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Lohmann, D. (1990) Calculation and Comparison of Aerodynamic Coefficients of a 4-Bladed Tilt Rotor at Cruise and Hover Design Points (EUROFAR). DLR-Interner Bericht. 129-90/02. 68 S.
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Abstract
The numerical investigations have been made to compare results of the Lifting Body Surface-Method (LBS-Method) with those of other methods. The results were presented on the EUROFAR Rotor Aerodynamics Meeting at MBB, Ottobrunn, 6 December 1989. Basic equation of the LBS-Method is a linearized integro-diffential equation well known a Ffowcs Williams/Hawkings equation. The solution is obtained by a velocity and an acceleration potential. The LBS-Method was developed for wings, propellers and rotors in subsonic flow. In order to include viscous effects a transpiration model can be used. However, here experimental 2-D airfoil characteristics are considered. It is shown that a modification of the LBS-Code is necessary for the efficiency that has to be replaced by the "Figure of Merit".Computed and compared are aerodynamic coefficients of a 4-bladed rotor at cruise and hover design points.
| Item URL in elib: | https://elib.dlr.de/35869/ | ||||||
|---|---|---|---|---|---|---|---|
| Document Type: | Monograph (DLR-Interner Bericht) | ||||||
| Additional Information: | LIDO-Berichtsjahr=1990, note=LSEG; 200, | ||||||
| Title: | Calculation and Comparison of Aerodynamic Coefficients of a 4-Bladed Tilt Rotor at Cruise and Hover Design Points (EUROFAR). | ||||||
| Authors: |
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| Date: | 1990 | ||||||
| Open Access: | No | ||||||
| Gold Open Access: | No | ||||||
| In SCOPUS: | No | ||||||
| In ISI Web of Science: | No | ||||||
| Number of Pages: | 68 | ||||||
| Status: | Published | ||||||
| Keywords: | Rotor-Aerodynamics, Acceleration Potential, Lifting Surface Method, T ilt Rotor | ||||||
| HGF - Research field: | UNSPECIFIED | ||||||
| HGF - Program: | other | ||||||
| HGF - Program Themes: | other | ||||||
| DLR - Research area: | UNSPECIFIED | ||||||
| DLR - Program: | no assignment | ||||||
| DLR - Research theme (Project): | L - The Innovative Rotorcraft (old) | ||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | ||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik | ||||||
| Deposited By: | DLR-Beauftragter, elib | ||||||
| Deposited On: | 03 Apr 2006 | ||||||
| Last Modified: | 27 Apr 2009 10:04 |
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