National Aeronautics and

 Space Administration

Dryden Flight Research Center

P.O. Box 273

Edwards, CA 93523-0273
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National Aeronautics and Space Administration

NASA History Office

Washington, D.C.

2011

Christian Gelzer

Fairing Well

Aerodynamic Truck Research at NASA’s Dryden 

Flight Research Center

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Table of Contents

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Chapter One 

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1

 One only has to look at the agency’s publication 6SLQRII or the list of patents held by the agency to grasp the extent to which this is true.

2

 The NACA was founded in 1915 in response to lagging performance in the American aeronautics !eld when compared to European 

advancements. Despite the Wright brothers having been the !rst to "y, Europeans soon eclipsed Americans in the !eld, a reality driven 

starkly home by the events of World War I. The agency was transformed into NASA in 1958, in direct response to the successful Soviet 

launches of Sputnik I and II.

3

 This bluntness is not restricted to the aft end of such vehicles. It appeared on the trailing edge of the ailerons and "aps of the X-2, for 

instance. The blunt trailing edges permit gradual sloping on the aft portion of these surfaces, which was bene!cial at supersonic speeds 

since it improved control effectiveness. 
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13 This may well be the !rst time that the tractor and trailer were conceived as integral objects strictly for aerodynamic purposes. Prior to 

this, the work of Dryden engineers had been focused exclusively on the tractor; truck manufactures were no different. Earlier efforts to 

meld tractor and trailer into seamless units were made for aesthetic rather than genuine aerodynamic purposes, since the trucks did not 

move fast enough to bene!t from the modi!ed shapes.

14 “Low-drag ground vehicle particularly suited for use in safely transporting livestock.” United States Patent 4,343,506 to Edwin J. 

Saltzman, 10 August 1982. 
48
49

Chapter Eight

Laws Change; 

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67

Chapter Eleven

The Social Construction

of a Technology

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Appendices
 Appendices

Appendix A

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Appendix B

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162
National Aeronautics and

 Space Administration

Dryden Flight Research Center

P.O. Box 273

Edwards, CA 93523-0273