Patent ID: 11859546
Assignee: GENERAL ELECTRIC COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 16:
17. A gearbox for a gas turbine engine, the gearbox comprising:
a rotor rotatable about a rotational axis in a rotational direction, the rotor having a radial direction and expelling oil radially outward when the rotor rotates; and
a gutter positioned radially outward of the rotor in the radial direction of the rotor to collect oil expelled by the rotor when the rotor rotates, a radial distance from the rotational axis of the rotor to the gutter being variable in the rotational direction,
wherein the rotor has a radius (Rr),
wherein the gutter has (i) a maximum distance from the rotational axis to the gutter (Dgmax), (ii) a minimum distance from the rotational axis to the gutter (Dgmin), and (iii) an eccentricity ratio (ε) from two thousandths to seventy-six hundredths, the eccentricity ratio (ε) being the ratio of an eccentricity distance (e) to a centered clearance (C), and
wherein the eccentricity distance (e) is given by the following formula: e=(Dgmax−Dgmin)/2, and centered clearance (C) is given by the following formula: C=(Dgmax+Dgmin)/2−Rr.