[1] E. T. Whittaker and G. N. Watson, Modern Analysis, Cambridge Univ. Press, London, 1927, ch. 22. [2] R. Fricke, Die elliptische Funktionen, vol. 2, Leipzig, 1922, p. 293. [3] G. Holzmiiller, Einfiihrung in die Theorie der isogonalen Verwandtschaften und der conformen Abbildung, Teubner, Leipzig, 1882, pp. 256-258. [4] H. J. Stewart, The lift of a delta wing at supersonic speeds, Quart. Appl....

The synthesis of a comprehensive theory of force production in insect flight is hindered in part by the lack of precise knowledge of unsteady forces produced by wings. Data are especially sparse in the intermediate Reynolds number regime (10<Re<1000) appropriate for the flight of small insects. This paper attempts to fill this deficit by quantifying the time-dependence of aerodynamic forces for...

During the past few years, Micro-ElectroMechanical-Systems (MEMS) has emerged as a major enabling technology across the engineering disciplines. In this study, the possibility of applying MEMS to the aerodynamic field was explored. We have demonstrated that microtransducers can be used to control the motion of a delta wing in a wind tunnel and can even maneuver a scaled aircraft in flight tests...

The state-space representation of an aerodynamic vortex lattice model is considered from a classical, system identiŽ cation perspective. By the use of an aerodynamic vortex model as a numerical simulator of a wind-tunnel experiment, both full-state and limited-state data or measurements are considered. Two possible approaches for system identiŽ cation are presented, and modal controllability an...

A 86-year-old fully bedridden woman with dementia and chronic kidney disease presented with extensive, grey-yellowish hyperkeratotic plaques located on the palms, axillae, chest, and face that had occurred 3 months ago (Fig. 1). Moreover, a generalized rash with thickening of the skin and intense pruritus was present. Dematoscopy revealed several dense triangles suspicious for scabies mites hea...

The development of Doppler global velocimetry is described from its inception to its use as a flow diagnostics tool. Its evolution is traced from an elementary one-component laboratory prototype, to a full three-component configuration operating in a wind tunnel at focal distances exceeding 15 m. As part of the developmental process, several wind tunnel flow field investigations were conducted....