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Topic: Pulse jet engine

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Pulse detonation engine

Ramjet

Turbojet

Internal combustion engine

Joule cycle

Stirling cycle

Heat engine

Jet engine

Junkers Jumo 004

Bachem Ba 349

Atkinson cycle

V1 flying bomb

Combustion

German missiles of WW2

Bachem Ba 349 Natter

	Pulse jet engine - Wikipedia, the free encyclopedia
		A pulse jet engine (or pulsejet) 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 gases.
		The valving is accomplished though the use of reed valves or, in a valveless pulse jet engine, through aerodynamics.
		The cycle frequency is primarily dependent on the length of the engine.
	en.wikipedia.org /wiki/Pulse_jet_engine (956 words)

	Pulse detonation engine - Wikipedia, the free encyclopedia
		The pulse detonation engine is a concept currently in active development to create a jet engine that operates on the supersonic detonation of fuel.
		The basic operation of the PDE is similar to that of the pulse jet engine; air is mixed with fuel to create a flammable mixture that is then ignited.
		Key difficulties in pulse detonation engines are achieving DDT without requiring a tube long enough to make it impractical and drag-imposing on the aircraft; reducing the noise (often described as sounding like a jackhammer); and damping the severe vibration caused by the operation of the engine.
	en.wikipedia.org /wiki/Pulse_detonation_engine (946 words)

	Pulse jet engine - TheBestLinks.com - Pulsejet, Air, Cruise missile, Engine, ... (Site not responding. Last check: 2007-10-13)
		A pulse jet is comprised of a one-way air inlet valve, a combustion chamber, and an (acoustically) resonant exhaust tube (tailpipe).
		The principle military use of the pulse jet engine was in the V-1 "buzz bomb".
		Pulse jets are mainly used today in model airplanes, though some experimenters continue to work on improved designs, including pulse detonation engines.
	www.thebestlinks.com /Pulsejet.html (1166 words)

	Wikinfo \| Pulse jet engine
		A pulse jet 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 pulse jet comprises an inlet arrangement, a one-way air inlet valve, a combustion chamber, and an (acoustically) resonant exhaust tube (tailpipe) with integral propelling nozzle.
		The principal military use of the pulse jet engine was in the V-1 "buzz bomb".
	www.wikinfo.org /wiki.php?title=Pulse_jet_engine (1050 words)

	Wikinfo \| Jet engine
		A jet engine is a type of air-breathing engine, often used on aircraft.
		The engine generates thrust because of the acceleration of the air through it - the equal and opposite force this acceleration produces (Newton's third law) is thrust.
		The Century series of US jets featured a number of variations on this approach, usually with the leading blade at the outer vertical edge of the intake which was then angled back inwards towards the fuselage.
	www.wikinfo.org /wiki.php?title=Jet_engine (3446 words)

	Unnamed WWW Page
		Pulse jet is in effect a wave engine with a wave percompression ratio of about 1.0.
		The function of the intake valves in the conventional pulse jet is to prevent the reversal of flow at the inlet and therefore a negative momentum transport when the combustion chamber pressure becomes higher than the free stream stagnation pressure.
		A pulse jet working on this principle is noteworthy that the only feature which distinguishes the configuration of this duct from the conventional ram jet is the sharp change in cross-section at the combustion chamber inlet.
	snappyboy.freeservers.com (861 words)

	The Turbine Engine
		The engine are relatively small and compact, about half the size of a reciprocating IC engine of the same horsepower.
		When the turbine engine is operating, the first- stage turbine rotates the centrifugal compressor run impeller to draw in air and compress it.
		The gas turbine engine is rated at 130 horsepower at 3600 rpm output shaft speed and 425 lb-ft torque at zero output shaft speed under ambient temperature and atmospheric pressure conditions of 85 F and 29.92" Hg, respectively.
	conceptengine.tripod.com /conceptengine/id4.html (936 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)

	Sonic energy perforated drum for rotary dryers - Patent 4334366
		The pulse jet engine includes a combustion chamber 27 and a pair of exhausts, which are referred to as the inlet 25 and the tailpipe 26.
		To increase thrust from the pulse jet engine, a pair of tubular augmentors or jet pumps 28 and 29 are placed, respectively, in the line of exhaust from inlet pipe 25 and tailpipe 26.
		The pulse jet engine preferably consumes propane, although pulse jet combustors are relatively insensitive to the particular fuel used and will operate on a wide variety of air-reacting fuels, preferably, for example, gasoline, fuel oils, butane, and producer gas.
	www.freepatentsonline.com /4334366.html (6092 words)

	Eugene Michael Gluhareff (Site not responding. Last check: 2007-10-13)
		Gluhareff pioneered the use of liquid propane as a fuel for jet engines and a series of ultra-light portable one-man-helicopters, MEG-1X, MEG-2X and MEG-3X which were designed and built by his own company, Gluhareff Helicopters Corporation.
		All of which were powered by the G8-2 Pressure Jet Engine on the blade tip and test flown by himself.
		The G8-2 Jet Engine had the honor of gracing the cover of Mechanics Illustrated in May of 1973 and again in January 1975 in the Jet Powered Go-Kart.
	tipjet.com /EMGbio.htm (569 words)

	C (Site not responding. Last check: 2007-10-13)
		The pulse jet is one of the most simple jet engines there is, that's why I built one.
		As the shockwave reaches the end of the exhaust tube it has reduced the pressure in the combustion chamber to under the atmospheric pressure, causing the valves to open and suck in a new mixture of air and fuel.
		These were bombs with 950 Kg of TNT mounted with wings and a pulse jet engine running at 50 ignitions per second and a ingenious mechanical guidance system.
	home.c2i.net /chon/pulse_jet.htm (342 words)

	pulsejet
		The pulse jet engine has been used and experimented by many people, since the start of World War I. The Germans used the pulse jet engine for their V-1 rocket.
		The length of the engine is 22 1/2".
		The length and diameter of the small part of the engine is 15" and 1 1/2" dia.
	www.share4.esd105.wednet.edu /reifelpb/pulsejet.htm (703 words)

	:PULSE JET PROJECT (Site not responding. Last check: 2007-10-13)
		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)

	Engine
		There is an overlap in English between two meanings of the word "engineer": 'those who operate engines' and 'those who design and construct new items'.
		Practically every device from the industrial revolution was referred to as an engine, and this is where the steam engine gained its name.
		In the context of propulsion systems, an air breathing engine is one that uses atmospheric air to oxidise the fuel carried, rather than carrying an oxidiser, as in a rocket.
	www.free-download-soft.com /info/engine.html (240 words)

	The Gluhareff Pressure Jet Engine
		Today's pressure jet engine is the result of some 30 years of refinement.
		The Gluhareff Pressure Jet engine is a remarkably simple device made of thin-wall stainless steel tubing and sheet metal.
		Gluhareff's design, engineers had understood that it was possible to produce thrust by using the energy of pressurized propane to induce the fuel/air mixture.
	www.rqriley.com /gluharef.html (1264 words)

	Valveless Pulsjet (Site not responding. Last check: 2007-10-13)
		This jet was invented at the sixties, but the development stopped when the turbojet arrived.
		The engine can be built in many different sizes, as long as the relationships between the different openings are kept.
		The propane is fed directly into the engine through the main valve at the top of the bottle, the needlevalve, a hose and metal tube connected to the combustion chamber.
	www.home.no /andreas.sunnhordvik/English/mechanical/valveless_e.htm (770 words)

	concept4 (Site not responding. Last check: 2007-10-13)
		Frustrated I removed the drive train, mounted a load structure on the rear and installed a Propane fueled, valveless pulse jet engine of 90 pounds of thrust.
		It ran well on the static stand but would go out of pulse (which was about 60 cycles or explosions per second) if you so much as looked at it wrong.
		Amazingly, this is a valveless pulse jet and cannot explode as it's combustion chamber is open all the time.
	www.sonicwind.com /concepts4.html (416 words)

	Engine pictures (Site not responding. Last check: 2007-10-13)
		The large, round, thick metal disc at the bottom is the cylinder head, the plunger-shaped things with springs around them at the top of the picture are the intake and exhaust valves for the chamber, and the copper thing in the middle-top is the spark plug.
		This is a picture of the front of a turbofan engine, the kind of engine that is used in commercial airliners.
		As if the pulse-jet engine wasn't simple enough already, here is a design for a pulse-jet engine that requires NO moving parts or valves - just a housing of this shape and a fuel and air supply (and of course, you need to start it first to run it).
	www.amirsaleh.com /Edwin/IndStudy/RealPics.html (584 words)

	Junkers Ju EF126 Luft '46 entry (Site not responding. Last check: 2007-10-13)
		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)

	THE WORLD'S SIMPLEST "PULSE JET" HEATER! (Site not responding. Last check: 2007-10-13)
		Believe it or not, this heater functions on the same principle as the pulse-jet engine, which was used in the earliest missiles.
		jet engine, which was merely a reinforced cylinder with a flap-equipped inlet, a combustion chamber, and an exhaust duct.
		The engine's drawbacks-inconsistent fuel consumption, noise, and a cogent vibrationmake it impractical for aviation but perfectly acceptable for other purposes, such as a space heater.
	www.motherearthnews.com /printable/1986_January_February/The_World_s_Simplest__Pulse_Jet__Heater_ (1567 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.
		The Pulso I (Schmid-Argus, art.nr MT/K 405, DM 12,-), a 944mm pulsejet engine.
	www.airtoi.com /pulse.htm (857 words)

	Pulse-Jet (Site not responding. Last check: 2007-10-13)
		More testing today but the jet is proving to be rather tricky in the tuning department, so I still haven't connected it up to the Penny.
		The Mk-2 engine ran for a few seconds while running on propane with 3 of the inlet tracts blocked, you can just see the start of the exhaust pipe starting to glow.
		The Mk-2 engine finally burst into proper life today which was splendid, I had to block one inlet off and cut two others right down, but it was then happy to run on the propane.
	www.pennyfarthing.dabsol.co.uk /pulse-je.htm (287 words)

	Pulse Burners? (Site not responding. Last check: 2007-10-13)
		At Aprovecho, we've built pulse jet outboard motors from 55 gallon drums, crop dryers, heaters, and engines.
		The most vernacular version was a valveless pulse jet engine made completely from sand and clay.
		We have built prototypes of valveless pulse jets powered by the sun to lift water from wells that might be suitable but the design needs more development.
	solstice.crest.org /pipermail/stoves/2001-August/006101.html (264 words)

	After Combustion:Detonation! (Site not responding. Last check: 2007-10-13)
		Those contracts could be for superefficient engines for subsonic jetliners, which would chop fuel consumption by an amount that engineers would "kill their grandmothers" to get, Lidstone jokes, or for supersonic, unmanned aerial vehicles or manned fighters.
		Pulse detonation would also offer cheaper access to space, saving tons of liquid oxygen and fuel by powering vehicles from the ground to high altitude and hypersonic velocity, where conventional rocket engines would take over to lift them into orbit.
		Pulse detontation is not easy to achieve given standard fuels and reasonable detonation tube lengths, so a bit of skepticism is always warranted.
	www.freerepublic.com /focus/fr/962975/posts?page=7 (1769 words)

	RMCybernetics - DIY Homemade Mini Jet Engine
		The valveless pulse jet engine or pulse detonation engine is the most simple type of jet and is therefore popular among hobbyists as a DIY project.
		This pulse jet is made from modified copper plumbing parts.
		The spark rate could be controlled by varying the power to a HV capacitor connected in parallel with the spark plug.
	www.rmcybernetics.com /projects/DIY_Devices/homemade_jet_engine.htm (185 words)

	Pulse Jet Engine
		One thing that immediately became apparent however, is that if the engines do lose synchronization, there's a definite tendency for the exhaust of one to be ingested by the other, resulting in a premature flame-out.
		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.
	www.aardvark.co.nz /pjet (3254 words)

	Pulse Jet Content
		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)

	Racing Articles: Rotary Pulse Engine.
		Here is an engine design that may change all that.
		This design will give a mileage of 500mpg plus, even in heavy traffic conditions together with zero pollution.It is based on the experimentation and innovation of Robert Goddard, the American born inventor and innovator and father of the rocket age.
		This is a tremendous amount of horse power equating to 255 hp @ 2400 rpm, when linked to a fly-wheel this extra energy can be fed into the fly-wheel and later drawn off for 45 to 60 seconds at a time thereby yielding the tremendous mileage earlier claimed.
	racingarticles.com /article_racing-32.html (357 words)

	Pulse-jet water propulsor (US4057961)
		A new heat engine in which liquid moves in a tube, one end of which is closed.
		Embodiments using compressed air and diesel cycles are disclosed which take the place of the fluid-vapor interface by utilizing a driven piston.
		Heat engine in the form of a water pulse-jet
	www.delphion.com /details?pn=US04057961__ (478 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)

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