Methods for Obtaining Desired Helicopter Stability Characteristics and Procedures for Stability Predictions
F. B. Gustafson · Robert J. Tapscott
Jan 1957 · National Advisory Committee for Aeronautics
eBook
28
Pages
About this eBook
Part 1 of this report presents a brief review of methods available to the helicopter designer for obtaining desired stability characteristics by modifications to the airframe design. The discussion is based on modifications made during the establishment of flying-qualities criteria and includes sample results of theoretical studies of additional methods. The conclusion is reached that it is now feasible to utilize combinations of methods whereby stability-parameter values are realized which in turn provide the desired stability characteristics. Part 2 reviews some of the methods of predicting rotor stability derivatives. The procedures by which these rotor derivatives are employed to estimate helicopter stability characteristics have been summarized.
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