This paper presents an overview of the current state-of-the-art regarding slender wings with sharp leading edges; i.e., wings characterized by the presence of leading edge separation at most angles of attack. Several theoretical methods are discussed in detail and their results are compared with experimental data. Both steady and some unsteady flows are considered. No one theory adequately predicts all aspects of the flow process, and more work is needed, particularly in the fields of vortex control and unsteady flow. Nomenclature= aspect ratio = centerline chord = normal force coefficient = pressure coefficient = semispan of wing = time = freestream velocity = rectangular cartesian coordinates = nondimensional location of the center of pressure = angle of attack = circular frequency, rad/sec

A mobile and affordable, miniature wind tunnel to aid students in studying high-speed compressible flows was constructed and tested. Millimeter-sized nozzles of different contours were fabricated to produce supersonic flows at Mach 2. The complete system consists of a converging-diverging nozzle, a load cell, pressure and temperature sensors, a tank to store high-pressure gases, and a computer-aided data acquisition system. The wind tunnel system is mounted to a cart, making it convenient to move. This test facility allows students to study and test supersonic flows in a safer environment while eliminating the high costs for a full-sized facility. Gas pressure was measured at various locations in the nozzle. A load cell consisting of four cantilever beams was constructed and used to determine the thrust of the nozzle. Data collected from each nozzle was compared to numerical simulations. In all cases, the simulations were in good agreement with the experimental data.

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Over the last half century, mankind has been steadily developing technology that will allow us to venture out into the depths of space. But how far can we go before our instruments fail us? The answer is not very far at all. The outer reaches of our solar system are also the outer boundaries of our navigational instrumentation. Fortunately, there is a new breed of navigational technology which can show us the way. question we first have tO describe what "navigation" is. Navigation is our ability to discern our position in space, the direction in which we are going, and the speed with which we are travelling.Travel in space (whether by airplane or space ship) can be supported by internal and/or external navigational systems. Internal navigational systems presently function on information provided mainly by gyro-compasses and gyro-accelerometers. External systems use information provided by ground-based beacons or satellite-based "Global Positioning Systems." Because the latter is of little practical use in deep space travel (due to time-lags and complex travel trajectories), the space explorer can only rely on internal navigational systems. Of the internal systems, the gyro-compass, our most common directional How do we currently navigate? To answer that

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