ADAPTER OF FUEL UNITS Russian patent published in 2024 - IPC F02C7/32 F02C7/22 

FIELD: engines.

SUBSTANCE: invention relates to engine building, namely to designs of drive boxes of drive unit (DUB) of double-flow gas turbine engines (GTE), and can be used in GTE aircraft application. Fuel unit adapter (FUA) is made in the form of mounting plate (2), including the units installation points, internal fuel channels (6-9) with inlets and outlets for supply and discharge of fuel, located in one plane, are cast in the fastening plate as a whole, at that FUA is installed on the housing of the box of drive units. Inner fuel channels are power ribs providing rigidity in longitudinal direction, and the flanges of the fuel units provide rigidity in the transverse direction, wherein the internal fuel channels with inlets and outlets for the fuel supply and removal are located in at least two planes, with possibility of combined machining of diameters of holes for bearings and seals in adapter of fuel units and housing DUB, in pairs of diameters D2 and D1, diameters D4 and D3. Besides, FUA and housing DUB are made of aluminium alloy of grade, for example, “АК5МЧ (АЛ5-1)” or “АК7пч (АЛ9-1)”.

EFFECT: invention makes it possible to compactly arrange units in two levels, increase rigidity in longitudinal and transverse directions, reduce dimensions and reduce weight of FUA, ensure alignment of holes for installation of rolling bearings, increase service life and reliability of FUA and DUB as a whole.

5 cl, 12 dwg