Compact gearbox for ram air turbine oil management

A ram air turbine gearbox comprising:

• a housing body including a first flange defining a first plane and a second flange defining a second plane that is transverse to the first plane, the housing body extending around an axis and having a first axial end and an opposite, second axial end that are each open to an internal cavity of the housing body, the housing body including a radially-enlarged section at least partially defining an oil sump within the internal cavity of the housing body;
• at least one gear mounted within the housing body;
• and
• a cover mounted at the second axial end, the cover including an annular body extending around a central opening and between a first axial side and a second axial side, the annular body including a lip extending from the first axial side to a free tip end to define an axial lip dimension, the axial lip dimension varying with respect to circumferential position around the central axis.

A ram air turbine comprising:

• a generator section;
• a turbine section movable between a deployed position and a stowed position;
• and
• a gearbox coupled to the turbine section such that the turbine section is operable to drive the generator section through the gearbox, the gearbox including a housing body comprising a first flange defining a first plane and a second flange defining a second plane that is transverse to the first plane, the housing body extending around an axis and having a first axial end and an opposite, second axial end that are each open to an internal cavity of the housing body, the housing body including a radially-enlarged section at least partially defining an oil sump within the internal cavity of the housing body.

A method of installing a gearbox on a ram air turbine, the method comprising:

• providing a gearbox comprising a housing body including a first flange defining a first plane and a second flange defining a second plane that is transverse to the first plane, the housing body extending around an axis and having a first axial end and an opposite, second axial end that are each open to an internal cavity of the housing body, the housing body including a radially-enlarged section defining an oil sump within the internal cavity of the housing body;
• securing the housing body to a turbine section;
• and
• securing the second flange to at least one of a strut and a generator section.