Abstract: An input drive shaft for use in an integrated drive generator has a body extending from an end to a clutch face. The clutch face includes a plurality of clutch teeth extending away from a nominal surface of the body. The clutch face defines an inner bore of a first diameter. The clutch face has an outer peripheral surface defining a second diameter and a ratio of the first diameter to the second diameter is between 1.50 and 1.65. An integrated drive generator and a method are also disclosed.

Abstract: An output ring gear for use in an integrated drive generator has a gear body extending between a first end and a second end and having a disc extending radially outwardly. A boss extends from the disc toward the second end. There are outer gear teeth outwardly of an outer diameter of the disc. There are inner gear teeth inwardly of an inner surface of the disc. The outer and inner gear teeth have a unique gear tooth profile with roll angles A, B, C, and D. An integrated drive generator and a method are also disclosed.

Abstract: A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.

Abstract: A governor and inversion pump drive gear for an integrated drive generator has a gear body extending from a first end to a second end. There is an enlarged disc between the first and second ends. A boss extends from the enlarged disc toward the second end and has an internal bore with spline teeth. The enlarged disc has input gear teeth at an outer periphery. A shaft portion extends from the disc to the first end. A flange is formed at a location intermediate the first end and the enlarged disc. The inner gear teeth and the drive gear teeth have unique tooth profiles. An integrated dive generator and a method are also disclosed.

Abstract: A terminal block cover for use in an integrated drive generator has a body having a closed outer face and extending to an open inner face, and having an open side and a closed side. There are four connection channels for receiving electric connections for each of three phases of power and a neutral, and they extend from the closed side to the open side. There are spacing channels formed between adjacent ones of each of the four connection channels, with the spacing channels being formed by two spaced ribs with an interior space. An integrated drive generator and a method are also disclosed.

Abstract: A cylinder block for use in an integrated drive generator has a shaft portion with a relatively small outer diameter and a cylindrical body portion having a larger outer diameter than the shaft portion, and said cylindrical body portion formed with a plurality of piston chambers, said cylindrical body portion extending from a first end to a second end, said second end being provided with cylindrical ports leading into said piston chambers and said cylindrical ports having a third end and a fourth end wherein a ratio of a first distance from said first end to said fourth end to a second distance from said first end to said second end being between 0.91 and 0.93. A generator and a method are also described.

Abstract: A seal plate body has a first the zone including three bolt hole ears and an oil passage ear. A second zone includes four bolt hole ears. A third zone includes six bolt ears and one alignment pin ear. A fourth zone has three bolt hole ears. A fifth zone includes five bolt hole ears and one oil passage ear. A sixth zone includes three bolt hole ears and one alignment pin ear. Each of the bolt hole ears includes a bolt hole, and each of the oil passage ears includes an oil passage hole. An integrated drive generator and a method are also disclosed.

Abstract: A trim ring gear for use in an integrated drive generator has a ring gear body extending between a first end and a second end. Outer gear teeth are formed on an outer surface, and inner gear teeth are formed on an inner surface. The outer tooth roll angle at A is between 16.0 and 17.5°, at B is between 17.5 and 190°, at C is between 22.0 and 23.5°, and at D is between 23.0 and 24.5°. The inner tooth roll angle at A is between 31.5 and 33.0°, at B is between 30.0 and 31.5°, at C is between 25.5 and 27.0°, and at D is between 24.0 and 25.5°. An integrated drive generator, and a method of replacing the trim ring gear are also disclosed and claimed.

Abstract: An inner bearing race has a body extending from a first end to a second end. An inner bearing race surface defined between a pair of lands extends radially outwardly of the inner bearing race surface, with one of the lands extending to the second end. The bearing race surface is defined by inner face surfaces of the lands. The inner bearing race surface extends for an axial distance between the inner facing surfaces along a central axis C of the body and defines a first distance. A second distance defines an outer diameter of the inner bearing race surface is defined as a second distance and a ratio of the first distance to the second distance being between 0.20 and 0.30. An integrated drive generator and a method are also disclosed.

Abstract: A wear ring for use in an integrated drive generator has a cylindrical body defining an axis and having a tab extending radially outwardly of an outer cylindrical surface of the cylindrical body. The tab has a radially outer point. A ratio of a first radius to the outer cylindrical surface from the axis to a second radius extending to the radially outer point from the axis is between 0.90 and 0.95. An integrated drive generator and a method are also disclosed.

Abstract: A port plate for use in an integrated drive generator has a body defining a semi-cylindrical charge port communicating with two circumferentially smaller charge port portions. A diametrically opposed working pressure port has three smaller working pressure ports. A center plane is defined extending through a center axis of a bore within the body and equidistance between circumferential ends of the charge port and the working fluid port. A first angle is defined between the plane and a circumferential end of the smaller charge port. The first angle is between 15 and 25 degrees. An integrated drive generator and a method are also disclosed.

Abstract: A cam liner for use in an integrated drive generator has a cam liner body extending between a first end spaced from the second end by a first distance. The body is generally cylindrical. An outer diameter of the cam liner defines a second distance. A ratio of the first distance to the second distance is between 0.90 and 1.00. An integrated drive generator and a method are also disclosed.

Abstract: A pump sleeve for an integrated drive generator has a pump sleeve body extending between a first end and a second end. The first end is at a location adjacent a radially enlarged end plate. The body extends to the second end with a generally cylindrical body portion having an inner bore diameter defining a first distance. The body extends between the first and second ends for a second distance. A ratio of the first distance to the second distance is between 0.15 and 0.30. An integrated drive generator and a method are also disclosed.

Abstract: A terminal lead support for use in an integrated drive generator has a body defining an outer end extending to two outer angled surfaces. The outer angled surfaces each extend to curved end portions. The curved end portions connect the outer angled surfaces into inner angled surfaces. The inner angled surfaces each extend into cupped portions formed about a radius. There are six apertures formed within the body, with laterally outer apertures spaced from the outer surface by a greater amount than laterally intermediate apertures. The laterally intermediate apertures are spaced from the outer surface by a greater amount than laterally inner apertures. An integrated drive generator and a method of replacing a terminal lead support are also disclosed.

Abstract: A fixed block shaft has a body extending from a first end to a second end. A disc extends radially outwardly of a shaft portion. The shaft portion extends to the second end. The disc extends radially outwardly from the shaft adjacent the first end with a boss extending to the first end from the disc. The boss defines an inner peripheral surface and the inner peripheral surface has a bearing race. The bearing race extends from the first end to a bearing race end. An inner diameter of the bearing race defines a first distance. An inner diameter of the bearing race is defined as a first distance and the bearing race extends along a central axis for a second distance. A ratio of the first distance to the second distance is between 4.30 and 4.50. An integrated drive generator and a method are also disclosed.

Abstract: A variable wobbler plate has a stub shaft and a pivot shaft. The pivot shaft has a smaller diameter portion and a larger diameter portion. The smaller diameter portion has a generally cylindrical outer periphery with a flat over a limited circumferential extent and a diameter to opposed portions of the generally cylindrical portion defining a first distance. A second distance is defined from an end of the smaller diameter portion spaced furthest from the stub shaft to an end of the larger diameter portion spaced closest to the stub shaft and measured along a central axis of the pivot shaft and defines a second distance. A ratio of the first distance to the second distance is between 0.60 and 0.75. An integrated drive generator and a method are also disclosed.

Abstract: A variable block shaft has a radially enlarged disc formed at a first end. A shaft portion extends from the disc to a second end. An inner bearing race surface is defined intermediate the first and second end and has an outer peripheral surface. An axial length of the inner bearing race surface is defined between inner facing surfaces of lands at each axial side. The axial distance is measured along the center axis of the body and an outer diameter to the inner bearing race surface being defined as a first distance. The axial length of the inner bearing race surface is defined as a second distance and a ratio of the first distance to the second distance being between 3.75 and 3.90. An integrated drive generator and a method are also disclosed.

Abstract: An inner bearing race has a body extending from a first end to a second end. An inner bearing race surface defined between a pair of lands extends radially outwardly of the inner bearing race surface, with one of the lands extending to the second end. The bearing race surface is defined by inner face surfaces of the lands. The inner bearing race surface extends for an axial distance between the inner facing surfaces along a central axis C of the body and defines a first distance. A second distance defines an outer diameter of the inner bearing race surface is defined as a second distance and a ratio of the first distance to the second distance being between 0.20 and 0.30. An integrated drive generator and a method are also disclosed.

Abstract: A terminal block for use in an integrated drive generator has a body having an outer support surface and extending to an inner surface. There are four connection channels for supporting electric connections for each of three phases of power and a neutral. There are fingers formed between adjacent ones of each of the four connection channels, with the fingers extending away from the support surface in a direction away from the inner surface. An integrated drive generator and a method are also disclosed.

Abstract: An input drive shaft for use in an integrated drive generator has a body extending from an end to a clutch face. The clutch face includes a plurality of clutch teeth extending away from a nominal surface of the body. The clutch face defines an inner bore of a first diameter. The clutch face has an outer peripheral surface defining a second diameter and a ratio of the first diameter to the second diameter is between 1.50 and 1.65. An integrated drive generator and a method are also disclosed.