Busemann-sears-haack hybrid geometries applied toward supersonic commercial vehicles for improved wave drag performance

Authors
Sklar, Andrew Wallace
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Other Contributors
Hicken, Jason
Sahni, Onkar
Rusak, Zvi
Issue Date
2019-05
Keywords
Aeronautical engineering
Degree
MS
Terms of Use
Attribution-NonCommercial-NoDerivs 3.0 United States
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute (RPI), Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
In this thesis, I have presented a new configuration for supersonic aircraft fuselages. I first demonstrated that the commercial Fluent code provides mesh converged, valid results for supersonic flows around various configurations with respect to classical theoretical predictions. Then, by adapting the geometry of the Busemann biplane to the Sears-Haack body, I have presented a physically feasible configuration that reduces the wave drag per volume of given fuselage volume and length. The reduction is about 50% when compared to the Sears-Haack body that is the accepted, optimal shape for the minimum wave drag of a given volume and length. When applied to non-enclosed geometries, the Busemann biplane experiences none of the wave drag spikes that have been associated with the biplane in prior studies, while maintaining some of its efficacy. Preliminary studies into the effects of viscosity for supersonic flows at high Reynolds numbers show that the total drag is about 25% greater than inviscid flow results. This effect has also been extended to a triple body configuration, which further cuts the drag per volume to less than 40% of the equivalent S-H body.
Description
2019 May
School of Engineering
Department
Dept. of Mechanical, Aerospace, and Nuclear Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
Access
CC BY-NC-ND. Users may download and share copies with attribution in accordance with a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 license. No commercial use or derivatives are permitted without the explicit approval of the author.