* Sorry for going on about this
*
Here follows some more on the 'synthesized IAS'. The software could work much like in face recognition, assuming that every [relative speed level vs altitude] make its own distinct pattern.
The noise could possibly be attenuated by incorporating broad audio spectrum analysis in addition to the accelerometer and piezo-electric readings from points within the main carrying structure.
About cost, the computing could possibly be done on an affordable modern server, and the software could be open sourced.
Mac OS X and Linux are solid operative systems and not prone to crash / output BSOD's.
The system structure could be made to accept multiple failures and still output reasonable data.
THAT is what causes the bending.
I meant the full motion of the wing, not just the vertical.