Originally Posted by
songzheng
“
If your stick is neutral, you're asking for 0 roll rate. So the aircraft will damp any roll rate. But the resulting roll won't be corrected.”
how can the system damp the roll rate and matain level,and the next sentence the resulting roll still exist??? how to understand this,in my mind it is no roll rate=no roll=0 bank
thxxxxx
The gust overpowers the airplane's ability to damp to 0 roll rate, so some bank angle develops. After that, the bank stays there because the control law does not respond to bank angle within 33 degrees.
Originally Posted by
Sim25
Ok last take on this: I cite (out of the paper I referenced): "The objectives are thus: To have an absolutely neutral spiral mode for a bank attitude lower than 33° ie: with the sidestick in neutral position, the lateral attitude will be frozen in spite of any lateral gusts." later it is discribed that "On the other hand, as far as gusts are concerned, the aircraft will respond with modes p1 and p2. If the aircraft is subjected to lateral gusts, as the stick remains in the zero position, the PHI_C target is therefore unchanged and the control loop will counter the gust to bring the aircraft back to its initial lateral attitude."
Seems like this is describing the part that brings the bank to 33 degrees if exceeded, and not the general case within 33 degrees.