Abstract
Interactive Development of Seals, Bearings, andSecondary Flow Systems with the Power Stream
Highlights
About 1952, NACA realized that rolling-element bearings would not satisfy future aerospace requirements and embarked on a foil bearing study led by W.J
The following problems have been encountered and resolved: (1) left (ADPAC)- and right-hand coordinate system transformations are required; (2) solution methods arepressure driven and density driven (ADPAC); and (3) boundary gradients between the codes have to be established by using phantom points
ADPAC is known to the industrial community and original equipment manufacturers
Summary
About 1952, NACA realized that rolling-element bearings would not satisfy future aerospace requirements and embarked on a foil bearing study led by W.J. Anderson and Z. Nemeth [1994] told of constructing a two-ring device with the attached foil forming a catenary under load. The 71-N (16-1b) shaft had to be lifted by a separate air bearing until the shaft rotation achieved 7000 rpm, where transition to the foil bearing occurred. Subsequent work by Blok and van Rossum [1953], Eshel and Elrod [1965], Licht and Branger [1973a,b], Heshmat et al [1983], Heshmat 1993], Saville et al 1991 ], Gilbrech et al 1993], Genge et al 1993], Carpino 1990], Ping and Carpino [1993], Braun et al [1994], and others have advanced foil bearings
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