Journal Article10.2514/1.C033334
Multi-Element Winglets: Multi-Objective Optimization of Aerodynamic Shapes
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TL;DR: In this paper, the wing tip device was designed to mimic the wing tips of a soaring bird, featuring three smoothly blended elements, and each such element was integrated into a complete wing-tail-body aircraft configuration.
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Abstract: The wing tip device in this study was to mimic the wing tips of a soaring bird, featuring three smoothly blended elements. Each such multi-element winglet was integrated into a complete wing–tail–body aircraft configuration. The geometry of each of the three elements in the multi-element winglet was defined using 11 parameters, totaling 33 parameters for a complete multi-element winglet geometry. This design methodology used a three-dimensional geometry generation algorithm based on locally analytical smoothly connected surface patches, allowing for the creation of vastly diverse three-dimensional geometries with a minimal number of specified design parameters. A three-dimensional, compressible, turbulent flow, steady-state analysis was performed using a Reynolds-averaged Navier–Stokes solver on each configuration to obtain the objective function values. Each configuration was analyzed at a freestream Mach number of 0.25 and at an angle of attack of 11 deg to mimic the takeoff conditions of a passenger ai...
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Citations
•Book
Aerodynamics of V/STOL flight
Barnes W. McCormick
- 01 Aug 1967
TL;DR: Aerodynamics of V/STOL flight as discussed by the authors, Aerodynamic of V and STOL flight, aircraft propulsion, propulsion, and propulsion, V2V flight, and V2StOL flight.
228
Efficient accelerators for PSO in an inverse design of multi-element airfoils
TL;DR: In this article, efficient accelerators are integrated to PSO and applied to an inverse design of multi-element airfoils and demonstrated that remarkable reductions in computational times have been accomplished.
34
Controlling Sonic Boom Loudness Through Outer Mold Line Modification: A Sensitivity Study
Forrest L. Carpenter,Paul G. A. Cizmas,Sohail R. Reddy,George S. Dulikravich +3 more
- 07 Jan 2019
TL;DR: A sensitivity and uncertainty analysis of the under-track loudness for a low-boom concept aircraft that has been modified to include small-scale surface deformations placed along the centerline of the aircraft’s underside found that the aircraft was relatively insensitive to bumps with a height less than 2 cm, and most sensitive to bumped with heights equal to or greater than 3 cm.
18
Investigation of Aerodynamic Characteristics of a Wing Model With RGV Winglet
TL;DR: In this article, the aerodynamic characteristics of an aircraft wing model with a Ruppell's griffon vulture (RGV)-type winglet were analyzed using ANSYS 15.0.
References
•Journal Article
Simulated Binary Crossover for Continuous Search Space.
TL;DR: A real-coded crossover operator is developed whose search power is similar to that of the single-point crossover used in binary-coded GAs, and SBX is found to be particularly useful in problems having mult ip le optimal solutions with a narrow global basin where the lower and upper bo unds of the global optimum are not known a priori.
3.3K
Aerodynamics of v/stol flight
McCormick
- 01 Jan 1967
TL;DR: In this article, a set of notes collected over the years in connection with a helicopter aerodynamics course, integrates the field of V/STOL aerodynamics into a discourse on helicopters.
286
•Book
Aerodynamics of V/STOL flight
Barnes W. McCormick
- 01 Aug 1967
TL;DR: Aerodynamics of V/STOL flight as discussed by the authors, Aerodynamic of V and STOL flight, aircraft propulsion, propulsion, and propulsion, V2V flight, and V2StOL flight.
228