SS White Technologies is supplying flexible rotary shafts specifically designed to transmit rotary torque for the manual override on the Honeywell Aerospace Starter Air Valve used on GE9X turbofan engines.
The GE9X will power Qatar Airways 777-8 freighters and Singapore Airlines 777-9 aircraft.
The Honeywell Aerospace Air Turbine Starter (ATS) consists of two components, the Starter and the Starter Air Valve. The Starter Air Valve controls air flow from the Engine Bleed, APU or Ground supply to the ATS and has significant built-in operational and protection features.
One of the features incorporates an SS White flexible rotary shaft that allows ground crews to manually actuate the Starter Air Valve in case of an operational failure, enabling the aircraft to still be dispatched and avoid flight delays and cancellations.
In addition, all SS White aerospace flexible shaft products are designed to one of the industry’s highest performance criteria by utilising a computer modelling software program developed by SS White called Perflexion.
This program allows the design engineers to more fully model the behavioural characteristics of the wire bundles within the shaft core and arrive at an optimum product that provides maximum bending flexibility and torsion strength while allowing minimal torsion deflection with up to a 30% improvement over competitive products.
