PDF Publication Title:
Text from PDF Page: 015
Master Thesis Report Introduction 1|Introduction In Europe, the Advisory Council for Aeronautical Research has established ambitious targets to sub- stantially reduce fuel consumption, C02, NOx and noise emission by 2020 under the Clean Sky project. These requirements demand a novel configuration for air vehicles, which suggest a highly integrated components for optimum overall performance. Improved propulsion system architecture are of pri- marily importance in achieving these goals [11]. According to recent estimates, a 1% reduction on fuel burn can result in savings of 1 million per engine year. Other than fuel consumption, noise also plays an important role in the commercial engine business with growing tighter regulations. Increased noise emission can result in curfew at air- ports, which increases the overall operational costs due to reduced airport capacity in a given period of time. With regards to engine design, fuel consumption, emissions, noise, drag and weight plays a vital role in the overall aircraft performance. Propulsion airframe integration (PAI) is also an important element in meeting future aviation goals. Hybrid wing body has become increasingly popular as a result of increased aerodynamic efficiency as compared to conventional airframe design. Such a configuration blurs the division between fuselage and wings. The Blended Wing Body (BWB) is one such configuration, where the propulsion system is mounted on the upper aft surface of the fuselage. PAI on a BWB can be achieved by either pod- ding the engines or embedding them onto the aft fuselage section. While podded engines offer the advantage of ingesting uniform flow into the engine, this concept is however associated with increased structural mass, drag and consequently increased fuel consumption. Embedding the engines into the fuselage implies the ingestion of the boundary layer. This concept has shown to provide reduction in the overall fuel burn percentages as a result of reduced momentum deficit. The momentum wake trailed by an aircraft has both lift induced and viscous contributors. While the lift induced component is essentially fixed, the viscous portion can be reduced through boundary layer ingestion. The low momentum fuselage boundary layer is re-energized by the propulsion system before exiting into the atmosphere. As such, the entire momentum wake deficit of the aircraft and consequently the total drag of the aircraft is reduced. As a result of BLI, the inlet suffers from a lower mass averaged stagnation pressure. This results in an overall loss to the thermodynamic cycle of the engine as well as increased viscous losses. Another associated concept with boundary layer ingestion in BWB is the use of a distributed propulsion system over the aft fuselage. It has been shown by [12] that a 3 engine configuration demonstrated a 5% reduction in fuel consumption for a 2% increase in pressure loss. It was also found that the potential of BLI is better for larger engines than for smaller engines as the latter incur high losses in efficiency due to scale effect which overrides the benefits of BLI. Therefore a careful selection of the number of engines as well as the proper design of the fan blade are required in order to maximise engine performance while taking advantage of the reduced momentum deficit. 2PDF Image | Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow
PDF Search Title:
Aerodynamic Design of the NASA Rotor 67 for Non Uniform InflowOriginal File Name Searched:
nasa-rotor-67.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 |