FRICTION DRAG REDUCIION II (MATERIALS FOR)

Authors

  • Francisco Galvao

Keywords:

Aerodynamics, Structures, Materials, Design

Abstract

This paper considers that aerospace vehicle friction drag reductions could result from the use of extemal surface covering having atomic level smoothness, obtained by crystal growth processes. The dynamics of the gas-solid surface interactions, the adsorption phenomena and the effects of the substrata atomic structure on adsorption forces are discussed in order to identify the most adequate material for such an application. It is concluded that some heavy transition metal halides and dichalcogenides, with "Van de Waals" layered crystalline structures, represent an adequate starting point for further research.

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Issue

Vol. 16 No. 3 (1992)

Section

Articles

License

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