NDLI: Space age swimsuit reduces drag, breaks records

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Space age swimsuit reduces drag, breaks records

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	2008
Description	A space shuttle and a competitive swimmer have a lot more in common than people might realize: Among other forces, both have to contend with the slowing influence of drag. NASA s Aeronautics Research Mission Directorate focuses primarily on improving flight efficiency and generally on fluid dynamics, especially the forces of pressure and viscous drag, which are the same for bodies moving through air as for bodies moving through water. Viscous drag is the force of friction that slows down a moving object through a substance, like air or water. NASA uses wind tunnels for fluid dynamics research, studying the forces of friction in gasses and liquids. Pressure forces, according to Langley Research Center s Stephen Wilkinson, dictate the optimal shape and performance of an airplane or other aero/hydro-dynamic body. In both high-speed flight and swimming, says Wilkinson, a thin boundary layer of reduced velocity fluid surrounds the moving body; this layer is about 2 centimeters thick for a swimmer.
File Size	143430
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090002494
Archival Resource Key	ark:/13960/t2b907m10
Language	English
Publisher Date	2008-09-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Viscous Drag Pressure Drag Water Fluid Dynamics Wind Tunnels Drag Aerodynamics Garments Swimming Boundary Layers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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