
Ch05-H6927.tex 20/6/2007 16: 34 Page 99
The Solution of the Equations of Motion 99
response information is readily obtained. Furthermore, obtaining the system trans-
fer function is usually the prelude to the design of a feedback control system and an
additional array of mathematical tools is also available to support this task. Since most
modern aeroplanes are dependent, to a greater or lesser extent, on feedback control
for their continued proper operation, it would seem particularly advantageous to be
able to describe the aeroplane in terms of transfer functions. Fortunately this is easily
accomplished. The Laplace transform of the linearised small ...