Large-scale Wind-tunnel Investigation of a Ducted-fan -- Deflected-slipstream Model with an Auxiliary Wing PDF Download

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Large-scale Wind-tunnel Investigation of a Ducted-fan -- Deflected-slipstream Model with an Auxiliary Wing

Large-scale Wind-tunnel Investigation of a Ducted-fan -- Deflected-slipstream Model with an Auxiliary Wing PDF Author: Michael D. Falarski
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 60

Book Description
The longitudinal aerodynamic characteristics of a semispan wing dellected-slipstream configuration with a double-slotted flap and and auxiliary wing were determined. The model was powered by two low-pressure-ratio ducted fans. A comparison of static test results with results obtained from various propeller-driven configurations indicates that the turning effectiveness of fan-powered deflected-slipstream configurations can be correlated with propeller-powered configurations with the same flap-chord to slipstream-diameter ratio. The turning effectiveness of the auxiliary wing was essentially the same as would be produced by a conventional slotted flap system with the same flap-chord to slipstream-diameter ratio. The auxiliary wing reduced the thrust required at low speeds as would be expected due to the increase in lifting surface area.
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