PDF Publication Title:
Text from PDF Page: 004
-li- the pressure in the combustion chamber to fall below that of the atmosphere. When this condition is attained, atmospheric air opens the valves and rushes into the combustion chamber. Thus the pulse jet will operate while station- ary, once a single explosion is set off in the combustion chamber. However, when the pulse jet is moving forward, ordinary ram also adds to the quantity of air entering through the valves, so that greater thrust can be developed when the engine is moving forward. In all jet engines the ignition can be shut off once combustion is started. Since there are intermittent explosions in the pulse jet it might be thought that a continuous or a timed spark would be required. However this is not the case ordinarily, since, after the first explosion, successive charges are ignited by contact with hot gas or hot metal parts. The frequency of the explosions in a pulse jet is determined by the dimensions of the unit, which acts somewhat like an organ pipe. The theory of this type of power plant is more complicated and less completely understood than that of other types of jet engine. 'THE RATING OE JET ENGINES In rating power plants which do not utilize jets for propulsion, the concepts of power and efficiency have been found most useful, primarily because these characteristics of a given engine do not vary greatly with flight velocity. This is not true for a jet engine, for which the power is the product of thrust and forward velocity, provided that the velocity has resulted solely from the action of the jet engine being considered. Thus if a jet engine is to be rated on a power basis, great care must be exercised in specifying the operating conditions, particularly the flight velocity. On the other hand, the thrust or force produced by a jet is much less dependent upon the operating conditions than is the power, and the thrust is therefore a more useful characteristic of the jet engine. As an example, consider the operation of a reciprocating engine and of a jet engine on a test stand, The former develops power which must be absorbed and which can be measured by means of torquemeter, brake, or dynamometer. The jet engine requires no such power absorber, since no power is developed. However a forward thrust, which can be perceived and measured readily, is developed by the jet and in this instance is called the static thrust to indicate that it is developed when the .engine is at rest with respect to the earth and its atmosphere., , If it is felt desirable, for comparative purposes, to express the rating of a jet engine in terms of power, this can bo done if both the thrust and velocity are known, but only when the engine being rated is solely responsi- ble for all the velocity which has been attained. Under these circumstances the power is the product of thrust and velocity, and is usually designatedPDF Image | GAS TURBINES AND JET PROPULSION INTRODUCTION 1947
PDF Search Title:
GAS TURBINES AND JET PROPULSION INTRODUCTION 1947Original File Name Searched:
GOVPUB-C13-1ce6868d7f7ac1c4417154d72ac4d499.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |