GAS TURBINE ENGINE FAN CHANNEL Russian patent published in 2012 - IPC F02K3/04 

FIELD: engines and pumps.

SUBSTANCE: gas turbine engine fan channel comprises inner and outer cylindrical coaxially arranged walls. One end of said walls is attached to gas turbine engine intermediate crankcase while opposite end is attached to rear crankcase. Inner cylindrical wall is made up of detachable panels. The latter are arranged on carcass and secured thereto. Said carcass comprises front annular structure, rear annular structure and lengthwise elements to joint said structures together. Outer cylindrical wall comprises openings stopped by detachable panels secured on single fastening structure. Said openings feature sizes that allow passage for inner wall panels as well as their mounting on and dismantling from inner wall carcass. Invention covers also gas turbine engine comprising above described gas turbine engine channel. In mounting said channel, inner wall front annular structure is secured on intermediate crankcase flange. Then, rear annular structure is secured on rear crankcase flange for both structures to be interconnected by lengthwise fasteners. Produced single outer wall structure is installed. Front end of the latter is secured on intermediate crankcase annular flange. Ring with tie rod for connection with rear crankcase is fitted in place and secured therein. Inner wall panels are mounted and secured. Now, outer wall panels are fitted in place and secured therein.

EFFECT: simplified mounting and dismantling.

14 cl, 10 dwg