Thirty trials of each of three roughness conditions were examined. The first condition consisted of a baseball pitched so that two of the roughness elements opposed the flow. The second condition consisted of a pitched baseball with four of the roughness elements opposing the flow. The third consisted of a pitched uniformly rough sphere. The conclusions were that roughness elements increase horizontal flight deviations when a baseball rotates about a vertical axis; roughness elements on the surface of a baseball may cause a decrease in the encountered drag forces; linear velocity has a dominating effect on the trajectory of a spinning baseball; previously developed mathematical models do not adequately predict flight deviations.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc504103 |
| Date | 12 1900 |
| Creators | Smith, Michael A. (Michael Albert) |
| Contributors | McIntyre, Donald R., Swigger, Kathleen M. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | vi, 87 leaves: ill., Text |
| Rights | Public, Smith, Michael A. (Michael Albert), Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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