Flight Dynamics II (Stability)

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Airplane nomenclature and aerodynamics, Review of basics of rigid body dynamics, Concepts of static and dynamic stability, Need for stability in an airplane, Purpose of controls, Inherently and marginally stable airplanes,Longitudinal and Lateral directional static stability.

Stick Fixed: Basic equations of equilibrium, Stability criterion, Wing and tail moments, Effects of fuselage and nacelles.
Effects of c.g.location, control effectiveness, hinge moment, tabs, aerodynamic balancing, Power effects.
Stabiliser setting and c.g.location, Elevator effects, Stick fixed neutral point, Determination of neutral points and maneuver points in flight tests.

Stick Free: Hinge moment coefficients, Stick free neutral point,symmetric maneuvers, Stick force gradients and stick force per g.
Dihedral effect, Coupling between rolling moment and yawing moment, Adverse yaw, Aileron power. Aileron reversal. Weathercock effect, Rudder requirements. One engine inoperative conditions, Rudder lock.
Equations of motion, equations of motion of a disturbed aircraft, aircraft dynamic modes and stability criterion,Stability derivatives, Control derivatives, Routh’s discriminant, solving the stability quartic, Phugoid motion, Factors affecting the period and damping.

Dutch roll and spiral instability. Longitudinal & lateral directional dynamic modes. Effect of maneuvers, Airplane response to atmospheric and control inputs,Introduction to flying qualities and stability augmentation Systems. Aircraft autopilot design using classical control theory. Introduction to nonlinear problems in aircraft flight dynamics.

Course Curriculum

Mod-01 Lec-01 Earth Atmosphere,Aircraft components,Aircraft nomenclature Details 47:57
Mod-01 Lec-02 Basic aerodynamics Details 56:14
Mod-02 Lec-03 Equilibrium and stability Details 51:56
Mod-02 Lec-04 Static vs dynamic stability Details 41:50
Mod-03 Lec-05 Criterion for stability,Wing contribution Details 0:42
Mod-03 Lec-06 Horizontal tail contribution Details 52:34
Mod-03 Lec-07 Wing plus tail contribution Details 49:30
Mod-04 Lec-08 Static margin and CG limits Details 45:51
Mod-04 Lec-09 Fuselage contribution Details 49:23
Mod-04 Lec-10 Powerplant contribution Details 48:2
Mod-04 Lec-11 Power effects on neutral point Details 47:30
Mod-05 Lec-12 Elevator Details 41:21
Mod-05 Lec-13 Stick free stability, Most fwd CG location Details 47:40
Mod-05 Lec-14 Longitudinal stick force per ‘g’, Ground effect Details 44:14
Mod-06 Lec-15 Control requirement, Pull-up maneuver, Maneuver point Details 50:43
Mod-06 Lec-16 Elevator per ‘g’ , Maneuver point Details 49:39
Mod-06 Lec-17 Example problems Details 49:56
Mod-07 Lec-18 Lateral-Directional Stability Derivatives, Fuselage/Vertical fin contribution Details 50:12
Mod-07 Lec-19 Roll stability, Wing sweep effect, Rudder Details 48:40
Mod-07 Lec-20 Dihedral effect, Various contributions Details 44:57
Mod-07 Lec-21 Power effects, Roll control, Aileron Details 40:9
Mod-07 Lec-22 Example problems Details 51:13
Mod-08 Lec-23 Derivation of Translational Motion Equations Details 43:40
Mod-08 Lec-24 Derivation of Angular Motion Equations Details 50:57
Mod-08 Lec-25 Description of various forces and moments Details 42:40
Mod-08 Lec-26 Nonlinearities and Associated Aircraft Behavior Details 52:11
Mod-09 Lec-27 Small perturbation method, Linearization of equations Details 45:49
Mod-09 Lec-28 Aerodynamic force and Moment Derivatives Details 50:59
Mod-09 Lec-29 Contribution of Aircraft components to Aerodynamic Derivatives Details 52:23
Mod-09 Lec-30 Linear Model and Aircraft Dynamics Modes Details 52:5
Mod-10 Lec-31 Short Period, Phugoid(Lanchester’s formulation) Details 48:27
Mod-10 Lec-32 Short period mode approximation Details 49:36
Mod-10 Lec-33 Flying and Handling Qualities, Cooper Harper Scale Details 48:15
Mod-11 Lec-34 Pure rolling motion, Pure yawing motion,Spiral approximation Details 50:10
Mod-11 Lec-35 Spiral, Roll, Dutch roll Mode approximations Details 48:54
Mod-11 Lec-36 Lateral directional Flying Qualities, Routh’s Stability criterion Details 45:6
Mod-11 Lec-37 Stability in Steady Roll Maneuver Details 49:26
Mod-12 Lec-38 Wind Effect on Aircraft Pure Plunging Motion Details 47:14
Mod-12 Lec-39 Wind Profiles, Longitudinal Mode Response to Wind Shear Details 43:6
Mod-13 Lec-40 Stability control/Augmentation Details 44:32
Mod-13 Lec-41 Autopilots, Automatic Landing System Details 42:59

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