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

changing flight corditions. Idea-, one would design dynamic compensation
networks, as suggested in some of the earlier talks--compensation networks
which would be automatically compensated for c-ng longitudinal velocity,
eta. If the compensation is effected entirely electricalJy, thle dynamic
cornpensat ion can be approximated fairly well, although the complexity of the
instrumentation necessarily is greater than with a linear qystem. If as we
have tried to suggest in the past fm moments, the campensation is effected
hydraulically and mechanically, dynamic compensation is a more difficult
problem. Ae yet we have done nothing along this line.
I would like to summarize briefly. We feel that the time is rapidly
approaching when the stability and controllability problems of design will
be of paramount importance. We feel that it is essential that logical
design procedures be established in anticipation of these difficulties.
logical desiep prodwe must proceed from quantitative 8pecifications.
It must lead to suitable general networks for accomplishing the cornpeneation.
We feel that conpensation system can be determined which will essentially
force the airplane to meet the selected performance specifications. The
realization of these compensation systems can be accoqlished electronically.
We al8o feel that compensation can be effected hydraulically and mechanically.
We believe that there is a great deal of work yet to be done in evaluating
various Q-draulic-mechanical systems for compensation, in studying the
effects of various locations of these networks in the overall system, in
considering the poabibillty of using parallel compensation, and in the
related probldl~lb.
The system. I have ueed throughout this paper as an ~ l of some e of
these ideas is about as simple a system as one can devime to scoomplish even
theoretically the desired control. We feel that it is essential that mare
complar (and reallatie) system8 be considered from this standpoint of
stabillaation devices. appreciable complication of the system will
necessitate going to computer and simulator studies, as the introduction
of additional degrees of freedom rapidly places the complex it^ of the wstsa
beyond the bounds of human comprehension. Thus far, we have not done Whlq
appreciable with d o g computer studies, as we have felt that intelligent us.
of ccenputer data required a solid understanding and background in the behavior
of simpler elystams.