagnant flow occurs.
		The thickness distribution of the aerofoil portion 38 depends upon the curvatures of the convex suction surface 46 and the concave pressure surface 44.
		The effects of this recess 41 is to cause any voidage, or porosity, in the region of the aerofoil portion 38 nearest the shroud portion 40 of the cast turbine blade 26 to move towards the recess 41 and to increase the size of the recess 41 during the hot isostatic pressing process.
	www.freepatentsonline.com /5762731.html (2541 words)

	EDM Spanwall
		The aerofoil section shall be manufactured with integral butt straps.
		The aerofoil shall be supported on 2mm galvanised adjustable brackets which can be truly aligned off the structural steelwork.
		The aerofoil shall be formed from mill finished aluminium and finished in a polyester powder paint to the selected RAL colour.
	www.edmspanwall.com /products/aerofoil_and_soffit_panels (365 words)

	Aerofoil Structure (Site not responding. Last check: )
		An aerofoil structure which is inflatable by ram air when in use, includes a flexible multicell air fillable envelope having a readily removable spar at its leading edge whose ends provide anchorages for a pair of operator control lines.
		3 the top surface of the aerofoil is relatively fat from a position to the rear of the leading edge whilst the bottom surface has a reflex region in the vicinity of the trailing edge.
		An aerofoil structure as claimed in claim 2, in which the material forming the lower surface member adjacent the opening is formed into a sleeve to receive and house the spar, the spar being readily withdrawable from the sleeve when the structure is not in use.
	www.kite.com /kite/flexipat/flexipat.htm (2644 words)

	AeroFoil, A 2-d Airfoil Design And Analysis Program
		AeroFoil is simply the best multi-point inverse airfoil design tool available, integrated with a full-featured analysis program that equals all the rest, and all at a very affordable price.
		AeroFoil uses the vortex panel method and integral boundary layer equations to calculate drag, lift, and airfoil pitching moment at different angles of attack.
		AeroFoil puts the inverse design process within reach of anyone with a general knowledge of how a wing works.
	aerofoilengineering.com (631 words)

	AeroFoil, A 2-d Airfoil Design And Analysis Program
		The unregistered demonstration copy will perform all of the calculations of AeroFoil but the printing and file saving features are disabled.
		A single user's license will be issued to AeroFoil in one of four catagories, with a cost ranging between $20 and $150.
		AeroFoil is currently in use at The University of Virginia in their undergraduate Aerospace Engineering program.
	aerofoilengineering.com /download.htm (602 words)

	Aerofoils and wings
		An aerofoil or airfoil or wing section or wing profile is an object, the shape of the cross section of the wing, with the function of producing a controllable net aerodynamic force by its motion through the atmosphere.
		Aerofoil thickness is the distance between upper and lower surfaces and the maximum thickness [the thickness ratio] of this aerofoil equates to 15% of the chord.
		On the left is the laboratory curve for an aerofoil, in the middle the curve for an high aspect ratio wing utilising the same aerofoil and the third curve is for a low aspect ratio version.
	www.auf.asn.au /groundschool/umodule4.html (11272 words)

	Aerofoil bodies (Site not responding. Last check: )
		Such strips may lie substantially in the plane of the mean chord of the aerofoil body, or may alternatively project from the trailing edge of the body at an angle, either upward or preferably downward, to that chord.
		The hand of the twist may be such that in proceeding from the root to the free end the inboard edge of the strip rises relative to the plane of the mean chord of the body.
		While the length and width dimensions may as will be described be related to other parameters of the aerofoil body in a manner so as to optimise the invention, the depth dimension 40 may tend to be dictated by strength considerations: typically, the depth dimension will be one-tenth of the width dimension or less.
	www.nmbest.biz /scitechcatalog/snubber_having_unitary_elastic_body/aerofoil_bodies.html (1773 words)

	U.S. Patent: 5762731 - Turbomachine aerofoil and a method of production - June 9, 1998
		The curvatures of the convex surface and the concave surface are arranged to produce a thickness distribution of the aerofoil and a curvature of the concave surface which locates substantially all the surface irregularities in that region of the concave surface where in operation aerodynamic separation, a slow flow or a stagnant flow occurs.
		The thickness distribution of the aerofoil portion 38 depends upon the curvatures of the convex suction surface 46 and the concave pressure surface 44.
		The effects of this recess 41 is to cause any voidage, or porosity, in the region of the aerofoil portion 38 nearest the shroud portion 40 of the cast turbine blade 26 to move towards the recess 41 and to increase the size of the recess 41 during the hot isostatic pressing process.
	www.everypatent.com /comp/pat5762731.html (2523 words)

	Aerofoil on model radio control model aircraft
		Aerofoils work using the principle of the Bernoulli effect, that a faster flowing fluid (air) exerts a lower pressure on its surroundings than a slower flowing fluid.
		Due to the shape of aerofoils the air that passes above the wing as well as taking a longer path, is accelerated backwards, this means that the air flowing over the top surface of the wing is moving over the aerofoil surface much faster than that flowing over the lower surface.
		The Four-Digit aerofoil geometry is defined by four numbers; the maximum camber of the chord, the location of the maximum camber in tenths of the chord and two numbers for the maximum thickness in percent of the chord.
	www.doddington-kent.org.uk /planecrazy/Aerofoil.htm (1522 words)

	Aerodynamics for Students
		The NACA 4 and 5 Digit aerofoils represent two families of aerofoil section that can be generated by the use of a set of simple polynomial equations.
		The aerofoils are created by summing a thickness distribution with a given mean line equation.
		These aerofoil sections are designed to produce laminar flow and low drag over a reasonable range of angles of attack.
	www.ae.su.oz.au /aero/naca45/naca45.html (633 words)

	Basic Principles Of The Aerofoil
		To design an aerofoil it is nessacary to have an understanding of the underlying principles which enable an aerofoil to work.
		The basic idea of an aerofoil is to create a pressure difference between the top and bottom edges, in effect a high pressure on one side and a lower pressure on the other.
		An aerofoil can be as simple as a flat plate inclined to the horizontal or as precisely designed as the laminar flow aerofoils of the present day.
	www.bath.ac.uk /~en3gjh/aerofoil/principles.htm (477 words)

	Energy Efficient Axial Flow FRP Fans (Site not responding. Last check: )
		Airfoil also spelled as aerofoil, is a shaped surface, such as an airplane wing, tail, or propeller blade that produces lift and drag when moved through the air.
		An aerofoil produces a lifting force that acts at right angles to the air stream and a dragging force that acts in the same direction as the air stream.
		If an aerofoil is to fulfill the desired function, it must experience a lift force, as well as a drag force when in motion.
	www.tifac.org.in /news/axfan.htm (4507 words)

	Circulation
		The basic experiment is to take an aerofoil (curved bit of cardboard) and move it across the surface of a container of liquid.
		The diagram shows that as the aerofoil is moved right to left the starting vortex is formed.
		When the aerofoil is removed a circulating pattern is left - this is opposite in direction to the starting vortex and should be larger but slower than the vortex (it should have the same momentum).
	www.geocities.com /yosemite/gorge/1192/circulation_.html (866 words)

	[No title]
		Tackle those fishing adventures combined with a comfortable stay in this log cabin equipped with propane fridge, stove, freezer, lights, barbeque, fish fryer, all cooking utensils, attractive wood burning stove, futon, and indoor washrooms with shower.
		Aerofoil, 50 air miles northwest of Sioux Lookout, is 6 miles long with an abundance of sand beaches, islands and access to two other small lakes.
		Boats with new cushioned swivel seats, motors and gas are all waiting for your arrival.
	www.northwoodoutposts.com /aerofoil.htm (138 words)

	aerofoil - OneLook Dictionary Search
		aerofoil : The American Heritage® Dictionary of the English Language [home, info]
		Phrases that include aerofoil: aerofoil surface, aerofoil vane fan
		Words similar to aerofoil: airfoil, surface, control surface, more...
	www.onelook.com /?lang=all&w=aerofoil (152 words)

	Levolux Aerofoil Fins: aluminium, fabricated, glass or timber to prevent heat gain - plus screening fins to screen ...
		Levolux Aerofoil Fins: aluminium, fabricated, glass or timber to prevent heat gain - plus screening fins to screen unsightly areas.
		Attached horizontally or vertically to the outside of a building, aluminium aerofoil fins combine extremely effective shading to prevent heat gain within the building whilst enhancing its architectural appearance.
		The fins can be fixed, motorised or fully automated.
	www.levolux.com /L_products/aerofoil_fins.htm (175 words)

	Low Speed Aerodynamics Research Group - Measurement and analysis of two-dimensional dynamic stall (Site not responding. Last check: )
		The dynamic stall facility allowed an aerofoil section to be subjected to a range of motion tapes over a wide range of frequencies whilst surface pressure data were recorded using a chordal array of transducers.
		The facility is still in operation and will be used in the near future for a new project to study the use of air vortex generators to control flow on a dynamically oscillating aerofoil.
		Oram, C.E. and Hales, R.L. 'Wind tunnel investigation of the unsteady aerodynamic response of a NACA 0015 aerofoil in pitching motions.', Univ. of Glasgow, Dept. of Aero.
	www.aero.gla.ac.uk /Research/LowSpeedAero/Old2dds.htm (1324 words)

	Glasgow Tower - Wikipedia, the free encyclopedia
		At 127 metres high, the tower is currently the tallest free-standing structure in Scotland, and the only building in the world which can turn 360 degrees from the ground up.
		It is shaped like an aerofoil (as if an aircraft wing had been set in the ground vertically), with computer-controlled motors to turn it into the wind in order to reduce wind resistance.
		The tower is the spiritual successor to the popular Clydesdale Bank tower which stood on approximately the same spot during the 1988 Glasgow Garden Festival.
	en.wikipedia.org /wiki/Glasgow_Tower (285 words)

	AERADE
		There the boundary is defined as corresponding to conditions on the upper surface of the aerofoil for which the shock strength and the adverse pressure gradient are sufficiently severe for the trailing-edge pressure coefficient, relative to its trend with increasing lift coefficient or Mach number in attached flow, to have decreased by 0.05.
		The design method is inverse, that is the VGK aerofoil method is used repeatedly in an iteration loop that includes an algorithm to adjust the aerofoil camber in the light of the target pressure distribution and the pressure distribution currently achieved.
		This permits the VGK aerofoil code to be run within a Windows interface that facilitates the construction of the relevant input files and provides graphical output of the aerofoil geometry, the computational grid and of all calculated flow parameters.
	aerade.cranfield.ac.uk /subject-listing/esdu/ES216.html (2021 words)

	Search
		Aerofoils of such behaviour are knows as cambered aerofoils i.e.
		An aerofoil is suspended in the test-bed section of a wind tunnel and is then subjected to a windflow.
		At 15 degrees of angle of attack, the bubble bursts and turbulent flow appears on the upper surface of the aerofoil.
	www.aircadets.org.hk /download/manual/pf.html (4339 words)

	IPSD 2003 -AEROFOIL ACTIVITY (Site not responding. Last check: )
		The force of the air will cause the aerofoil to travel up the fishing line.
		Make modifications to your aerofoil, leave a longer overlap, leave a shorter overlap.
		Attach a fuselage (body) to your aerofoil and turn it into a glider.
	www.smm.org /LT/ipsd2003/aerofoil.html (362 words)

	DEMONSTRATION CASE STUDY
		Aerofoil fans* are highly efficient compared to metallic fans because of the aerodynamic blade design.
		Depending upon the airflow required or the air power to be generated, options to increase or decrease the number of blades as well as the angels are available.
		The high efficiency aerofoil fan blade can be used as a replacement for cast aluminum blades of varying diameter and power consumption which are used in large numbers particularly in process, chemical and fertilizer industry.
	www.enginemates.com /casestudy1.htm (266 words)

	Aerofoils
		When aerofoils became the trend on top of Superstox, Cyril Ansell of A B C Racing, said "We'd better study up on these aerofoils son, to see if they really do any good." A friend at university put us in touch with Mike Gastor, a professor in aerodynamic engineering and the project was born.
		The aerofoil at that time was based on the NACA 63-418 profile with one trailing edge flap.
		Most of the work on any aerofoil is done about one quarter of the length of the wing back from the nose underneath and its the tiny bit of air about one quarter of an inch from the surface all over the wing which is most important, known as laminar flow.
	www.ybapublications.co.uk /shortcircuit/Features/sc_story_aerofoils.htm (1921 words)

	Flying Dutchman & Sailing Aerofoil (Site not responding. Last check: )
		Early testing of the WRT2 led to the abandonment of the concept prior to testing of the model with tail stabilizer attached.
		As can be seen the dihedral of the transverse aerofoil members would not be condusive to the induction of stable wing-in-ground-effect principles.
		As of today (2002), there are still no TRUE flying sailcraft "Sailing Aerofoils" in existence, however a number of design teams are coming tantalizingly close to such a concept.
	foxxaero.homestead.com /indtri_flydtch.html (1564 words)

	IHS ESDU 01033
		ESDU 01033 is the sixth in a sequence to accompany the VGK method for two-dimensional aerofoil sections.
		VGK is a CFD (computational fluid dynamics) method coded in Fortran for predicting the aerodynamic characteristics of a two-dimensional aerofoil in a subsonic freestream, including the effects of viscosity (boundary layers and wake) and shock waves.
		Procedures (and associated programs) for generating the surface coordinates of an aerofoil with deflected flaps are described, with deflection being represented either by rotation or by shearing.
	www.esdu.com /graphics/dataitem/01033.htm (394 words)

	[No title]
		From the graph it can be seen that before -6o the lift coefficient is negative this means that the aerofoil is generating no lift and would be useless in a practical situation.
		It can also be seen that after 14o the amount of lift being generated begins to decrease, this is known as the stall angle as the air flowing over the wing ceases to flow in a laminar way and begins to flow in a turbulent way, this causes the decrease in lift.
		The coefficient for profile drag is dependant on the type of flow over the aerofoil, as to weather it is laminar or turbulent.
	www.digitalbrain.com /knhmartinm98/web/FOILSIM.doc (1831 words)

	ANALYSIS OF LONGITUDINAL AND LATERAL BEHAVIOUR OF A CWR TRACK USING A COMPUTER SYSTEM LONGIN
		The results presented for each optimization method in Figures 1 to 3 will be (a) the geometry, with exaggerated vertical scale and the drag polars at (b) M = 0.73 and (c) M = 0.76.
		Dashed curves correspond to the initial configuration of the aerofoil and the solid curves correspond to the obtained configurations.
		Aerofoil optimization by GA: drag polars at M = 0.73.
	www.brad.ac.uk /staff/vtoropov/burgeon/b_BAe.htm (1667 words)

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