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Aerodynamic Validation of Emerging Projectile Configurations

Approved for public release; distribution is unlimited. / Ever-increasing demands for accuracy and range in modern warfare have expedited the optimization of projectile design. The crux of projectile design lies in the understanding of its aerodynamic properties early in the design phase. This research first investigated the aerodynamic properties of a standard M549, 155mm projectile. The transonic speed region was the focus of the research as significant aerodynamic variation occurs within this particular region. Aerodynamic data from wind tunnel and range testing was benchmarked against modern aerodynamic prediction programs like ANSYS CFX and Aero-Prediction 09 (AP09). Next, a comparison was made between two types of angle of attack generation methods in ANSYS CFX. The research then focused on controlled tilting of the projectile’s nose to investigate the resulting aerodynamic effects. ANSYS CFX was found to provide better agreement with the experimental data than AP09.

Identiferoai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/14852
Date01 November 2012
CreatorsSor, Wei Lun
ContributorsPlatzer, Maximilian F., Gannon, Anthony J., Dec-11, Mechanical Engineering and Aerospace Engineering
PublisherMonterey, California. Naval Postgraduate School
Source SetsNaval Postgraduate School
Languageen_US
Detected LanguageEnglish
TypeThesis
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted.

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