| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: proposed blade comprises root including leading and trailing edges jointed by two shells, i.e. back and pressure side. Inner surface of, at least, one shell is provided with ribs jointed with second shell. Said ribs are arranged along direction of centrifugal force action on, blade root and has cross-sections varying over root height. Areas of said cross-sections are defined from conditions of equality of strains on all said cross-sections brought about by said centrifugal forces. ^ EFFECT: higher strength, decreased weight. ^ 2 cl, 4 dwg |
