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Small scale wind tunnel model investigation of hybrid high lift systems combining upper surface blowing with the internally blown flap (1974)

Chin, Y. T. ; Waites, W. L.

In: CASI

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Publication Date: 2019-06-27

Description: A small-scale wind tunnel test of a two engine hybrid model with upper surface blowing on a simulated expandable duct internally blown flap was accomplished in a two phase program. The low wing Phase I model utilized 0.126c radius Jacobs/Hurkamp flaps and 0.337c radius Coanda flaps. The high wing Phase II model was utilized for continued studies on the Jacobs/Hurkamp flap. Principal study areas included: basic data both engines operative and with an engine out, control flap utilization, horizontal tail effectiveness, spoiler effectiveness, USB nacelle deflector study and USB/IBF pressure ratio effects.

Keywords: AERODYNAMICS

Type: NASA-CR-114758 , LG74ER0070

Format: application/pdf

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