Main generator stator sleeve for integrated drive generator

An integrated drive generator comprising:

• an input shaft connected to a gear differential, said gear differential including a carrier shaft connected to a ring gear, said ring gear connected to a main generator rotor, and said main generator rotor positioned within a main generator stator, said main generator stator including a stator assembly, and a stator sleeve, said stator sleeve having a body extending between a first end and a second end, and having a generally cylindrical inner peripheral surface and an outer peripheral surface with a plurality of circumferentially extending ribs defining intermediate oil cooling channels;
• wherein there is an end flange on said outer peripheral surface at said first end of said body, an end rib on said out peripheral surface at said second end of said body, with a plurality of laterally intermediate on said outer peripheral surface between said end flange and said end rib;
• wherein said inner peripheral surface having an inner diameter called a first distance, and an outer diameter to an outer peripheral surface of said end rib defining a second distance, and a ratio of said first distance to said second distance being greater than 0.90;
• wherein a third distance is defined between facing surfaces of said end flange and an intermediate rib most adjacent to said end flange, and a ratio of first distance to said third distance being between 25 and 30;
• wherein said end rib is spaced from a most adjacent one of said latterly intermediate ribs by a fourth distance, and a ratio of said third distance to said fourth distance is being between 0.60 and 0.70;
• wherein a fifth distance is defined between at least two of said laterally intermediate ribs and a ratio of said third distance to said fifth distance being between 1.90 and 2.10;
• and
• wherein there are 19 of said laterally intermediate ribs.