Flight Operations & Aircraft Systems

Aviation operations integrate aerodynamics, aircraft systems, meteorology, and human factors into safe and efficient flight. This pack covers FLT (flight) operations from principles through systems knowledge applicable across GA (general aviation) and commercial operations.

Aerodynamic Principles

Lift is generated by pressure differential across an airfoil. Bernoulli's principle and Newton's third law both contribute — the wing deflects airflow downward (downwash) while accelerating flow over the upper surface creates lower static pressure. The lift equation: L = CL x 0.5 x rho x V^2 x S, where CL is the lift coefficient (varies with AOA), rho is air density, V is TAS (true airspeed), and S is wing area.

AOA (angle of attack) — the angle between the chord line and REL wind (relative wind) — is the primary lift control. As AOA increases, CL increases linearly until CLmax at the critical AOA (typically 15-18 degrees for clean wing). Beyond critical AOA, airflow separation causes STALL — sudden lift loss and drag increase. Stall speed varies with load factor: Vs(loaded) = Vs(1G) x sqrt(n), where n is load factor in G.

Four forces in equilibrium flight: lift equals weight, thrust equals drag. In a steady climb, excess thrust (T - D) provides climb gradient. ROC (rate of climb) = (excess power) / weight. Best angle of climb speed (Vx) maximizes climb gradient; best rate of climb speed (Vy) maximizes altitude gain per time.

DRAG has two components: parasite drag (form, friction, interference — increases with V^2) and induced drag (byproduct of lift generation — decreases with V^2). Total drag is minimum where parasite equals induced — this speed (L/Dmax) gives maximum range in a jet and maximum endurance in a prop.