Comparison Between Theory and Experiment for Wings at Supersonic Speeds

This paper presents a critical comparison made between experimental and theoretical results for the aerodynamic characteristics of wings at supersonic flight speeds. As a preliminary, a brief, nonmathematical review is given of the basic assumptions and general findings of supersonic wing theory in two and three dimensions. Published data from two-dimensional pressure-distribution tests are then used to illustrate the effects of fluid viscosity and to assess the accuracy of linear theory as compared with the more exact theories which are available in the two-dimensional case. Finally, an account is presented of an NACA study of the over-all force characteristics of three-dimensional wings at supersonic speed. In this study, the lift, pitching moment, and drag characteristics of several families of wings of varying plan form and section were measured in the wind tunnel and compared with values predicted by the three-dimensional linear theory. The regions of agreement and disagreement between experiment and theory are noted and discussed

The Queer Stopover: How Queer Travels in the Language Classroom

Over the last decade or so, developments in queer theory and queer perspectives have resulted in changes to the way that identities are viewed. However, the implications for foreign language classrooms are yet to be fully explored. This paper focuses on the challenges involved in introducing queer theory to the foreign language classroom. Specifically, it seeks to respond to the question How does queer travel to the French, Italian and Japanese classrooms in an Australian university? In doing so, it considers the challenges which emerge due to the structures of the languages, the sociocultural context and the teaching materials used in the classroom. It is written by experienced teachers as they considered, and in some cases trialled, how to integrate queer perspectives into their teaching. The challenges addressed here are not exhaustive, but represent those the authors consider as the most salient at the initial steps of the journe

Theoretical study of the transonic lift of a double-wedge profile with detached bow wave

A theoretical study is described of the aerodynamic characteristics at small angle of attack of a thin, double-wedge profile in the range of supersonic flight speed in which the bow wave is detached. The analysis is carried out within the framework of the transonic (nonlinear) small-disturbance theory, and the effects of angle of attack are regarded as a small perturbation on the flow previously calculated at zero angle. The mixed flow about the front half of the profile is calculated by relaxation solution of a suitably defined boundary-value problem for transonic small-disturbance equation in the hodograph plane (i.e., the Tricomi equation). The purely supersonic flow about the rear half is found by an extension of the usual numerical method of characteristics. Analytical results are also obtained, within the framework of the same theory, for the range of speed in which the bow wave is attached and the flow is completely supersonic