Cancellation zone in supersonic lifting wing theory

Numerical Aspects of Unsteady Lifting-surface Theory at Supersonic Speeds

A Momentum Analysis of Lifting Surfaces in Inviscid Supersonic Flow

Momentum considerations are used to derive relationships between the lifting efficieny of a wing having an attached shock system and properties of the flow field around it. Optimum two-dimensional flow fields are derived using shock expansion theory. These may be used to design three-dimensional shapes having slightly greater lifting efficiencies than plane wedges. An analysis of the flow in an...

Lifting Wing in Constructing Tall Buildings—Aerodynamic Testing

This paper builds on previous research by the authors which determined the global state-of-the-art of constructing tall buildings by surveying the most active specialist tall building professionals around the globe. That research identified the effect of wind on tower cranes as a highly ranked, common critical issue in tall building construction. The research reported here presents a design for...

Wing flexibility enhances load-lifting capacity in bumblebees.

The effect of wing flexibility on aerodynamic force production has emerged as a central question in insect flight research. However, physical and computational models have yielded conflicting results regarding whether wing deformations enhance or diminish flight forces. By experimentally stiffening the wings of live bumblebees, we demonstrate that wing flexibility affects aerodynamic force prod...

Multiobjective evolutionary computation for supersonic wing-shape optimization

This paper discusses the design optimization of a wing for supersonic transport (SST) using a multiple-objective genetic algorithm (MOGA). Three objective functions are used to minimize the drag for supersonic cruise, the drag for transonic cruise, and the bending moment at the wing root for supersonic cruise. The wing shape is defined by 66 design variables. A Euler flow code is used to evalua...