抄録
Low vapor oil or grease lubricants are useful for longer lifetime of aerospace mechanisms. Oil evaporation loss experiments are conducted with several size of annular gap to examine the effects of effusion characteristics by using high vacuum system. It is useful to design the non-contact seals, labyrinth seals which are applied to inhibit the evaporation loss of lubricants from the mechanical parts. Additionally, differences between the experimental results and calculated results from Knudsen model are discussed.
