Commercial Supersonic Bi-Plane Jets ?

Voir http://www.bbc.com/future/story/20120405-supersonic-jets-ready-to-take-off

The result of the trio’s work, laid out in a paper to be published in the Journal of Aircraft, is a biplane airfoil design that should enable smooth flight to supersonic cruising speed with minimal drag, and without having to first accelerate beyond the optimal design speed. The team reached its final design by running computer models of about 700 airfoil configurations and a dozen possible supersonic cruise speeds.

Read more: The Return of the Supersonic Biplane – Popular Mechanics