TTTech, of Austria, said Tuesday it was selected by BAE Systems to provide commercial off-the-shelf (COTS) products, based on the Time-Triggered Protocol (TTP), for flight computers in Embraer's fly-by-wire system, designed for Legacy 450 and 500 business jets.
TTP is standardized as SAE AS6003 "TTP Communication Protocol." With its capability to support up to 25 Mbit/s per channel, it offers substantially higher bandwidth compared to CAN, MIL STD-1553 and ARINC 429, according to TTTech. The fly-by-wire electronic flight controls, supplied by Parker Aerospace, includes aileron, elevator, and rudder actuators; remote electronic units; and a flight control computer. The flight control computer is being developed by BAE Systems.
"We have been evaluating TTP for several years and finally decided to use it in the Legacy 450/500 fly-by-wire programs. TTP, due to its features and cross-industry usage, is the most promising, highly reliable and advanced solution for our flight control computer", says Andy Buckley, program manager at BAE Systems. "TTTech technology and products based on TTP allow us to build a highly modular, scalable and cost-efficient solution for fly-by-wire applications."