FIELD: engines and pumps.
SUBSTANCE: bypass gas turbine engine is used in combination with step-down reduction gearbox to reduce fan rotation speed relative to low-pressure turbine rotation speed. Disclosed also are turbine module and method of its designing. Gas turbine engine is made so, that number of blades in low-pressure turbine, multiplied by low-pressure turbine rotation speed, leads to formation of working noise, which lies outside of human hearing sensitivity range.
EFFECT: enabling audible noise reducing during landing approach.
20 cl, 1 dwg
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|
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RU2665572C2 |
