Originally Posted by
NickLappos
A number of systems have been developed to provide the answer, and some oare very good. Here is an overall discussion, the autho might not have been aware that Comanche had a blade-mounted system that was excellent:
http://www.dsto.defence.gov.au/publi...TO-TN-0495.pdf
Interesting article, Nick. It mentions various rotor mounted systems in section 3.2. Specifically hub mounted OADS and MI-28 Havoc having blade tip pitots, along with Sikorsky algorith for using sinusoidal airspeed variation.
Was this type of system accurate enough for the FBW control system to generate dihedral restoring moments, or did the system use accelerometers for small period movements? The accs would be needed to null out any dynamic oscillations.
Mart