File:Wing-embedded, cross-flow-fan, vertical takeoff and landing air vehicle (IA wingembeddedcros1094549464).pdf
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Summary[edit]
Wing-embedded, cross-flow-fan, vertical takeoff and landing air vehicle
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| Author |
Fulton, Jeremiah J. |
| Title |
Wing-embedded, cross-flow-fan, vertical takeoff and landing air vehicle |
| Publisher |
Monterey, California: Naval Postgraduate School |
| Description |
This research demonstrated that a vertical takeoff and landing aircraft capable of transitioning to conventional flight using cross-flow fans is possible. In particular, the design and manufacture of a wing-embedded cross-flow fan airfoil, and its implementation into an aircraft, was conducted. The design was developed based on the Gottingen 570 airfoil and generated lift coefficients of four--greater than the sum of the parts--due to the fundamental coupling between the wing and cross-flow fan. The wing was characterized with Ansys' CFX solver over tip-speed ratios of zero (hover) to infinity (glide), and predicted a hover angle of 36¼ with 56% of the lift coming from the airfoil. This meant that a full 90¼ rotation was not required to go from hover to forward flight; additionally, even while hovering, more than half of the lift was generated by the airfoil. The airfoil was manufactured from pre-impregnated carbon fiber using a mold produced by 3D printing. Printer filament selection was based on glass transition temperature and printability. ABS filament was chosen due to its high temperature resistance and relative ease of 3D printing. The aircraft was configured with all the wing assemblies facing the same direction to favor faster forward flight. This differed from previous designs, which used symmetry to increase stability. Controlled untethered flight was successful. Subjects: heavy lifting aircraft; air vehicle; propulsive wing; wing embedded; cross-flow fan (CFF); vertical takeoff and landing (VTOL); horizontal takeoff and landing; 3D print mold; additive material manufacture; prepreg carbon fiber layup; pre-impregnated; controller stabilized |
| Language | English |
| Publication date | June 2016 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
wingembeddedcros1094549464 |
| Source | |
| Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 01:13, 26 July 2020 |  | 1,275 × 1,650, 110 pages (9.02 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection wingembeddedcros1094549464 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #32447) |
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