Determination of airplane longitudinal stability derivatives from transient responses
MetadataShow full item record
This study was carried out in an effort to determine the longitudinal stability derivatives of a Ryan Navion airplane using dynamic flight testing methods. This was done by recording the transient response of the airplane to elevator forcing functions in the form of steps or pulses. Data reduction was carried out using the equations of motion method and the derivative method. Due to partial failure of the instrumentation the results from the equations of motion method were disappointing. More successful results were obtained using the derivative method in conjunction with the useful data acquired from the equation of motion method. Concurrent with this report an investigation was carried out to find the stability derivatives of the same airplane from both theoretical considerations and from steady state flight testing. This investigation is described in Reference 7. An effort has been made to correlate the flight test results obtained from the dynamic and steady state methods and predictions made from theory. This correlation appears in Appendix B.
Showing items related by title, author, creator and subject.
Keith, Stephen Thomas (Monterey, California: Naval Postgraduate School, 1973-09);To aid in the modeling of a steady state spin, the equations of motion of an airplane are formulated in a cylindrical coordinate reference frame. The derivation of the equations is presented and the resulting equations ...
The numerical solution and analysis of airplane spin equations modeled in a fixed coordinate system Champoux, Robert Louis (1972-12);Three forms of the airplane spin equations of motion, derived by Buehler in Reference [l], form the basis for the development of a computer program designed to seek dynamically stable equilibrium solutions of a spinning ...
The derivation, solution, and analysis of airplane spin equations modeled in an inertial coordinate system Buehler, Roy Robert (Monterey, California. Naval Postgraduate School, 1972-03);The general equations of motion for a rigid body are derived in cylindrical coordinates by Lagrangian dynamics and used to model the motion of an airplane in a steady spin. After simplification, the equations are cast ...