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Topic: Flame holder

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	Heating unit with a high emissivity, porous ceramic flame holder - Patent 5470222 (Site not responding. Last check: 2007-10-25)
		The ceramic particles in the flame holder absorb the heat of combustion and radiate it in the infrared region.
		The flame holder was 36 cm long and had an inside diameter of 12.5 mm (0.49 inch), a wall thickness of 3.9 mm (0.16 inch), an average pore size of 30.mu.m, and a porosity of 46%.
		The flame holder was a closed-ended tube 39 cm long and had an inside diameter of 12.7 mm, a wall thickness of 2.3 mm (0.09 inches), an average pore size of 45.mu.m, and a porosity between 40% and 50%.
	www.freepatentsonline.com /5470222.html (3878 words)

	Flame holder - Wikipedia, the free encyclopedia
		A flame holder is a component of a jet engine designed to help maintain continual combustion.
		The design of the flame holder is an issue of balance between a stable eddy and drag.
		Even more effective, however, is the V-gutter flame holder, which is shaped like a V with the point in the direction facing the flow of air.
	en.wikipedia.org /wiki/Flame_holder (179 words)

	Flame holder devices for combustion chambers of turbojet engine afterburner tubes - Patent 4259839 (Site not responding. Last check: 2007-10-25)
		Flame holder device according to one of claim 1 or 11, characterized in that a space is provided between the adjacent end of each arm and said flank of the ring.
		Flame holder device according to claim 3, characterized in that the width of the space is between 0.5 mm and 4 mm.
		Flame holder device according to claim 1, characterized in that the section of each arm is such that the dihedron defined by the flanks becomes greater toward the ring.
	www.freepatentsonline.com /4259839.html (2672 words)

	Flame holder (Site not responding. Last check: 2007-10-25)
		A flame holder is a component of a jet engine designed tohelp keep continual combustion going.
		Much more effective is the H-gutter flame holder, which is shaped like a letter H with a curve facing and opposing theflow of air.
		Even more effective, however, is the V-gutter flame holder, which is shaped like a V with the point in the directionfacing the flow of air.
	www.therfcc.org /flame-holder-126766.html (168 words)

	Primitive Turbine Engine
		The flame holder tube is smaller in diameter, 1.25in, than the outlet from the compressor, 1.5in.
		The hole pattern in flame holder may not be producing enough turbulence to adequately mix the propane and air.
		The flame seems to be burning well up the flame tube, and not extending past the end of the tube.
	mdavis19.tripod.com /turbine/primitive.html (6157 words)

	[No title]
		Flame spreads to the open end, causing a pressure rise in the duct.
		The duct is partially blocked by transverse baffles in order to simulate the obstructions by solid objects which, by causing recirculations in their wakes, accelerate flames in confined spaces.
		The predictions based on the 4-fluid model were in at least as good agreement as those of the other codes; but there were uncertainties about the experimental conditions, as well as about the model constants.
	www.cham.co.uk /phoenics/d_polis/d_lecs/mfm/mfm5.htm (647 words)

	Vision Engineer - How Ramjets Work (Site not responding. Last check: 2007-10-25)
		A typical ramjet consists on an inlet, a combustor, a flame holder, and an outlet nozzle.
		This is ignited using a flame holder that localises the combustion process.
		The combustion of fuel causes rapid expansion of the gases leaving the flame holder.
	www.visionengineer.com /aero/ramjets.shtml (288 words)

	Tri-Mode ARLA
		The rule of thumb on can-type flame holders is to have enough holes so that the sum of their cross sectional areas is at least 50% more than the cross sectional area of the combustion chamber.
		The purpose of the flame holder is to provide an environment where the fuel/air mixture will burn without blowing out.
		Designing a low-drag, efficient flame holder is somewhat of an art but it can usually be done on a bench with a simple air source.
	www.alt-accel.com /arla/rj-basic.htm (1918 words)

	Curran, Donald C. (1953-01-01) An experimental study of the stability of laminar flame. ...
		Of particular significance is the question of whether or not a flame may take on a turbulent structure in the absence of upstream turbulence.
		Therefore explorations concerning the conditions under which a laminar flame might become unstable were undertaken by burning premixed propane and air using a spherical flame holder.
		The resulting conical flame had annular waves develop in the flame front a short distance downstream from the flame holder.
	etd.caltech.edu /etd/available/etd-04222003-101645 (311 words)

	Gas-Turbine Jet Engine: Flame Tube
		The flame tube is designed to mix a small percentage of the air that enters the combustion chamber with the fuel and control the burning process so that the flame never actually touches the walls of the chamber or extends into the turbine area.
		This piece of pipe forms the start of the flame tube and has four holes drilled in it to allow some air to directly reach the injection point so as to aid ignition.
		The pipe from the compressor enters the combustion chamber at a tangent such that it is forced to swirl clockwise (viewed from the exhaust end).
	www.aardvark.co.nz /pjet/turbine2.htm (587 words)

	[No title]
		The ring at the bottom of the flame holder is a mounting ring made for test purposes.
		Moving the fuel line around in the flame had a noticable effect when the fuel was gasoline but none with the mineral spirits.
		Based on the observed flame I chose not to try the copper or brass even though these would have been lighter and had better heat transfer characteristics.
	home.earthlink.net /~altaccel/trimode/am-ram/tr-2.htm (1269 words)

	Structure of Methane Lean Premixed Flame behind Flame Holder (Site not responding. Last check: 2007-10-25)
		Lean premixed flame is expected to be a low pollution combustion configuration but it is prone to combustion instability.
		Direct numerical simulation of a methane lean premixed flame around a flame holder is being conducted to understand the flame stabilization mechanism and extinction/re-ignition phenomena.
		Figure 1 presents the heat release layers behind the flame holder and the temperature distributions in cutting planes.
	www.nal.go.jp /aet/cfd/0cfd-f02.html (98 words)

	Foster, James Roger (1956-01-01) Effects of combustion chamber blockage on bluff body flame stabilization. ...
		The necessity for stabilizing a flame in a high speed flow of combustible gas has led to extensive studies of the mechanism of flame stabilization by bluff bodies.
		In the present investigation the geometry of the flame in the stabilization region is examined by means of photographic and probing techniques.
		The observed square root dependence of the characteristic wake length, and hence of the blowoff velocity is shown to be directly caused by blockage effects.
	etd.caltech.edu /etd/available/etd-03222004-164002 (197 words)

	[No title]
		The devices or holder shall be constructed to prevent the spilling of liquid fuel or wax at the rate of more than one-fourth teaspoon per minute when the device or holder is not in an upright position.
		The trees shall be properly treated with a flame retardant approved by the State Fire Marshal or the tree shall be removed immediately.
		Candles or open flame of any type shall not be used on or near the tree within a distance equal to the height of the tree.
	www.iub.edu /~riskmgmt/openflam.htm (1167 words)

	Flame Holder (Site not responding. Last check: 2007-10-25)
		Re-equip the Torch and use the flame to light it, now continue East...
		The description of the key reads that the holder will "wander for eternity" and it is correct...
		and CEO of Carrol Boyes Functional Art explains her choice: âThe flame is one...
	www.wikiverse.org /flame-holder (303 words)

	Kyle Design Flame Badge ID Holder
		Unique, retractable flame ID badge holders with silver or gold designs in 8 cool reel colors (top left).
		The bulldog clip is also attached to the plastic holder in one spot that allows it to pivot.
		It can be clipped to fabric anywhere and at any angle, but the clip is a little large to fit over the split ring of a lanyard, forcing it to hang forward slightly.
	kyledesign.zoovy.com /product/BH130FLAME (219 words)

	Fire Simulation (Site not responding. Last check: 2007-10-25)
		The view is end on showing the flame stretch and tilt due to the mild crosswind.
		The fire attaches itself to the side of a flat object and follows the object as it moves through the flame.
		The geometry of the trench is two dimensional yet the fire behavior is three dimensional because of 3-D fluid instabilities.
	www.itsc.com /movfire.htm (313 words)

	V. Hammer-In - December 2002 Archive
		Steve A. the orifice holder I used in the sidearm is a 1/8" schedule 80 pipe nipple that I drilled and tapped for the 1/4-28 (fine) threads that the Hobart and Miller mig tips have.
		The step slows it down to the point where the gas speed is slower than the flame speed (rate of ignition), so that it keeps the flame in the flare rather than burning beyond the flare where it becomes diffuse and somewhat mixed with atmospheric air which might get a more oxidising flame.
		The flame holder is a disturbance in the flow that affects velocity.
	www.anvilfire.com /FAQs/archives/v122002.htm (16639 words)

	[No title]
		This graphic shows the general layout of the flame holder including the dimensions.
		Fuel was introduced into the flame holder without pressure or spray.
		There was no attempt to move the fuel line completely outside the flame so conclusions about the effects of preheating on mineral spirits could not be substantiated.
	www.alt-accel.com /arla/am-ram/tr-2.htm (1269 words)

	NACA UK Mirror report description page (Site not responding. Last check: 2007-10-25)
		Effects of fuel distribution and number and arrangement of stages on performance and operational characteristics of several fuel-cooled flame holders are presented and discussed.
		Operation with a three-stage flame holder having the large stage upstream was the most efficient.
		Combustion efficiency was slightly increased at high altitudes by injecting fuel upstream of the flame holder.
	naca.central.cranfield.ac.uk /report.php?NID=4265 (118 words)

	US PATENT CLASS 431-- Class Notes
		The recitation that a fuel is handled or that the invention comprises a burner does not bar classification in Class 137 where no particulars of a flame holding element nor significant relationship of a flame holder and fuel handler based upon the combustibility of the fuel fed to the flame holder is involved.
		It is noted that for Class 236 an igniter, flame sensor or pilot burner is a part of the control structure rather than of the controlled temperature modifying burner.
		The spread of flame from a combustion area into a feed passage of a burner head.
	www.patentec.com /data/class/defs/431/0.html (1251 words)

	Home made jet engine
		The final finish was made today, and a control board was made to all the instruments, we also modify the flame holder by reversing it (it contain only holes in the half of the length) and we run a test only on the combuster, but it did not work, so back to the future.!
		The problem is that the flame holder must have a 90 deg angle at the end for connecting to the turbo, and that make it a bit tricky to manufacture.
		The flame tube is shortened 7 cm to aloud air to surrounding the hollow endcone for cooling, there is no connection through the top plate more.
	www.pulse-jets.com /jetengine/jete.htm (2644 words)

	Holder flame links US (Site not responding. Last check: 2007-10-25)
		Holder flame links US Holder flame links US or references to holder...
		To obtain information on holder links, simply click on the 'Buy' buttons to confirm latest prices, delivery and availability direct from the supplier.
		Holder flame links US or references to the subject of holder...
	flameus.hmk4.net /flame/holder.html (151 words)

	burner.html
		This mongo burner is shown with a long barrel and flame holder.
		The parts are, left to right: jet assembly, air intake (red), barrel (blue) and flame holder (fl).
		This is a test burn of the burner with a 3/4" barrel and a flame holder.
	www.hal-pc.org /~lwhill/burner.html (689 words)

	Tri-Mode ARLA
		With the addition of fuel and an ignition source a flame is started which recirculates throughout the can via the four vortices, thereby maintaining the flame.
		The already heated fuel droplets are further heated by the hot flame holder and vapor/droplets are scattered into the airstream of the main combustion chamber.
		Additional flame holding is accomplished behind the hemispherical flame holder.
	www.alt-accel.com /arla/news7.htm (1305 words)

	Flame Holder Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-25)
		Looking For flame holder - Find flame holder and more at Lycos Search.
		Find flame holder - Your relevant result is a click away!
		Look for flame holder - Find flame holder at one of the best sites the Internet has to offer!
	www.folkartmuseum.com /encyclopedia/Flame_holder (324 words)

	Guru page : April 1 - 8, 2003
		Flame holders: wow, we were a whole 26 seconds apart with our posts.
		While I agree that a flame holder will not make a bad burner good, every industrial burner I've used has had a flame holder in the design.
		When the refractory transition is the flame holder, making it a consistent shape is a good thing.
	www.anvilfire.com /FAQs/archives/g042003a.htm (13933 words)

	Tri-Mode, ARLA, Bomarc Comparison (Site not responding. Last check: 2007-10-25)
		The combustion chamber on the Bomarc included the fuel injector, flame holder, and igniter.
		The flame holder is a gutter-type with both radial and axial gutters to ensure efficient combustion.
		The CIM10-B used a can-type flame holder because it was better able to maintain the flame at the higher (Mach 2.8 vs 2.5) flight speed.
	home.earthlink.net /~altaccel/trimode/rj-bomar.htm (560 words)

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