PDF Publication Title:
Text from PDF Page: 003
'- 3 a device called a diffuser. The diffuser has a smaller opening at its front than at its'rear, so that the velocity of the air is decreased as it passes along the duct having a. gradually increasing cross section. In this process part of the velocity head of the entering air is converted into pressure head in passing through the diffuser. In the combustion chamber which normally follows the diffuser, the pressure is therefore higher "by an amount depending upon the characteristics of the diffuser and upon the forward velocity of the device. A properly designed diffuser accomplishes this trans- formation of velocity head into pressure head with high efficiency. In general "both the efficiency and the power output of a gas turbine can "be increased hy raising the temperature of the ga.se s entering the turbine. The ability of the turbine blades to withstand high temperatures, while sub- jected to the enormous stresses which accompany rotation at high speeds, now limits the maximum permissible operating temperature to a value more than lpOO0? below that which can be obtained by burning ge.solinc in air. The temperature of the ga.s entering the turbine is kept within the permissible range by using an excess of air, usually about four times the amount actually required to burn the fuel completely. Hence the ga.s emerging from the turbine still contains much oxygen which can be used for additional combustion, if desired. The fact that this oxygon is present in the jet leaving the turbine of a turbo-jet engine ha;s made possible the development of a. device known as a tall—pipe burner or thrust augmenter for application when sudden bursts of , power arc required. This type of thrust augmenter is thus essentially a combustion chamber of the ram-jet type installed in the tail pipe of a turbo- jet engine, so that extra fuel may bo burned in the gases after they omerge from the turbine and before they leave the tall pipe. 3y this means the thrust can be increased materially above that of the normal jet. Since much more fuel is required per unit of additional thrust resulting from the augmenter than per unit thrust from the engine operating normally, the thrust augmenter must be considered as a device to be used only for emergencies. The exhaust genes- from reciprocating engines can be directed rearward in the form of jots which produce forward thrust. This process also is called thrust augmentation, and there are still other ts^pos of thrust aug- mentors which need not be considered here. The type of engine employed in the German V-l robot bomb is referred to variously as the intermittent or prise jet the resonance jet and the reso- , jct. Like the ram jot it ha.s neither mechanical compressor nor turbine. It docs have valves at the front which open to admit a.ir, then are closed by the explosion which follows each admission of fresh air. The adjectives intermittent and pulse have been applied since the combustion occurs as a. succession of sopanate and distinct explosions. After each explosion in a pulse jet, the hot a.ir escapes through the rear a„t high velocity and causesPDF 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 |