FIELD: lubricating materials used for lubricating the heavily loaded helicopter rotor hubs and transmissions.
SUBSTANCE: proposed lubricating composition contains the following components, mass-%: low-viscosity oil, 10-30; commercial sulfur, 0.5-2.0; the remainder being residual oil. Residual oil of naphthenic oil has viscosity of 30-60 mm2/s at 100C and congelation point not above 0C; oil-viscosity oil of naphthelic oil has viscosity of 2.2-3.5 mm2/s at 100C and congelation point below or equal to minus 60C. Lubricating composition contains anti-wear additive -aryl phosphate at concentration up to 5 mass-%.
EFFECT: improved serviceability; improved anti-wear characteristics and viscosity and temperature parameters.
2 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| TRANSMISSION OIL | 2019 |
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| LUBRICANT COMPOSITION FOR AVIATION POWER INSTALLATIONS | 2008 |
|
RU2387703C2 |
| LOW-FREEZABLE OIL FOR FEATHERING HINGES OF HELICOPTER ROTORS | 1994 |
|
RU2100424C1 |
