Showing papers in "Progress in Aerospace Sciences in 1985"

TL;DR: In this paper, a review of the fundamental properties of the interaction between a shock wave and a boundary layer is presented, with emphasis on the physics of phenomena involved in this process.

TL;DR: In this article, the authors present a survey of recent experimental results in such situations and recent results and models are discussed, as well as several new results in various stages of publication.

TL;DR: The vortical pattern development during dynamic separation in accelerating flow around airfoils is visualized and described and the descriptive language developed for this task is presented in a ‘dictionary’ for generic use.

TL;DR: In this article, the effects of non-uniform mean flow on sound are demonstrated by comparing horns with nozzles, and 15 properties are proved and discussed, viz. relations between acoustic pressure and velocity; equipartition or biasing of kinetic and compression energies; conservation or evolution of wave action; existence of elementary or special solutions and cut-off frequencies, and amplitude and phase laws.

TL;DR: In this paper, a brief outline of the adaptive wall concept is given, followed by a detailed description of the research facilities used to explore the concept, and test sections with three-dimensional adaptive walls have been employed successfully at subsonic main stream condition.

TL;DR: In this article, the complex problems associated with the aerodynamics of blade/vortex interactions, the dynamics of a blade displaced out of its plane of rotation, and the position control of a hovering helicopter are discussed.