Aircraft Rigging
Aircraft rigging involves two principle types of operations.
- The aircraft structure must be rigged for correct alignment of all fixed components,The structures are aligned at the time of positioned in the assembly jig and then start to assembly.
- Type of rigging is the alignment of control surfaces and the controls that move the surfaces.These operation require the adjustment of cable length, cable tension, push-pull rod, bell cranks, cable drums, and various other parts.
Note: Angular deflection of control surfaces must be measured with protractors or other measuring
devices.
Leveling the aircraft
When rigging the aircraft, It may necessary to establish the aircraft in a level attitude(ฺBoth longitudinal and lateral levels) prior to checking and adjusting wings and control surfaces.once the aircraft is level longitudinally and laterally, the component can be rigged.
One method used on many light aircraft is to set up a spirit level on a longitudinal structure to establish the longitudinal level position and another level across specific structural members to establish the lateral level position.Screw can be placed into two nut plates on the side of the fuselage, a spirit level placed on the extended screw for leveling the aircraft.
Some aircraft make use of a plumb bob and a target to establish the aircraft level attitude on both axes.
If the aircraft is not level, it can be leveled by the use of supports under the aircraft, such as jacks or tail stands. The inflation of tires and struts can be adjusted, as can the fuel loads in wings and fuselage.
Note: Care must be taken not to place a support jack at a structural weak area such as on skin panel between bulkhead,If the air pressure is reduced in tire or struts to establish the aircraft level attitude or if fuel is tranfered for this purpose, the aircraft must be properly servicing be fore it is returned to operations.
ไม่มีความคิดเห็น:
แสดงความคิดเห็น