| A generalized technique suitable for use in flight simulators to simulate an aircraft in a spin was evaluated. The technique was used to create a general aviation type aircraft flight model, with spin capabilities, using only static aerodynamic coefficients. The dynamic coefficients (rolling and yawing moments versus roll, pitch and yaw rates) were synthesized by separately calculating velocities, angle of attack, and from these the forces acting on each wing. The different forces produced by each wing therefore create rolling and yawing moments which depend on the aircraft's rotational velocity. When test flown, a spin-like response was found. An experiment was designed to determine the subjective realism of the maneuver to pilots. A visual display scene was developed to present aircraft motion cues to the pilot. A classical washout filter algorithm was used to drive the motion base, using several different transfer functions. The piloted simulation on the six degree-of-freedom UTIAS Flight Research Simulator was flown by six pilots with a variety of flight experience. The motion was found to be generally satisfactory, however a deficiency was noted in the lack of sufficient motion cues at the moment of spin entry. Aircraft handling characteristics entering, during and recovering from the spin were found to be satisfactory. |
