Project: Les'BD-4     -     Entry

Nov 02, 2022 40 Control construction update Category: Controls
I have been working on several components of the control system. There are 3 Major components: Aileron controls via the control yoke, Elevator controls also with the control Yoke and the Rudder controls via rudder pedals. I will discuss the progress of each of these areas.

Aileron: I have completed the fabrication of the core elements of the cable system located horizontally in the cockpit. These consist of the control yoke, pulleys that take the control cable from the yoke to the base pulley, through the landing gear box, outward to the sides, back to the lower aileron bellcrank, then back to the connecting return to the other side. Pulley mounts and brackets have been held in place with clecos. Only cable guards on each pulley need to be made with the control cables.

Elevator: A bracket was welded to connect the forward elevator tube to the control yoke. This bracket was required to lower the angle of the tube. The aft portion is connected to a "swing" to transfer the for and aft motion toward the rear of the aircraft. Brackets and bracing hold the "swing" in place, The Forward and the portion of the aft tube in the passenger compartment will be eventually covered by a tunnel fabricated from sheet aluminum. This will also form an armrest and center console for gauges and engine controls.

Rudder: Cables attatch to the inner portion of the rudder pedals adjacent to the control column. The cables will travel inside the tunnel under the swing and to the aft of the fuselage. A rudder bellcrank has been fabricated and secured to the rear of the fuselage. The cables are guided to the rear by micarta guides and connect to the rudder via a control rod attached to the rudder bellcrank.

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