By Joslin, Ronald D.; Jones, Gregory S.(eds.)
In keeping with papers from the 2004 NASA/ONR circulate keep watch over Workshop, this assortment is a useful, exclusive source at the state of the art in movement keep watch over applied sciences and functions. Filling the knowledge hole among 1986, whilst the final such symposium used to be held, and this day, it summarizes the purposes, experiments, computations and theories on the topic of stream keep watch over, emphasizing primary physics, platforms research and utilized learn. The papers offered conceal a large choice of aerodynamic and hydrodynamic purposes together with; naval automobiles, fixed-wing aviation, V/STOL structures, propulsion platforms, and flooring vehicles.
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Here, a short-chord flap (less than 0 . 1 0 ~ pivots ) about a hinge on the lower surface and exposes a smaller-radius CCW surface downstream of the tangential slot. This radius is approximately the airfoil thickness at the slot location, less the slot height. The upper surface of this flap is a second arc of much larger radius, the radius being chosen to keep the arc close to the airfoil aft contour. As the small flap is deflected on this dual-radius CCW airfoil, the large radius produces an arced CC aft surface with a turning arc much larger than the flap deflection angle.
In diameter with a 10-in. chord and a 20% thick uncambered foil section. The inner and outer slots are located around the full trailing edge circumference at 97% chord. During the Duct investigation, metal foil tape was applied and burnished well to the external surface of the model, over the slot region, in order to temporarily block off portions of the slot. This commonly used technique for exploratory CC research provides the ability to control the distribution of slot flow. By using the tape, several configurations, focusing on potential attributes of the Duct, were tested.
Thus, a single source of air pressure provides flow for the CC slots to augment rotor lift (vertical Y Fig. 6 74 R. IMBER, E. ROGERS, AND J. ABRAMSON No drive shaft, unarticulated, flat-pitch blades NOZZLE DRIVE FORCE AIR SUPPLY Fig. 6 Sketch of TIPJETcompletely pneumatic rotor? thrust), while at the same time providing the rotor torque drive via the tip-jet nozzles. 7 The primary objective of the hover experiment was to evaluate the interactions between the lift and drive systems. Drawings of the aluminum rotor model are shown in Fig.
Applications of Circulation Control Technologies by Joslin, Ronald D.; Jones, Gregory S.(eds.)