PDF Publication Title:
Text from PDF Page: 086
Chapter4. DataAnalysis 74 nozzle exit plane described in the Section above causes the sound field of the LC engine configuration to have a higher maximum SPL. Interestingly, this only oc- curs when the a flight stream is present; during the no FS test described above, the SC nozzle had a greater maximum SPL at all frequencies. This fact is further evidenced by the comparison plot in Fig. 4.29 (blue color equals to less absolute sound pressure on the long cowl configuration). From left to right, the plot first shows the offset of the long cowl nozzle exit plane along the abscissa, then the high intensity sound source followed by an area of relatively low intensity mix- ing noise. Figure 4.29: Long cowl nozzle configuration (DLR 914) compared to the short cowl noz- zle (DLR 325), sideline condition, no wing installed, TOB 2000 Hz. 4.7 Remarks This Section contains concluding remarks on the test conduction and the digi- tal tools used for data assessment. Judging by the availability and readability of the raw data, the test has been carried out meticulously. The previous Sections highlighted some difficulties regarding the raw data validity, however. This con- cerns the quality of the microphones, that proved to be compromised in the high- frequency range at the most tenuous test conditions, showing significant differ- ences in their frequency response. Moreover, the spacing of the microphones was not optimised for high-frequency sound immision, especially so for the rear sec- tion of the array, resulting in extensive aliasing effects for higher TOB plots. It is therefore advised to match the microphone spacing to the tracewave length crite- ria presented in Sect. 4.1 and optimise the spacing accordingly if comprehensivePDF Image | Investigation of wing installation effects on the sound field of a model jet engine
PDF Search Title:
Investigation of wing installation effects on the sound field of a model jet engineOriginal File Name Searched:
thesis-wing-install-effects-jet-engine.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 (Standard Web Page)