Applications of Circulation Control Technologies by Joslin, Ronald D.; Jones, Gregory S.(eds.)

By Joslin, Ronald D.; Jones, Gregory S.(eds.)

In accordance with papers from the 2004 NASA/ONR stream keep watch over Workshop, this assortment is a useful, exceptional source at the state of the art in flow keep watch over applied sciences and functions. Filling the knowledge hole among 1986, while the final such symposium was once held, and at the present time, it summarizes the functions, experiments, computations and theories relating to stream keep watch over, emphasizing basic physics, platforms research and utilized examine. The papers awarded hide a wide selection of aerodynamic and hydrodynamic functions together with; naval automobiles, fixed-wing aviation, V/STOL systems, propulsion platforms, and flooring vehicles.
- facts and data showing during this booklet are for informational reasons merely. AIAA and the writer are usually not answerable for any damage or harm as a result of use or reliance, nor do AIAA and the writer warrant that use or reliance might be loose from privately owned rights.

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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. MULREWEHT MECHANICAL ~ W F T AIRFOILS NDWVHG-PART CCWlsUPERCRlTlcAL AIRFOIL Fig. 21 CCW/Supercritical, dual-radius CCW, and conventional mechanical flap airfoil comparisons. 42 R. J. ENGLAR Fig. 22 Low-speed drag polars for CCW/Supercritical airfoil. LIVE GRAPH Freedream Mach Amber, Iy, Click here to view Fig. ' OVERVIEW OF CC PNEUMATIC AERODYNAMICS 43 Supercritical Contour Fig.

The model is 18411. 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.

Cc slot area Slot flow 1 t r3 I Internal air Rotor Drive rotor drive torque Fig. 11 Conceptual schematic of TIPJET rotational rate equilibrium. INVESTIGATIONS OF CC TECHNOLOGY AT NSWCCD 79 d a, a, Q v) LIVE GRAPH Click here to view Blade Root Pressure Ratio, PR ,oo, Fig. 12 TIF'JET rotor characteristics when self-driven via tip-jet nozzles? IV. Annular Wing (CC-Duct) In the mid-1990s the performance characteristics of an annular wing, having both inner and outer trailing edge circulation control slots, were explored.

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