787 Synthetic Airspeed
Calculated from angle of attack and inertial data
- AOA - voted dual sensors plus inertial data
- Accurate Coefficient of Lift (CL)
- Airplane Mass from FMC - Validated after Takeoff
Algorithm developed for enhanced stall protection
Avoid displaying data known to be bad
- Loss of valid voted VCAS = Display synthetic airspeed VSYN
- Loss of valid voted PSTATIC = Display GPS altitude
Thanks for posting the B787 method of using "synthetic" airspeed and GPS altitude when discrepancies with the Pitot/Baro system are detected. I've placed the details of the image you
posted in quotes above, mainly so that it will be found when searching the thread.
So my answer to Machinbird's challenge is for Airbus to implement a similar system as described above and alluded to by me as early as July 2009 in
post #3999 in the AF447 Thread and recently in
post #616 in AF447 No.4 Thread.
Now I haven't heard of any B787 pilots objecting to not having to deal with UAS - has anyone else??