A simplified method for the determination and analysis of the neutral-lateral-oscillatory-stability boundary

Sternfield, Leonard Gates, Ordway B , Jr
naca-report-943
1949


A necessary condition for neutral oscillatory stability is that Routh's discriminant r, formed from the coefficients of the stability equation, is equal to zero. Computations obtained from rsub1=0 and d=0 show very good agreement with the results calculated by the expression for r=0. The nature of the modes of motion as a function of the directional-stability derivative and the effective-dihedral derivative is discussed in detail.

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