White flexible rotary shafts to help actuate the Thrust Reverser Actuation System
(TRAS) that opens deflectors along the rear side of the aircraft’s engine nacelles
to slow the aircraft down after landing to insure a safe arrival.
S.S. White provides a set of four flexible rotary shafts per engine that are
activated to synchronize the actuation system that opens both halves of the
thrust reverser panels after landing. These same flexible shafts also help lock
the TRAS system to prevent it from inadvertently engaging during flight.
In addition, all aerospace flexible shaft products are designed to one of the
industry’s highest performance criteria by utilizing a unique computer modeling
program developed by S.S. White called PERFLEXION. This program allows the
design engineers to fully model the behavioral characteristics of the wire bundles
within the shaft core and arrive at an optimum product that provides maximum
bending flexibility and torsional strength while allowing minimal torsional
deflection with up to a 30 percent improvement above accepted industry