Shock-free Supersonic Transport Problem presented by

Problem statement Vehicle Research Corporation has proposed a mechanism for eliminating the sonic boom generated by supersonic flight. It involves a nozzle-shaped wing underside, together with an underwing planar jet of engine compressor air. The Study Group was asked to provide a critical review of the proposed mechanism and a quantitative analysis of its likely performance. Study Group contributor

Characteristics of an airfoil extending through a circular jet

A method has been derived for the determination of the downwash in the field of an airfoil extending through a circular jet. This solution has been applied particularly to the region aft of the lifting line in the plane of the airfoil, to determine the lift distribution on a wing extending through a circular jet. The method of solution is essentially based on a division of the flow induced by the jet boundary into parts which are even and odd with respect to the direction of flow. The analysis due to the even part alone is similar to previous theories, which in effect disregarded the odd part. Such previous results based on the even part alone differ considerably from the experimental values. The results based on the total of the even and odd parts show good agreement with the experiments, illustrating the necessity of including the odd part of the flow when the segment of the wing immersed in the jet is of low aspect ratio. The problem has been solved in parametric form, so that the results may be employed to determine the characteristics of any geometry wing-jet combination at any jet velocity ratio

« Conversations on Choregraphy »

International audienceThe “Conversations on Choreography” is a series of ongoing discussions of contemporary dance making with a focus on European contexts that were hold from 1999 till 2002. It did not function in the traditional format of a conference or a symposium, but was seeking innovative ways of organising contexts for dialogue and exchange. Keeping the practice of choreography close to the centre of the discussions and debates was essential to the aims of this extended discussion. Invited contributors were writers, educators, dramaturges, choreographers, performers, critics, organisers and researchers. Curated and organized by Scott DeLahunta, the core group included Isabelle Ginot, Myriam Van Imschoot, Andre Lepecki and Diana Theodores. This article is the closing step of the series, produced in a residency group project in Bellagio in 2002

« Conversations on Choregraphy »

International audienceThe “Conversations on Choreography” is a series of ongoing discussions of contemporary dance making with a focus on European contexts that were hold from 1999 till 2002. It did not function in the traditional format of a conference or a symposium, but was seeking innovative ways of organising contexts for dialogue and exchange. Keeping the practice of choreography close to the centre of the discussions and debates was essential to the aims of this extended discussion. Invited contributors were writers, educators, dramaturges, choreographers, performers, critics, organisers and researchers. Curated and organized by Scott DeLahunta, the core group included Isabelle Ginot, Myriam Van Imschoot, Andre Lepecki and Diana Theodores. This article is the closing step of the series, produced in a residency group project in Bellagio in 2002