A Theoretical Approach to a Study of Stall-flutter Problems |
Common terms and phrases
1+fiki aerodynamic excitation Aeronautical Engineering airfoil aka cost amplitude angle of attack approximation asin assume Attack Degree Attack for Different B₁ B₂ casiny chord classical flutter coefficient condition cooł coof coor Cornell University cycle is stable Different Velocities dimensionless equation of motion external excitation fi˛ Fico Flutter Region flutter speed free-stream velocity function of angle fundamental harmonic heteroperiodic hysteresis Infinitesimal Input initial angle k₁ lift curve limit cycle linear linear elastic mode shape natural frequency non-resonance nonlinear parameter polynomial quasi-linear quasi-steady Ra Sp rad Angle rad/sec reduced frequency Reynolds number self-excitation shed vortices sin˛ sint stall flutter stall region stall-flutter static stalling stationary stream velocity Substitution of Eq Taylor series Taylor's series torsional oscillation torsional spring unstable vortex vortices shed αφ Δα ба См