scholarly journals Optimum aerofoil parameterization for aerodynamic design

2009 ◽  
Author(s):  
R. W. Derksen ◽  
T. Rogalsky
Keyword(s):  
Aerodynamic Design

AERODYNAMIC DESIGN OF A LOCOMOTIVE NOSE FAIRING

2017 ◽  
Author(s):  
Chad L. Stucki ◽  
R. Daniel Maynes
Keyword(s):  
Aerodynamic Design

Optimal Aerodynamic Design of Multi-Flapping Wing Vehicles with Morphing Capabilities

2021 ◽  
Author(s):  
Ethan J. Billingsley ◽  
Mehdi Ghommem ◽  
Rui Vasconcellos ◽  
Abdessattar Abdelkefi
Keyword(s):  
Flapping Wing ◽  
Aerodynamic Design

C209 AERODYNAMIC DESIGN AND DEVELOPMENT OF STEEL 48/40INCH STEAM TURBINE LP END BUCKET SERIES

2003 ◽  
Vol 2003.2 (0) ◽  
pp. _2-217_-_2-222_ ◽  
Author(s):  
Douglas Hofer ◽  
Jonathon Slepski ◽  
Tadashi Tanuma ◽  
Tohru Shibagaki ◽  
Naoki Shibukawa ◽  
...  
Keyword(s):  
Steam Turbine ◽  
Aerodynamic Design ◽  
Design And Development

scholarly journals Numerical Investigation of an Optimized Rotor Head Fairing for the RACER Compound Helicopter in Cruise Flight

Aerospace ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 66
Author(s):  
Patrick Pölzlbauer ◽  
Andreas Kümmel ◽  
Damien Desvigne ◽  
Christian Breitsamter
Keyword(s):  
Drag Reduction ◽  
Design Optimization ◽  
Cost Effective ◽  
Aerodynamic Design ◽  
Ansys Fluent ◽  
Aerodynamic Design Optimization ◽  
Flow Phenomena ◽  
Compound Helicopter ◽  
Rotor Head ◽  
Cruise Flight

The present work is part of the Clean Sky 2 project Full-Fairing Rotor Head Aerodynamic Design Optimization (FURADO), which deals with the aerodynamic design optimization of a full-fairing rotor head for the Rapid And Cost-Effective Rotorcraft (RACER) compound helicopter. The rotor head is a major drag source and previous investigations have revealed that the application of rotor head fairings can be an effective drag reduction measure. As part of the full-fairing concept, a new blade-sleeve fairing was aerodynamically optimized for cruise flight. Within this publication, the newly developed blade-sleeve fairing is put to test on an isolated, five-bladed rotor head and compared to an already existing reference blade-sleeve fairing, which was developed at Airbus Helicopters. Numerical flow simulations are performed with ANSYS Fluent 2019 R2 considering a rotating rotor head with cyclic pitch movement. The aerodynamic forces of the isolated rotor head are analyzed to determine the performance benefit of the newly developed blade-sleeve fairing. A drag reduction of 4.7% and a lift increase of 20% are obtained in comparison to the Airbus Helicopters reference configuration. Furthermore, selected surface and flow field quantities are presented to give an overview on the occurring flow phenomena.

scholarly journals CFD Study of Nozzle Configurations for Ultra High Bypass Engines

1993 ◽  
Author(s):  
H. Zimmermann ◽  
R. Gumucio ◽  
K. Katheder ◽  
A. Jula
Keyword(s):  
Engine Performance ◽  
Operating Conditions ◽  
Aerodynamic Design ◽  
Thrust Coefficient ◽  
Optimum Range ◽  
Installation Effects ◽  
Wide Range ◽  
And Performance ◽  
Aircraft Aerodynamics ◽  
Bypass Ratio

Performance and aerodynamic aspects of ultra-high bypass ratio ducted engines have been investigated with an emphasis on nozzle aerodynamics. The interference with aircraft aerodynamics could not be covered. Numerical methods were used for aerodynamic investigations of geometrically different aft end configurations for bypass ratios between 12 and 18, this is the optimum range for long missions which will be important for future civil engine applications. Results are presented for a wide range of operating conditions and effects on engine performance are discussed. The limitations for higher bypass ratios than 12 to 18 do not come from nozzle aerodynamics but from installation effects. It is shown that using CFD and performance calculations an improved aerodynamic design can be achieved. Based on existing correlations, for thrust and mass-flow, or using aerodynamic tailoring by CFD and including performance investigations, it is possible to increase the thrust coefficient up to 1%.

scholarly journals Double-stage Metamodel and Its Application in Aerodynamic Design Optimization

2011 ◽  
Vol 24 (5) ◽  
pp. 568-576 ◽  
Author(s):  
Dehu ZHANG ◽  
Zhenghong GAO ◽  
Likeng HUANG ◽  
Mingliang WANG
Keyword(s):  
Design Optimization ◽  
Aerodynamic Design ◽  
Aerodynamic Design Optimization
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