Application of Numerical Optimization to the Design of Supercritical Airfoils without Drag-Creep Ames Research Center, NASA

Format:

Conference/Event

Author/Creator:

Hicks, Raymond M., author.

Conference Name:

National Business Aircraft Meeting and Engineering Display (1977-03-29 : Wichita, Kansas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1977

Summary:

Recent applications of numerical optimization to the design of advanced airfoils for transonic aircraft have shown that low-drag sections can be developed for a given design Mach number without an accompanying drag increase at lower Mach numbers. This is achieved by imposing a constraint on the drag coefficient at an off-design Mach number while the drag at the design Mach number is the objective function. Such a procedure doubles the computation time over that for single design-point problems, but the final result is worth the increased cost of computation. The ability to treat such multiple design-point problems by numerical optimization has been enhanced by the development of improved airfoil shape functions. Such functions permit a considerable increase in the range of profiles attainable during the optimization process

Notes:

Vendor supplied data

Publisher Number:

770440

Access Restriction:

Restricted for use by site license