Memorial Tributes Volume 15 (2011) / Chapter Skim
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Wallace D. Hayes 1918-2001
Wallace D. Hayes 1918-2001
Pages 150-157
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From page 151... ...
ProBsTeiN Wallace deaN Hayes, an emeritus professor at Princeton University and one of the world's leading theoretical aerodynamicists, whose numerous and fundamental contributions to the theories of supersonic and hypersonic flow and wave motion strongly influenced the design of aircraft at supersonic speeds and missiles at hypersonic speeds, died on March 2, 2001, at the age of 82. Wally was born on september 4, 1918, in Beijing, china, where his father worked as a civil engineer.
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From page 152... ...
although the world-famous aerodynamicist Theodore von Karman was Wally's thesis supervisor, he had never seen his work until Wally turned in his thesis, at which point he discussed the results with him. The rules define how an airplane's cross section should be designed to minimize the drag that results from shock waves that develop locally when a plane flies at speeds below but close to the speed of sound and the shock waves that develop about the airplane above the speed of sound.
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From page 153... ...
Wally's development of Newtonian flow theory provides the starting point for almost all quantitative hypersonic flow theories. This theory employs the fact that at hypersonic speeds the shock wave enveloping the body lays close to the body surface, and in this thin layer the gas density is very high compared to the density in front of the shock.
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From page 154... ...
His general theory on the conservation of wave action applies to the broad range of studies of progressive waves and can be called foundational in the subject of wave studies. among his honors Wally was elected to the National academy of engineering in 1975.
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From page 155... ...
He was a glider pilot and smallairplane flight instructor, and he had a love for the outdoors and extreme sports, including mountaineering, ice climbing, hiking, water sports, and skiing. Unfortunately, i did not share his love for the outdoors and sports, although I did fly and ski with him.
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From page 156... ...
Having been raised in california, he loved fruit and made his own jams and jellies. His sense of wry, dry and sometimes bawdy humor was almost always in gear.
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