Results 111 to 120 of about 21,879 (220)

Optimization methods applied to the aerodynamic design of helicopter rotor blades [PDF]

open access: yes
Described is a formal optimization procedure for helicopter rotor blade design which minimizes hover horsepower while assuring satisfactory forward flight performance.
Bingham, Gene J.   +2 more
core   +1 more source

Inverse boundary-layer technique for airfoil design [PDF]

open access: yes
A description is presented of a technique for the optimization of airfoil pressure distributions using an interactive inverse boundary-layer program. This program allows the user to determine quickly a near-optimum subsonic pressure distribution which ...
Henderson, M. L.
core   +1 more source

Application of numerical optimization to the design of wings with specified pressure distributions [PDF]

open access: yes
A practical procedure for the optimum design of transonic wings is demonstrated. The procedure uses an optimization program based on the method of feasible directions coupled with an aerodynamic analysis program which solves the three-dimensional ...
Haney, H. P., Johnson, R. R.
core   +1 more source

Leading-edge slat optimization for maximum airfoil lift [PDF]

open access: yes
A numerical procedure for determining the position (horizontal location, vertical location, and deflection) of a leading edge slat that maximizes the lift of multielement airfoils is presented. The structure of the flow field is calculated by iteratively
Guest, C. J.   +2 more
core   +1 more source

Transonic airfoil design for helicopter rotor applications [PDF]

open access: yes
Despite the fact that the flow over a rotor blade is strongly influenced by locally three-dimensional and unsteady effects, practical experience has always demonstrated that substantial improvements in the aerodynamic performance can be gained by ...
Hassan, Ahmed A., Jackson, B.
core   +1 more source

Methodology for sensitivity analysis, approximate analysis, and design optimization in CFD for multidisciplinary applications [PDF]

open access: yes
In this study involving advanced fluid flow codes, an incremental iterative formulation (also known as the delta or correction form) together with the well-known spatially-split approximate factorization algorithm, is presented for solving the very large
Hou, Gene W., Taylor, Arthur C., III
core   +1 more source

Robust Conceptual Design of Transonic Airfoils [PDF]

open access: yes
This paper describes an integrated, multi-fidelity analysis and heuristic design approach that can be used to derive initial airfoil designs for transonic flight.
Olson, Erik D.
core   +1 more source

Application of the ONERA model of dynamic stall [PDF]

open access: yes
A semiempirical model to predict the unsteady loads on an airfoil that is experiencing dynamic stall, is investigated. The mathematical model is described from an engineering point of view, demonstrates the procedure for obtaining various empirical ...
Lambert, O., Mcalister, K. W., Petot, D.
core   +1 more source

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