From theoretical study it has been found that rates of roll within certain limits may cause instability if directional and longitudinal stabilities are different; if stabilities in both planes are equal, instability due to rolling will not occur; if rolling frequency is sufficiently high, rolling aircraft may be stable even if non-rolling aircraft is unstable in one plane.
Effect of steady rolling on longitudinal and directional stability
Nat Advisory Committee Aeronautics -- Tech Note
1948
36 pages
Report
English
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