Sökning: "Ultra-short nacelles"

Hittade 2 avhandlingar innehållade orden Ultra-short nacelles.

1. 1. Aerodynamic Design and Experimental Investigation of Short Nacelles for Future Turbofan Engines

   Författare :Vinícius Tavares Silva; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ultra-high-bypass turbofan; Computational Fluid Dynamics; powered nacelle.; Ultra-short nacelles; experimental; thrust-and-drag bookkeeping;

   Sammanfattning : To achieve a higher propulsive efficiency, and hence reduced fuel burn and emissions, the next generation turbofan engines are expected to have higher bypass ratios and lower fan pressure ratios. However, the larger the bypass ratio, the larger becomes the fan and thus the nacelle. The result is an undesired increase in weight and nacelle drag. LÄS MER

3. 2. Aerodynamic Aspects of Propulsion Integration for Next-generation Commercial Aircraft

   Författare :Vinícius Tavares Silva; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Propulsion integration; Ultra-high-bypass-ratio engines; Low-speed testing.; Aerodynamics; Computational Fluid Dynamics; Ultra-short nacelles over-wing nacelle;

   Sammanfattning : Propulsion integration is one of the most challenging aspects of aircraft design. It requires a multidisciplinary approach involving aerodynamics, propulsion, structures, weight, noise, and control systems. LÄS MER