File:Development of improved design and 3D printing manufacture of cross-flow fan rotor (IA developmentofimp1094549411).pdf
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Summary[edit]
Development of improved design and 3D printing manufacture of cross-flow fan rotor
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| Author |
Waterman, Timothy J. |
| Title |
Development of improved design and 3D printing manufacture of cross-flow fan rotor |
| Publisher |
Monterey, California: Naval Postgraduate School |
| Description |
This study determined the optimum blade stagger angle for a cross-flow fan rotor and evaluated the performance of a 3D printed rotor. Using ANSYS-CFX and SolidWorks, the cross-flow fan was modeled computationally and tested at 8,000 rpm. A parametric study determined optimum blade stagger angle using thrust, power, and thrust-to-power ratio as desired output variables. A MarkForged Mark One 3D printer was used to print components of a carbon-fiber composite cross-flow fan rotor. These pieces were assembled and the thrust, power, and thrust-to-power ratio of the 3D printed rotor were measured. These performance characteristics were compared to a rotor of the same geometry previously manufactured from traditional carbon fiber components. The optimum stagger angle for the current 26-bladed, 101.6 mm (4 inch) diameter rotor was determined to be 10¡ forward of its previous position. The 3D printed rotor was found to produce less thrust, but also required less power. This was thought to be caused by the outward deflection of the rotor blades due to centripetal force in conjunction with the surface roughness of the blades. The rotor did have a similar thrust-to-power ratio as the current cross-flow fan rotor at speeds of up to 8,000 rpm. Subjects: cross-flow fan; vertical take-off and landing; 3D printing; computational fluid dynamics; VTOL; CFD |
| Language | English |
| Publication date | June 2016 |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
| Accession number |
developmentofimp1094549411 |
| 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 | 09:31, 17 July 2020 |  | 1,275 × 1,650, 78 pages (1.9 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection developmentofimp1094549411 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #13816) |
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