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	Pulse jet engine -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-20)
		A pulse jet engine is a very simple form of (additional info and facts about internal combustion engine) internal combustion engine wherein the combustion occurs in pulses and the propulsive effort is a reaction to the rearward flow of hot gasses.
		A pulse jet comprises an inlet arrangement, a one-way air inlet (Control consisting of a mechanical device for controlling the flow of a fluid) valve, a combustion chamber, and an (acoustically) (additional info and facts about resonant) resonant exhaust tube (tailpipe) with integral (additional info and facts about propelling nozzle) propelling nozzle.
		Pulse jets are mainly used today in (additional info and facts about model airplane) model airplanes, though some experimenters continue to work on improved designs, including (additional info and facts about pulse detonation engine) pulse detonation engines.
	www.absoluteastronomy.com /encyclopedia/p/pu/pulse_jet_engine.htm (960 words)

	ipedia.com: Pulse jet engine Article (Site not responding. Last check: 2007-10-20)
		A pulse jet is comprised of a one-way air inlet valve, a combustion chamber, and an (acoustically) resonant exhaust tube (tailpipe).
		Pulse jet engines are characterized by extreme simplicity and low cost of construction, high reliablity, poor fuel economy, and a very high noise level.
		Pulse jets have a very high thrust-to-weight ratio and need very few moving parts, so they are cheap and easy to manufacture.
	www.ipedia.com /pulse_jet_engine.html (1166 words)

	Pulse jet engine - Wikipedia, the free encyclopedia
		A pulsejet engine is a very simple form of internal combustion engine wherein the combustion occurs in pulses and the propulsive effort is a reaction to the rearward flow of hot gasses.
		A pulsejet comprises an inlet arrangement, a one-way air inlet valve, a combustion chamber, and an (acoustically) resonant exhaust tube (tailpipe) with integral propelling nozzle.
		Like most jet engines, the pulsejet engine is very simple in design - consisting primarily of a long tube into which air enters and is mixed with fuel to create a combustible mixture.
	en.wikipedia.org /wiki/Pulse_jet (1100 words)

	Aspirator for pulse-jet air cleaner - Patent 4622996
		Cleaning is accomplished by pulsing air through the filters in a direction opposite to the normal airflow direction to effect self-cleaning during operation of the system without removal and replacement of the filters.
		The pulse valve 24 is typically of the diaphragmtype controlled by a solenoid pilot valve 30 in order to release a pulse of air at high velocity and volume from the tank 12.
		When the pulse valve 24 releases compressed air from the tank, the velocity of the air increases as it exits the outlet 20 due to the reduction in cross-sectional flow area between the tank and discharge pipe 22.
	www.freepatentsonline.com /4622996.html (1626 words)

	PULSEJET
		Pulse Reactors in Blastwave Shroud Seen As Answer to VTOL Lift Problems: The Hiller-Lockwood pulse reactor engines, acoustically paired in a `Blastwave' pressure-gain ram shroud, promises to overcome the rough-field vulnerability of jet lift VTOL propulsion systems because of its absence of moving parts and the fact that it rejects rather than ingests foreign particles.
		The pulse reactor, on the other hand, has low jet downwash temperatures, and has the unique characteristic of rejecting foreign particles which are heavier than air.
		The mechanism of energy transfer from the primary jet to the secondary flow in the augmenter is not fully understood, but Lockwood postulates that a pressure drop on the back side of the gaseous jet piston induces a flow of air in over the lip of the augmenter.
	blastwavejet.com /pulsejet.htm (1564 words)

	:PULSE JET PROJECT (Site not responding. Last check: 2007-10-20)
		I have a few pictures of the pulse jet in the construction stages and as of this moment not yet finished.
		This is not going to be a conventional pulse jet engine as I am building it with modern components which I will not discuss now for fear of ridicule.
		The total length of the jet is about 6 foot long and 6 inches in diameter at the combustion chamber and 3 inches at the tail section.
	www.mini500.com /jet.html (227 words)

	Rotary Pulse Jet Engine
		The basic design of the Rotary Pulse jet engine is extremely simple and would require only 40% of the parts needed in a conventional IC engine.
		The rotor and shaft inclusive of the pistons could be made far lighter than the weight needed to be moved in a conventional engine such as the crankshaft, fly-wheel, cam-shaft, connecting rods and so on, thereby giving the engine a much greater size to power ratio.
		The Rotary Pulse Jet Engine is very simple in design, it consists of a rotor, enabled for movement in one direction only, fixed to an axle of which it is an integral part, revolving inside an outer housing.
	conceptengine.tripod.com /conceptengine/id2.html (677 words)

	Menardi - baghouse types: pulse jet
		The pulse jet baghouse was developed by MikroPul in the 1950's and was designed to allow more air per given area of baghouse, which meant higher air-to-cloth ratios.
		A pulse jet system generally operates at 5-6:1 air-to-cloth ratio.
		In most baghouse designs, a venturi seated at the top of each bag is used to increase air velocity in order to create a large enough pulse to travel down and back up the filter bag.
	www.menardifilters.com /pulse_jet.htm (249 words)

	Junkers Ju EF126 Luft '46 entry
		Since a pulse jet must be brought up to its operating speed, takeoff was achieved by the use of two detachable solid-fuel rockets with 1200 kg (2640 lbs) thrust.
		Since the Argus pulse jet engine's performance worsened with altitude, the EF126 was also to be used in the ground attack role, where an auxiliary load of 400 kg (880 lbs) could be carried beneath the wings.
		The pulse jet was mounted outside the fuselage on the port side behind the wings and a special Seppler Bemag type fuel pump was driven by a small propeller on the nose.
	www.luft46.com /junkers/juef126.html (1470 words)

	PulseJet Dust Collectors / Pulse Jet Bag Collector (Site not responding. Last check: 2007-10-20)
		ur pulse jet dust collectors are ideally suited for sanitary food and drug applications, also pneumatic conveying, central vacuum cleaning — and applications requiring explosion protection.
		Pulse jet dust collectors are available in bottom bag access or top-clean air plenum access in removable head and walk-in plenum designs.
		The pulsejet timer is field-adjustable for pulse duration and interval, and can be equipped to pulse only as required.
	www.tri-mer.com /pulsejet-dust-collectors.html (189 words)

	refrigeration/pulse jet outboard (Site not responding. Last check: 2007-10-20)
		Dean PS The pulse jet outboard is made from the top and bottom of a new 55 gallon drum, welded together leaving a 3/4" gap.
		Lots of fun for a class, though...Pulse jets are an art that is looking for a use.
		Larry keeps on returning to simpler steam driven engines for pumping water, etc. Hi Dean, The interesting point I was attracted to about the pulse burner is it's ability to generate vacuum to draw air into the gasifier stove, burn the wood-gas, pump the exhaust through the stove and out the vent tube.
	solstice.crest.org /pipermail/stoves/2001-August/006111.html (228 words)

	Pulse Detonation Wave Engines
		But a technical analysis of pulse detonation wave engines suggests that engines operating at the thrust levels associated with military aircraft would operate between 100 and 200 Hertz (pulses per second).
		It is also difficult to reconcile a pulse rate of 100-200 Hertz with the observed donut-on-a-rope contrails.
		Assuming a detonation pulse rate of 100 Hertz, this would imply a velocity of 10 kilometers per second, roughly Mach 36 which is 1½ times orbital velocity.
	www.abovetopsecret.com /pages/pdwe.html (814 words)

	Fabric Filters
		The JET III Pulse Collector is the culmination of our continuous development of pulse jet collectors through three generations.
		Pulse collectors periodically inject compressed air into the filter bags, flexing them in a programmed sequence to "pulse off" the dust.
		Like pulse jets, they can be shipped pre-assembled to the job site, ready to set in place.
	www.wapc.com /ff.htm (274 words)

	Influence of Design and Operation Parameters on Bag-Cleaning Performance of Pulse-Jet Baghouse (Site not responding. Last check: 2007-10-20)
		The jet pump curves, which relate the flow rate through the venturi to the average developed pressure by the venturi, were determined by the similar system.
		The intersection of the jet pump curve and the bag operating line, which relates the pressure drop to flow rate across the bag during pulse-jet cleaning, is the system operating point that was used to predict the average pulse pressure in the bag during pulse-jet cleaning.
		The results show that the jet pump curves obtained under different operating conditions can be reduced to the same nondimensional curve, which can be used to facilitate the design and operation of a pulse-jet cleaning system.
	www.pubs.asce.org /WWWdisplay.cgi?9902376 (264 words)

	Details of my pulse jet.
		Due to the fuel system which relied upon the venturi effect to 'draw' fuel from the tank, the tank had to be level with the motor.
		Then I built a number of home designed jets that were never intended to fly, far too heavy!, and discovered that almost anything will run if the small resonator part of the tube is made long enough.
		They had two different pulse jets that looked very similar, but the one I have is the more powerful of the two and a little bigger in diameter.
	freespace.virgin.net /cool.stuff/jet/pulse.htm (1328 words)

	Valveless Pulsjet (Site not responding. Last check: 2007-10-20)
		This jet was invented at the sixties, but the development stopped when the turbojet arrived.
		It's also possible to run this jet with almost any oilproduct as long as it's valorized before it's entering the engine (I use a mixture of diesel and gasoline 50/50).
		This is some sort of a pulse jet, and a series of explosions is what which make thrust.
	www.home.no /andreas.sunnhordvik/English/mechanical/valveless_e.htm (770 words)

	Pulse Jet Engine: The Gokart
		Tomorrow I'll go get that propane tank filled and bolt on the "big pulse jet" which is giving about 90 lbs of thrust.
		I finally got the time last night to mount the 100lbs-thrust pulse jet engine on the kart.
		While this is significantly more than your average passenger plane -- it's not as high as a jet fighter and, more importantly, it means that if I encounter a slope of more than a 1 in 2.6 gradient -- the kart will begin to slow and eventually stop.
	www.aardvark.co.nz /pjet/gokart.htm (1347 words)

	Particulate Baghouses, Pulse Jet Fabric Filters, Intermediate Pressure Pulse Jet Fabric Filters, SP Environmental
		The use of long bags, typically 8m (26-1/4’) or longer is made possible by the use of larger 3-1/2” pulse valves supplied by compressed air headers operating in the range of 2 to 3 bar gauge.
		The increased capacity of the longer bags combined with the compact configuration typical of a pulse jet collector allows for applications serving over 1,000,000 ACFM in approximately 1/2 of the plan area required by a reverse air collector of similar capacity.
		The SP Environmental IP series of pulse collectors was developed through the combined efforts of U.S., European and other international experts.
	www.spcdmg.com /spe_baghouses.asp (287 words)

	Pulse Jet Content (Site not responding. Last check: 2007-10-20)
		A pulse jet is a pipe that is open at one end and has one way valves at the other.
		The first Pulse Jets were made in WWII, the most famous being the V1 bomb that weighed almost 5000 lbs and could fly over 320 mph.
		The small pulse jet I made is a failure.
	home.comcast.net /~zsartell/PulseJetPage.htm (1192 words)

	Jet Powered Models, Pulse Jets
		A pulse jet engine is a jet engine to which the intake of air is intermittent (through valves), resulting in a pulsating thrust.
		It is a jet propulsion engine containing neither compressor nor turbine, equipped with valves in its front that open and shut and so create thrust intermittently, rather than continuously.
		It's a 68 cm wingspan model with a 48cm pulse jet engine, covered with the dust of almost 30 years.
	www.airtoi.com /pulse.htm (857 words)

	Pulse Jet Engine
		Early tests on Jet A1 indicate that this thrust can be lifted to around 180lbs each and, with the addition of an augmentor, a figure of around 220lbs of static thrust per engine should be possible -- for a total of 440lbs.
		At first glance, pulse jets seem pretty simple devices -- there's only one moving part -- however there are some critical relationships between the volumes and lengths of the various engine parts.
		To gather enough empirical information on pulse jet engines to allow the construction of "version two" which will hopefully be lighter, more efficient and more powerful.
	www.aardvark.co.nz /pjet (3254 words)

	www.pulse-jets.com :: View topic - How big a Pulse Jet would I need?
		Keep in mind that sport/scale jet models will typically require a pretty good chunk of ballast in the nose to get the CG where it belongs, so that's an important part of your flying weight.
		A 1 lb thrust jet would WAY out-class these mills, but of course, it would be MUCH bulkier, even if the weight could be kept down to a few ounces.
		Find the thrust falloff rate for a prop that size at the rpm range your engine runs at, you may well be able to use a smaller pulsejet to get the same effects, although making a smaller than 1 lb thrust engine might be a pain in the butt.
	www.pulse-jets.com /phpbb2/viewtopic.php?p=19000 (1847 words)

	JAWMA Paper: A Model for Pulse Jet Fabric Filters (Site not responding. Last check: 2007-10-20)
		A new model for pulse jet fabric filtration is proposed.
		In contrast to the earlier model of Ravin and Humphries,1 which was formulated on the steady state assumption, the present study is aimed at developing a predictive ca-pability for both transient and steady state operations, taking into account the compression effect of filter cakes.
		As a result, the model is particularly useful in developing control algorithms and designing controllers of pulse jet fabric filtration systems.
	www.awma.org /journal/ShowAbstract.asp?Year=2000&PaperID=2 (175 words)

	Steel Dusts Pulse Jet Compact Dust Collector, Beckert & Hiester, Inc.
		This is a pulse jet four cartridge dust collector for the collection of steel dusts and shavings.
		The compressed air header is complete with diaphragm pulse valves, a liquid filled pressure gauge and a petcock drain.
		The pulse system is piped, wired, and tested at the factory.
	www.bhdustcollectors.com /pulsejetsteeldust.htm (300 words)

	Pulse-jet engines. (from jet propulsion) -- Britannica Student Encyclopedia
		A pulse-jet is similar to a ramjet except that a series of spring-loaded, shutter-type valves is located ahead of the combustion section.
		In a pulse-jet the combustion is intermittent or pulsing rather than continuous as in a ramjet.
		Includes information on fusion basics and research, JET engineering data (with detailed diagrams), and an online tour of the facility.
	www.britannica.com /ebi/article-203255?tocId=203255&ct=eb (627 words)

	Re: How do pulse duct jet engines work?
		In the 1950s there were several small helicopter designs which used small pulse jet engines on their rotor tips in place of conventional engines.
		The last time I saw a pulse jet engine was in the early 1960s.
		I purchased a model pulse jet engine called a Dynajet from a model aircraft company to test infrared measuring equipment in our laboratory.
	www.madsci.org /posts/archives/mar99/922773552.Eg.r.html (223 words)

	Pulse Jet Pointers Vol.2 No.6, Dust Collectors, Beckert & Hiester, Inc.
		Scrim is a cheesecloth-like material weighing about 1-1/2 ounces per square yard upon which felt fibers of a pulse jet bag are needled into a mat.
		The scrim is usually of the same material as the felt itself.
		Many magazine ads these days claim new Blow Pipe and Venturi designs that will "boost the air/cloth ratio." As pulse jet technology comes of age, there have been many divergent patterns of Blow Pipe and Venturi design.
	www.bhdustcollectors.com /vol2no6.htm (670 words)

	Pulse-Jet (Site not responding. Last check: 2007-10-20)
		These air-breathing pulse detonation engines utilize supersonic combustion to reduce the amount of oxidizer that has to be carried on board a space launch vehicle.
		These pulse detonation engines complement MSFC's work on supersonic combustion ramjets, as discussed last week in Banner News.
		A Pulse Detonation Rocket Engine Technology Summary may be obtained by clicking on this link.
	www.geocities.com /ultrahiiq/Pulse-Jet.html (210 words)

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