By G. Padfield
The habit of helicopters is so complicated that knowing the actual mechanisms at paintings in trim, balance and reaction, and hence the prediction of flying characteristics, calls for a framework of analytical and numerical modeling and simulation. stable flying traits are very important for making sure that venture functionality is available with protection and, within the first version of Helicopter Flight Dynamics, a finished therapy of layout standards was once offered. during this moment version, the writer enhances this with a brand new bankruptcy on degraded flying features, drawing examples from flight in bad visibility, failure of regulate features, and encounters with serious atmospheric disturbances. absolutely embracing the results of degraded flying characteristics in the course of the layout part will give a contribution definitely to protection.
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Extra resources for Helicopter Flight Dynamics (Aiaa Education Series)
Throughout the history of aviation, the need to extend operations into poor weather and at night has been a dominant driver for both economic and military effectiveness. Fifty years ago, helicopters were fair weather machines with marginal performance; now they regularly operate in conditions from hot and dry to cold, wet and windy, and in low visibility. One of the unique operational capabilities of the helicopter is its ability to operate in the NoE or, more generally, in near-earth conditions deﬁned in Ref.
This variability will be emphasized repeatedly and in many guises throughout this book to emphasize that we are not just talking about an aircraft’s stability and control characteristics, but more about the synergy between the internals and the externals referred to above. In later sections, the need for a systematic ﬂying qualities structure that provides a framework for describing criteria will be addressed, but we need to do the same with the mission and the associated ﬂying tasks. For our purposes it is convenient to describe the ﬂying tasks within a hierarchy as shown in Fig.
They will almost certainly have invested some of their ego in their high level of skill and ability to perform well in difﬁcult situations. Any developments that call for changes in the way they ﬂy can be met by resistance. To a large extent, this reﬂects a natural caution and needs to be heeded; test pilots are trained to be critical and to challenge the engineer’s assumptions because ultimately they will have to work with the new developments.