I. Etsion et K. Gommed, IMPROVED DESIGN WITH NONCYLINDRICAL PROFILES OF GAS-LUBRICATED RINGLESS PISTONS, Journal of tribology, 117(1), 1995, pp. 143-147
This paper describes the results of a search for an optimum profile th
at will maximize the dynamic stability of gas lubricated ringless pist
ons. Previous work indicated that the common cylindrical piston design
is not the best choice for this purpose. Many noncylindrical profiles
were investigated for ringless pistons used in helium gas cryocoolers
. An improved design was found that considerably extends the range of
stable operation of these systems.