Flight Controls of an Aircraft

Overview

• Flight controls consist of various services controlling aerodynamic forces, allowing pilot control.
• Divided into two systems: Primary and Secondary flight controls.

Primary Flight Controls

• Purpose: Used primarily by the pilot to control the airplane.
• Components:
  • Ailerons: Control roll/bank.
    • Located on the wings' back ends, towards the tips.
    • Rolling left: Left aileron up, right aileron down.
    • Rolling right: Right aileron up, left aileron down.
  • Elevator: Controls pitch (climb/descend).
    • Attached to the back of the horizontal stabilizer.
    • Moving controls forward/aft changes pitch.
    • Pulling back: Elevator moves up, tail down, nose up for climbing.
  • Rudder: Controls yaw.
    • Attached to the back of the vertical stabilizer.
    • Controlled by rudder pedals.
    • Left pedal: Nose slides left.
    • Used in coordination with ailerons for turning.

Secondary Flight Controls

• Purpose: Modify performance and reduce pilot workload.
• Components:
  • Flaps: Increase lift during takeoff and landing.
    • Located on the wing's backside, near the fuselage.
    • Controlled by a lever, either electric (e.g., Cessna 172) or manual (e.g., Piper Arrow).
    • Extending flaps changes wing shape, increases lift for slower speeds.
  • Trim: Eases pilot control, allows for "hands-free" flying.
    • Elevator Trim: Controlled via cockpit wheel.
      • Adjusts elevator trim tab.
      • Neutral during takeoff; adjusted during climb for ease.
    • Rudder Trim: Ground adjustable.
      • Compensates for left-turning tendencies during climb.

Key Takeaways

• Flight controls are essential for achieving desired airplane performance.
• Understanding primary and secondary controls aids in efficient aircraft handling.
• Primary controls directly influence roll, pitch, and yaw.
• Secondary controls enhance lift and reduce pilot fatigue.