Andere Kunden interessierten sich auch für
![Characterizing Effects and Benefits of Beam Defocus on High Energy Laser Performance under Thermal Blooming and Turbulence Conditions for Air-to-Groun]( "Characterizing Effects and Benefits of Beam Defocus on High Energy Laser Performance under Thermal Blooming and Turbulence Conditions for Air-to-Groun")
Characterizing Effects and Benefits of Beam Defocus on High Energy Laser Performance under Thermal Blooming and Turbulence Conditions for Air-to-Groun62,99 €![Leadership Criteria under Maximum Performance Conditions]( "Leadership Criteria under Maximum Performance Conditions")
Leadership Criteria under Maximum Performance Conditions61,99 €![Low Probability of Intercept Waveforms via Intersymbol Dither Performance Under Multipath Conditions]( "Low Probability of Intercept Waveforms via Intersymbol Dither Performance Under Multipath Conditions")
Low Probability of Intercept Waveforms via Intersymbol Dither Performance Under Multipath Conditions61,99 €![Air University Research: The Capabilities of Agile Combat Support under Wartime Conditions for the 21st Century]( "Air University Research: The Capabilities of Agile Combat Support under Wartime Conditions for the 21st Century")
Air University Research: The Capabilities of Agile Combat Support under Wartime Conditions for the 21st Century61,99 €![Manufacturing and Evaluation of a Biologically Inspired Engineered Mav Wing Compared to the Manduca Sexta Wing Under Simulated Flapping Conditions]( "Manufacturing and Evaluation of a Biologically Inspired Engineered Mav Wing Compared to the Manduca Sexta Wing Under Simulated Flapping Conditions")
Manufacturing and Evaluation of a Biologically Inspired Engineered Mav Wing Compared to the Manduca Sexta Wing Under Simulated Flapping Conditions60,99 €![Group Performance in Military Scenarios under Deceptive Conditions]( "Group Performance in Military Scenarios under Deceptive Conditions")
Group Performance in Military Scenarios under Deceptive Conditions61,99 €![Modeling Biodegradation of Chlorinated Groundwater Contaminants Under Iron-Reducing Conditions of a Constructed Wetland: A System Dynamics Approach]( "Modeling Biodegradation of Chlorinated Groundwater Contaminants Under Iron-Reducing Conditions of a Constructed Wetland: A System Dynamics Approach")
Modeling Biodegradation of Chlorinated Groundwater Contaminants Under Iron-Reducing Conditions of a Constructed Wetland: A System Dynamics Approach61,99 €
One of today's most important and challenging technological problems is the development of advanced materials and processes required to design and build a fleet of supersonic High Speed Civil Transport (HSCT) airliners, a follow-up to the Concorde SST. The innovative combustor designs required for HSCT engines will need high-temperature materials with long-term environmental stability. Higher combustor liner temperatures than today's engines and the need for lightweight materials will require the use of advanced ceramic-matrix composites (CMC's) in hot-section components. The HSCT is just one example being used to demonstrate the need for such materials. This thesis evaluates silicon carbide (SiC) as a potential base material for HSCT and other similar applications. Key issues are the environmental durability for the materials of interest. One of the leading combustor design schemes leads to an environment which will contain both oxidizing and reducing gas mixtures. The concern is that these environments may affect the stability of the silica (SiO2) scale on which SiC depends for environmental protection. A unique High Pressure Burner Rig (HPBR) was developed to simulate the combustor conditions of future gas turbine engines, and a series of tests were conducted on commercially available SiC material. These tests are intended as a feasibility study for the use of these materials in applications such as the HSCT. Linear weight loss and surface recession of the SiC is observed as a result of SiO2 volatility for both fuel-lean and fuel-rich gas mixtures. These observations are compared and agree well with thermogravimetric analysis (TGA) experiments. A strong Arrhenius-type temperature dependence exists. In addition, the secondary dependencies of pressure and gas velocity are defined. As a result, a model is developed to enable extrapolation to points outside the experimental space of the burner rig, and in particular, to potential gas turbine engine conditions.
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.