Baseball Drag Measurements in Free Flight

While baseball is a popular sport with a storied history, the aerodynamic properties of the seamed sports ball are not fully understood. Reported aerodynamic baseball behaviors are primarily based on force measurements from wind tunnels. The following describes a methodology to measure baseball drag...

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Main Authors: Lloyd Smith, Andrea Sciacchitano
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/3/1416
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author Lloyd Smith
Andrea Sciacchitano
author_facet Lloyd Smith
Andrea Sciacchitano
author_sort Lloyd Smith
collection DOAJ
description While baseball is a popular sport with a storied history, the aerodynamic properties of the seamed sports ball are not fully understood. Reported aerodynamic baseball behaviors are primarily based on force measurements from wind tunnels. The following describes a methodology to measure baseball drag in free flight from changes in its speed. The method relies on a high accuracy ball delivery device and speed measurement system. It avoids the large infrastructure, stinger attachment and blockage effects associated with wind tunnels. In the present work, we examined the baseball drag as a function of orientation and with spin. The drag values retrieved from the proposed method are in good agreement with radar and video measurements. However, they are lower than those reported in other wind tunnel measurements, which was attributed to differences in the balls that were tested or the stinger attachment.
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spelling doaj.art-b369929d71ec4986a59d4a36fa2fd9e22023-11-23T15:57:13ZengMDPI AGApplied Sciences2076-34172022-01-01123141610.3390/app12031416Baseball Drag Measurements in Free FlightLloyd Smith0Andrea Sciacchitano1School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USADepartment of Aerodynamics, Delft University of Technology, NE 2628 Delft, The NetherlandsWhile baseball is a popular sport with a storied history, the aerodynamic properties of the seamed sports ball are not fully understood. Reported aerodynamic baseball behaviors are primarily based on force measurements from wind tunnels. The following describes a methodology to measure baseball drag in free flight from changes in its speed. The method relies on a high accuracy ball delivery device and speed measurement system. It avoids the large infrastructure, stinger attachment and blockage effects associated with wind tunnels. In the present work, we examined the baseball drag as a function of orientation and with spin. The drag values retrieved from the proposed method are in good agreement with radar and video measurements. However, they are lower than those reported in other wind tunnel measurements, which was attributed to differences in the balls that were tested or the stinger attachment.https://www.mdpi.com/2076-3417/12/3/1416baseball aerodynamicsaerodynamic drag measurementsfree-flight aerodynamics
spellingShingle Lloyd Smith
Andrea Sciacchitano
Baseball Drag Measurements in Free Flight
Applied Sciences
baseball aerodynamics
aerodynamic drag measurements
free-flight aerodynamics
title Baseball Drag Measurements in Free Flight
title_full Baseball Drag Measurements in Free Flight
title_fullStr Baseball Drag Measurements in Free Flight
title_full_unstemmed Baseball Drag Measurements in Free Flight
title_short Baseball Drag Measurements in Free Flight
title_sort baseball drag measurements in free flight
topic baseball aerodynamics
aerodynamic drag measurements
free-flight aerodynamics
url https://www.mdpi.com/2076-3417/12/3/1416
work_keys_str_mv AT lloydsmith baseballdragmeasurementsinfreeflight
AT andreasciacchitano baseballdragmeasurementsinfreeflight