The history of flight control is inseparably linked to the history of aviation itself. Since the early days, the concept of automatic flight control systems has evolved from mechanical control systems to highly advanced automatic fly-by-wire flight control systems which can be found nowadays in military jets and civil airliners. Even today, many research efforts are made for the further development of these flight control systems in various aspects.
The classic text on helicopter aerodynamics, "Aerodynamics of the Helicopter" has been in continuous print for over fifty years. Clearly written and well illustrated, the book focuses on fundamental physical relationships without a highly complex mathematical development. The emphasis on fundamentals makes the book an ideal - indeed, necessary - first step towards more advanced study.
Flight controls have advanced considerably throughout the years. In the earliest
biplanes flown by the pioneers flight control was achieved by warping wings
and control surfaces by means of wires attached to the flying controls in
the cockpit. Figure 1.1 clearly shows the multiplicity of rigging and control
wires on an early monoplane. Such a means of exercising control was clearly
rudimentary and usually barely adequate for the task in hand.
There are few physical phenomena so generally studied which are
as misunderstood as the phenomenon of flight. Over the years
many books have been written about flight and aeronautics (the
science of flight). Some books are written for training new aeronautical
engineers, some for pilots, and some for aviation enthusiasts.
Books written to train engineers often quickly delve into complicated
mathematics, which is very useful for those who wish to make
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