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Topic: Jet turbine


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In the News (Sat 19 Dec 09)

  
  PowerLabs Turbine!
Currently the turbine is started through a barbecue piezo-electric igniter; a porcelain insulator is epoxied into the combustion chamber with high temperature epoxy and a high voltage wire is run from the insulator to the wall of the combustion chamber.
In order for the turbine to be safely operated a few key parameters must not be exceeded: due to the self-sustaining nature of induction fed engines, a turbine is perfectly capable of spinning itself to complete destruction when fed enough fuel.
Turbine tests with nozzle and afterburner: We have welded a 5.5" diameter x 8 inch long pipe with a 3" diameter outlet at the end to serve as a nozzle.
www.powerlabs.org /turbine.htm   (3408 words)

  
  Jet engine - Wikipedia, the free encyclopedia
Jet propulsion only literally and figuratively took off with the invention of the rocket by the Chinese in the 11th century.
The gas turbine was not an idea developed in the 1930s: the patent for a stationary turbine was granted to John Barber in England in 1791.
Since the turbine cannot withstand stoichiometric temperatures, resulting from the optimum combustion process, some of the compressor air is used to quench the exit temperature of the combustor to an acceptable level.
en.wikipedia.org /wiki/Jet_turbine   (6738 words)

  
 Gas turbine - Wikipedia, the free encyclopedia
This is directed over the turbine's blades, spinning the turbine and powering the compressor, and finally is passed through a nozzle, generating additional thrust by accelerating the hot exhaust gases by expansion back to atmospheric pressure.
Gas turbines are described thermodynamically by the Brayton cycle, in which air is compressed isentropically, combustion occurs at constant pressure, and expansion over the turbine occurs isentropically back to the starting pressure.
The power turbines in the largest industrial gas turbines operate at 3,000 or 3,600 rpm to match the AC power grid frequency and to avoid the need for a reduction gearbox.
en.wikipedia.org /wiki/Gas_turbine   (2906 words)

  
 Gas Turbine Propulsion
Early gas turbine engines worked much like a rocket engine creating a hot exhaust gas which was passed through a nozzle to produce thrust.
Because gas turbine engines are so important for modern life, we will be providing a lot of information about turbine engines and their operation.
Turbine engines come in a wide variety of shapes and sizes because of the many different aircraft missions.
www.grc.nasa.gov /WWW/K-12/airplane/turbine.html   (547 words)

  
 Military jet engines (both turbofan, turbojet)
A jet engine is an engine that discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of motion.
This broad definition of jet engines includes turbojets, turbofans, rockets and ramjets and water jets, but in common usage, the term generally refers to a gas turbine used to produce a jet of high speed exhaust gases for special propulsive purposes.
The key to a practical jet engine was the gas turbine, used to extract energy to drive the compressor from the engine itself.
engines.fighter-planes.com /jet_engine.htm   (5422 words)

  
 Jet Engines
A long shaft connects the turbine and compressor; the spinning turbine uses its power to turn the compressor.
The "jet" of a jet engine is the hot stream of exhaust that blasts out the back to produce thrust.
By using a larger set of turbines, it is possible to tap off still more of this power.
www.centennialofflight.gov /essay/Evolution_of_Technology/jet_engines/Tech24.htm   (1984 words)

  
 Gas-Turbine Jet Engine: The Gokart
I think that just about everyone who has built, or contemplated building their own jet engine has also dreamed of using such an engine to power a small vehicle such as a gokart.
Well, in order to make some use of the power shaft addition to my gas turbine engine I figured I might as well build such a vehicle.
Another thing I'm not sure about is the amount of back-pressure that a stalled power turbine might produce when the kart is stationary and the engine is at idle.
aardvark.co.nz /pjet/turbine5.htm   (1397 words)

  
 Jet Fuel, Jet Fuels, Aviation Fuel, Jet Fuel Bladders
Jet Fuel, Jet Fuels, Aviation Fuel, Jet Fuel Bladders
Aviation Turbine fuel, Jet Fuel Tank, Fuel Bladders
Aviation Turbine fuel, Jet Fuel Tank, Fuel Bladders
www.jet-fuel.eu   (1461 words)

  
 Larrys homemade Gas Turbine Jet Engine
I thought Burce was more into pulse jets than turbines but in 2000 he did a turbine and just the other day I found myself discovering great info and help on his website...great links to how-to balance things and make ignitors, AND he manages a DIY turbine forum with 3000 members!
Turbocharger Jet Engine by Andy Clay & Russ Denyer.
The creators, Kimmo, Sami, Matti and Kimmo, call it the Eunuch 1 which is a homemade turbine engine mounted on a bicycle which they drag race in the university parking lot.
www.pfranc.com /projects/turbine/top.htm   (1823 words)

  
 Jet engine Summary
A jet engine is an engine that accelerates and discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of motion.
The gas turbine was not an idea developed in the 1930s: the patent for a stationary turbine was granted to John Barber in England in 1791.
Since the turbine cannot withstand stoichiometric temperatures, resulting from the optimum combustion process, some of the compressor air is used to quench the exit temperature of the combustor to an acceptable level.
www.bookrags.com /Jet_engine   (7030 words)

  
 Gas turbine   (Site not responding. Last check: )
Although the gas turbine must be started by some external means (a small external motor or other source, such as another gas turbine), it can be brought up to full-load (peak output) conditions in minutes as contrasted to a steam turbine plant whose start up time is measured in hours.
Reheat in a jet engine is accomplished by adding an afterburner at the turbine exhaust, thereby increasing thrust, at the expense of a greatly increased fuel consumption rate.
3): the compressor, the combustor and the turbine.
www.students.itu.edu.tr /~yildirimo4/ozet.htm   (3003 words)

  
 The Josef Hasslberger page: Technology
In fact Schauberger's turbine wheel is of conical shape, with 'ribs' spiralling down the surface of the cone in a corkscrew pattern, and it is located in the center of the jet of water.
Turbines of current design "hack" the water into thousands of destructive counter flows and cross vortices, thus wasting much of the available energy and causing the common problem of cavitation, a super fast corrosion and destruction of turbine blade material.
A jet turbine, distinguished by the fact that in the path of the water jet and aligned with its axis so as to split the jet, there is a turbine wheel in the form of a cone, the surface of which is formed of corkscrew-like blades.
www.hasslberger.com /tecno/tecno_2.htm   (3183 words)

  
 Composite Centrifugal Compressor
These turbines were meant to generate shaft power, but the attention was soon transferred to the development of the turbojet engine as a method for propelling aircraft.
The equations used in calculating the overall performance of a theoretical gas turbine are include in Ref.
The nozzle pressure ratio is given as the ratio between the turbine outlet stagnation pressure and the ambient pressure.
home.global.co.za /~reaper01   (2839 words)

  
 Chrysler turbine engines and cars
The first turbine engine had an acceleration lag of seven seconds from idle to full-rate output; the second engine required three seconds to achieve maximum vehicle acceleration, while this new engine required less than one and one-half seconds to accomplish the same performance.
To qualify initially as a turbine prospect, a candidate must own a car (or, be a member of a household in which a car is owned by the head of the household) and must have a valid driver's license.
Although the progress of the gas turbine and its advantages are impressive, additional progress in improved component efficiencies (particularly in the compressor) and the future possibility inherent in increased operating temperatures, are extremely promising.
www.allpar.com /mopar/turbine.html   (5095 words)

  
 The Rover JET Turbine   (Site not responding. Last check: )
When they saw that the jet engine was going to work, Rolls-Royce took it over, so I lost contact before it was fitted in the bomber for the first test flight.
The number plates at Burnley were coming up to JET, and the Rover Company acquired the first three of the set JET 1, 2 and 3.
Some gas turbines were used to start the Vulcan Bombers, and the Hovercraft, and small versions were used for very rapid pumping.
www.rover.org.nz /pages/jet/jet3.htm   (809 words)

  
 The Rover JET Turbine   (Site not responding. Last check: )
The Rover gas turbine is being developed for general use in the range of 100 to 2OO horse power.
The turbine rotor is machined from a Nimonic 90 forging complete with blades and is used to drive the compressor impellor and all auxiliaries.
Ground single helical gears are used with oil jet lubrication and the power turbine is mounted on the end of the high speed pinion shaft.
www.rover.org.nz /pages/jet/jet4.htm   (493 words)

  
 OS:VS-Jet-Turbine - PESWiki
The water-vortex (jet of water) is produced inside a ribbed copper-cone, by the conical+ribbed shape and gravity, and the resulting water-jet is rolled into the copper-impeller, which turns the generator, producing energy in a silent, effective way.
Due to the force of gravity and the elastic modulus (ed: fluid dynamics) of water, a very large amount of potential energy in the storage vessel is converted to kinetic energy as the water is released into the oscillator/(ed:impeller).
It seems that Schauberger actually used a small turbine of this design in a stream of water near the forest wardens' building during those years, but no reliable records are available.
peswiki.com /index.php/OS:VS-Jet-Turbine   (999 words)

  
 How A Model Jet Engine Works
A model jet engine can vary in design from one model to another, but they all work on the same principle: at the front of the engine is a spinning compressor - much the same as one to be found in a car supercharger.
At the rear of the model jet engine is a turbine, which is also connected to the front compressor by way of a shaft running through the center of the combustion chamber.
As the hot air is forced out the back of the engine, it passes through this turbine and causes it to spin at high speed; this in turn causes the front compressor to spin, sucking in more air for the whole process to continue.
www.rc-airplane-world.com /model-jet-engine.html   (606 words)

  
 start your engines! - Gas turbines   (Site not responding. Last check: )
The gas turbine is in many respects similar to the steam turbine.
Gas turbines are of importance in power stations, but also in ships and locomotives, and in form of the jet engine also in airplanes, of course.
The large quantity of air which is sucked in by the fan in such a way, is divided in modern engines: One part passes through the turbine, the other part goes around the turbine, it "bypasses" it and is therefore also called "bypass air".
library.thinkquest.org /C006011/english/sites/gasturbine.php3?f=2&b=50&j=1&v=0   (599 words)

  
 Turbine Marine 1500 hp Jet Turbine Engine Package
Jet turbine engines are completely disassembled and inspected by our in-house technician with 25 years of jet turbine maintenance and turbine engine development experience from the U.S Army.
The jet turbine fuel system is based on an Aero-motive height pressure fuel pump with a billet fuel / water separator plumbed in the fuel line before entering the Turbine.
TURBINE MARINE’S system recovers this fuel in a tank that is located in the bilge, and at the time the ignition key is activated to start the Turbine it pumps the fuel back into the fuel tank where it can be safely used again.
www.turbinemarine.com /turbine_standard.html   (1149 words)

  
 Steam turbines
Since it is a steam jet and no more a water jet who meets the turbine now, the laws of thermodynamics are to be observed now.
Steam turbines are operated today of course no longer with normal water vapour only, but depending on the field of application also with other materials, e.g.
Therefore it is to be paid attention when building steam turbines to a further problem: With the number of passed impellers also the volume increases, which leads to a larger diameter of the impellers.
library.thinkquest.org /C006011/english/sites/dampfturbine.php3?v=2   (756 words)

  
 CNN.com - Schumacher downed by jet fighter - Dec. 11, 2003
The jet and the Ferrari lined up on parallel runways and went full throttle when the green signal came, mixing the deep sound of a jet turbine with a high-pitched Formula One engine.
In the final race of 900 meters, the jet finished in 13.0 seconds and the Ferrari was 0.2 seconds behind.
The jet appeared to require little attention throughout the event, while Schumacher and his Ferrari were attended to by the Italian team's regular pit-stop crew during Formula One races.
cnn.com /2003/SPORT/12/11/f1.fighterjet.ap/index.html   (584 words)

  
 Dan's Jet Turbine Engine
Well, here she is:) This is a jet turbine engine that I built myself in a stretch of about 3 weeks.
This turbine engine has been named "Intimidator" in honor of Dale Earnhardt, NASCAR's greatest driver, who lost his life in a last lap crash in the 2001 Daytona 500.
Tank was designed this way to hopefully allow the fuel to cool the oil somewhat, but the design has not been given a fair test yet to determine effectiveness.
www.geocities.com /giles241/turbine.htm   (454 words)

  
 Building A Primitive Turbine Engine
My ultimate goal is to add a second turbine, and extract energy to run a generator or do something else useful.
Someone on the turbo turbine mailing list is using a homemade air motor running on compressor bleed air to power a generator.
It doesn't normally run hot enough that the turbine can be seen to glow in daylight, so I looked around for a problem and found that the PVC air pipe was trying to blow off again, and was leaking air badly.
www.junkyardjet.com /primitive.html   (6149 words)

  
 Jet Turbine Locomotives
It uses a turbine engine to generate power, instead of the diesel engine used in nearly all locomotives in North America for the past 40 years.
It is not the first time a jet turbine has been used to move a train.
Best known as propulsion engines for jet aircraft, turbines are also adapted to drive backup electrical generators for utilities and to power pipelines.
www.you.com.au /news/1338.htm   (611 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)

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