Skip to main content

Slow Flight

Whiteboard

Maintain coordinated airplane control at slow speed with flaps.

Develop control feel at landing airspeeds with landing flap configuration.

  1. Application: Takeoff and landing
  2. 4-forces in flight
  3. Lift equation: V decreases, AoA increases
  4. Drag: Induced drag vs parasite drag
  5. High AoA: Left-turning tendencies, right rudder
lift=12ρV2SCl2\text{lift} = \frac{\frac{1}{2} \rho V^2 S C_l}{2}V=velocityCl=coefficient of liftV = \text{velocity}\\ C_l = \text{coefficient of lift}
  1. Pre-maneuver checklist
  2. Power idle, slow down don't go down
  3. Slowly 10°, 20°, and 40° of flaps
  4. Add power for altitude
  5. Pitch = Airspeed, Trim
  6. Right rudder
  7. Stall horn may chirp periodically
  8. Maneuvering
    1. Turns; Right rudder exercise
    2. Climb: More thrust
    3. Descent: Less thrust
  9. Recovery: Relax pressure
  10. Accelerate: 20° flaps
    1. 65 knots: 10° flaps
    2. 70 knots: flaps up
  • Stalls and spins, coordination
  • Turbulence
  • Scanning
  • Inadequate back pressure
  • Excessive back pressure
  • Uncoordinated turns
  • Failure to anticipate lift from flaps
  • Fixation on instruments
  • Fly just above stall warning
  • Straight and level, turns, climbs, descents
  • Altitude ± 50 ft.
  • Heading ± 10°
  • Airspeed +5/-0 knots
  • Bank ±5°

References