| 摘要 |
A bleed valve control system (143; 243) for mounting to a support structure adjacent to a fan air plenum (32; 132; 232) within an aircraft includes a bleed valve module (144; 244), a pneumatic valve controller (146; 270), and a fan air duct (272). The bleed valve module includes a pipe (152; 252), a plurality of bleed valves (156a-156c; 256a-256c) connected to the pipe, and a plurality of pneumatic actuators (158a-158c; 258a-258c) connected to the bleed valves. The pneumatic valve controller includes a plurality of electrical control elements (162a-162c, 164a-164c; 262a-262c, 264a-264c, 274a-274c) and a cooling shroud (276). The cooling shroud is attached to the pipe and at least partially surrounds the plurality of electrical control elements. The fan air duct (272) connects the cooling shroud (276) to the fan air plenum (32; 132; 232) such that fan air flows through the cooling shroud to cool the plurality of electrical control elements. |
