Report of the Second Piloted Aircraft Flight Control System - Acgsc.org

Note that d$, is identical to k;', listed in Table I.
SPDG CONSTANTS AND MASSES EQUAL - A large portion of the foregoing
discussion has to be based upon the asmmption that approximate
factorization of the transfer function dmaxbtor is ssible. This
tacitly aeeumes that the ad /-- are considerably
separated, If these quantities are wt separated by a wide
margin, there are no means available to detezmine the effect of change of
an individual parameter upon the system except by the use of numerical
values.
It is, however, valuable to investigate a Umiting case where the
values of
'
=/M, and are close together, the
case for which Aa/, - 4
=-A' and M= = Ms = M . For
simplification it is also assumed that the valve damping,
zero. The open loop transfe~ function then becomes:
8, , is
uhlch, with approximate factors becanes:
The Bode diagram of this system is shown in Fig. U),