Aerodynamic structure with series of shock bumps

Details Aerodynamic structure with series of shock bumps Aerodynamic structure with series of shock bumps

B - Operations, Transporting

64

C

B64C 23/04 (2006.01)

Patent

CA 2713363

An aerodynamic structure (1) comprising a series of shock bumps (3a, 3b, 3c) extending from its surface. The shock bumps are distributed along a line (7) with a smaller mean angle of sweep than an unperturbed shock (4) which would form adjacent to the surface during transonic movement of the structure in the absence of the shock bumps. Instead of being distributed along the line of the unperturbed shock, the shock bumps are distributed along a line which is less swept than the mean angle of sweep of the unperturbed shock. When the structure is moved at a transonic speed; a shock forms adjacent to its surface and the shock bumps perturb the shock (9) so as to reduce its angle of sweep.

La présente invention concerne une structure aérodynamique comportant à sa surface une série de bosses antichocs. Les bosses antichocs sont réparties sur une ligne avec un angle de flèche moyen plus petit que celui d'un choc non perturbé qui se formerait de manière adjacente à la surface au cours d'un mouvement transsonique de la structure en l'absence des bosses antichocs. Au lieu d'être réparties sur la ligne du choc non perturbé, les bosses antichocs sont réparties sur une ligne qui est moins en flèche que l'angle de flèche moyen du choc non perturbé. Lorsque la structure est déplacée à une vitesse transsonique, un choc se forme de manière adjacente à sa surface et les bosses antichocs perturbent le choc de manière à réduire son angle de flèche.

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