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Ducted-fan Wing Seeks VTOL, Cruise Efficiency

Posted April 15, 2016 12:00 AM by Engineering360 eNewsletter

As an alternate to the tilt-rotor, the U.S. DARPA (Defense Advanced Research Projects Agency) has Aurora Flight Sciences developing a canard configuration X-Plane that incorporates ducted fans within each wing and forward canard. The wings and canards pivot, directing thrust downward for takeoff and landing and rearward for conventional, "fast and far" flight. A turboshaft engine produces 3 MW of electrical power to drive a total of 24 ducted fans. Interesting will be the efficiency realized from the thick, cellular wing having the ducted fans between the upper and lower surfaces.


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Guru

Join Date: Apr 2010
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Re: Ducted-fan Wing Seeks VTOL, Cruise Efficiency

04/15/2016 7:17 PM

The canard configuration is more efficient because both the main wing and the canard generate positive lift in forward flight. In a standard airplane, the horizontal stabilizer is behind the main wing and generates negative lift (downward force) for pitch stability.

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