Helicopter Composite Blade Section Characteristics

The design of structure and dynamics of a rotor blade is based on its section characteristic of composite blade. Now, it is important to develop the composite blade researching, two measures including analysis methodology and finite methodology are provided. In this text, the finite rotation composite beam theory developed by Hodges and his co-workers, during the late 1980's, is adopted in order to research rotor of helicopter. A liner and two-dimension finite analytic measure is used to calculate the section characteristic and strain of the blade; a semianalysis methodology is used to calculate the sensitive degree of section characteristic. In addition, analysis methodology for composite beam and non-classic effects of beam are discussed. At last, a few calculator cases of kinds of section are presented, whose result is proved.