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An Automated Approach to Nacelle Parameterization Using Intuitive Class Shape Transformation Curves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A tool to create parametric aerodynamic shapes using intuitive design variables based on class shape transformation (CST) curves is presented. To enable this, a system has been developed which accepts arbitrary constraints ...
The Effect of Streamtube Contraction on the Characteristics of a Streamwise Vortex
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The ingestion of a vortex by an aeroengine is potentially an area of concern for current and future aircraftengine configurations. However, there are very little experimental data on the characteristics of a streamwise ...
Effect of Unsteady Fan-Intake Interaction on Short Intake Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The next generation of ultrahigh bypass ratio civil aero-engines promises notable engine cycle benefits. However, these benefits can be significantly eroded by a possible increase in nacelle weight and drag due to the ...
Evaluation of Extreme Value Predictions for Unsteady Flow Distortion of Aero-Engine Intakes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Unsteady flow distortion is of interest for the development of air-breathing propulsion systems. Stochastic fluctuations can generate incompatibilities between intakes and aero-engines. Observing the extreme flow distortion ...
Aerodynamic Design of Separate Jet Exhausts for Future Civil Aero engines—Part I: Parametric Geometry Definition and Computational Fluid Dynamics Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the development of an integrated approach which targets the aerodynamic design of separatejet exhaust systems for future gasturbine aeroengines. The proposed framework comprises a series of fundamental ...
Aerodynamic Design of Separate Jet Exhausts for Future Civil Aero engines—Part II: Design Space Exploration, Surrogate Modeling, and Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aerodynamic performance of the bypass exhaust system is key to the success of future civil turbofan engines. This is due to current design trends in civil aviation dictating continuous improvement in propulsive efficiency ...
Impact of Installation on the Performance of an Aero-Engine Exhaust at Wind-Milling Flow Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a numerical investigation of the effect of wing integration on the aerodynamic behavior of a typical large civil aero-engine exhaust system at wind-milling flow conditions. The work is based on the dual ...
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