hem in a commercial transport application. The 777 is the first commercial transport manufactured by Boeing which emp. oyees a FBW Primary Flight Control System. This chapter will examine …

B43540 Inboard Spoiler PCU (x4) B43542 Mechanical Spoiler PCU (x2) B43541 Outboard Spoiler PCU (x8) B79121 Elevator EHSV (x4) B94499 B79122 Rudder EHSV (x3) B43469 IB Spoiler Servovalve (x4) B43981 Flaperon Servovalve (x4) B43471 Aileron EHSV (x4) A38103 OB Spoiler EHSV (x8) Part Number Description 256W3110 256W3210

J27028-21 LOCK – RUDDER AND ELEVATOR POWER CONTROL UNIT (PCU) AIRCRAFT APPLICATION : B777-200, 300. MAINTENANCE CATEGORY: FLIGHT CONTROLS. Lead Time (days): Weight (kg): Dimensions (cm): L: x W: x H: Stock location: Condition: NEW

Apr 2, 2016 · Spoilers 4 and 11 receive mechanical signals for roll control. For spoilers 4 and 11, a cable system connects the control wheels to the spoiler PCUs. Cable movement supplies a mechanical input to the PCUs which move the spoilers. The movement of the PCU housing supplies mechanical position feedback.

Jul 31, 2023 · How does the Fly-By-Wire (FBW) system ensure that the movement of both actuators are synchronized; in other words, how do the Power Control Units (PCUs) prevent over-extension of one actuator relative to the other so that torsional stresses on …

May 6, 2004 · The feel and centering mechanism for the B777 for both the wheel and column is a simple cam and roller mechanism. For the aileron it is something in the order of 2kgs at breakout to 6 kgs at full travel.

Oct 12, 2017 · However, the reality is that there are two separate systems that control flight on the B777: The Primary Flight Control System (PFCS) and High Lift Control System (HLCS). The B777 is a fly-by-wire aircraft.

Oct 30, 2001 · Here it is straight from the B777 Maintenance Training Manual: Flaperon PCU Modes The flaperon PCUs operate in two modes: Rev 4 02/08/1997 - Normal - Bypass. The flaperon PCU is in the normal mode when there is no failure in the PCU or its ACE. The ACE then energizes the bypass solenoid.

J27033-1 LOCK – OUTBOARD AILERON POWER CONTROL UNIT (PCU) AIRCRAFT APPLICATION : B777-200, 300. MAINTENANCE CATEGORY: FLIGHT CONTROLS. Lead Time (days): 3: Weight (kg): 2: Dimensions (cm): L:15 x W:15 x H:15: Stock location: Condition: NEW

The new technologies in flight control avionics systems selected for the Boeing 777 airplane program consist of the following: Fly-By-Wire (FBW), ARINC 629 Data Bus, and Deferred Maintenance....