Merci Paul !
Le Légacy 500, lui aussi a eu un peu de mise au point et de retard, à cause des commandes de vol électriques de BAE cette foi ??
Et une analyse intéressante de AviationWeek à lire aussi !
A voir comment ça va marcher, chaque nouveau système doit répondre aux même nécessités, mais il serait intéressant un jour de comparer toutes les approches, leurs qualités et limitations, maintenant que plusieurs marques et constructeurs sortent des avions et les certifient avec le FBW ! Seizing the High-Tech High Ground
The Legacy 500 is as much high technology demonstrator as it is a transportation tool. This starts with its digital fly-by-wire (FBW) flight control system, a technology previously only offered on a few large-cabin jets, such as the $52 million Falcon 7X and $65 million G650. Similar to Dassault and Gulfstream, Embraer’s FBW development team took a decidedly pilot-centric approach to the system.
Ram air turbine supplies virtually unlimited DC power down to 140 kt. in the event of a triple generator failure. Credit: Embraer
This FBW system is intended to be used on a whole new family of Embraer business aircraft, as well as being adapted for Embraer’s KC-390 military transport and the second generation of regional E-Jets.Embraer’s approach to FBW is elegant in its simplicity, providing carefree handling characteristics to minimize workload most of the time, but it also provides natural aerodynamic feel in the landing pattern.
There are no absolute pitch or roll limits, but the normal maneuvering envelope has +30/-15-deg. pitch and +/-33-deg. bank soft limits that can be exceeded by maintaining sidestick control deflection. Flight crews thus have virtually unlimited pitch and roll maneuverability with the FBW system only guarding them against over-speed and overstress, stall and spin.
The system has only two modes: normal law and direct law. There are no alternate laws or intermediate modes that could result from possible degradation scenarios. If the FBW’s computers cannot support full envelope protection, the system automatically downshifts to direct law mode. But even if the system doesn’t automatically go to direct law when it should, pilots can manually select direct law mode at any time at the touch of a button. Envelope protection is disabled in direct law mode, but there still are stall warning and yaw damper functions.
The aircraft also has standard full-authority autothrottles and autobrakes, features currently found only on the G280 and larger aircraft.Vu sur Aviation Week !