LC

Flight Training Concepts

Altitude and Time

  • Rate: Understanding rate is crucial for determining altitude gained over time.
    • Best rate of climb yields the maximum altitude gain in the shortest period of time.
    • Best rate of climb speed ranges between 68 to 73 knots.
    • For practical exercises, use 70 knots as the standard climbing speed.

Best Angle of Climb

  • Best Angle of Climb: Aims to gain the greatest altitude over the shortest horizontal distance.
    • Currently, this speed is not emphasized until progressing to solo flights and circuit training.
    • Best angle of climb speed at sea level ranges between 59 and 61 knots.
    • For exercises, use 60 knots for practical purposes.

Performance Factors During Climb

  • Discussed factors affecting climbing performance:
    • Asymmetric Thrust: Causes yaw during climb due to uneven thrust from propeller blades.
    • Down-going blade has a higher angle of attack, resulting in greater thrust on one side, causing yaw to left.
    • Attitude: Nose-high attitude can lead to high power settings but low speed.

Pilot Operating Handbook (POH) Insights

  • Factors affecting performance include time, fuel, distance, and temperature.

    • Temperature variations affect performance at different elevations.
    • Higher altitudes lead to decreased performance due to lower air density.
    • For example, at 10,000 feet, the aircraft struggles to climb effectively, hitting performance ceilings around 14,000 feet.
  • Understanding Density:

    • The performance of aircraft is influenced by temperature, air density, and altitude.
    • Warm air is less dense than cold air, adversely affecting lift.
    • The increase of weight requires more power to overcome gravity.
    • Wind contamination (snow, frost, ice) can also impact airflow.

Climbing Procedures

  • Visibility & Safety:

    • Conduct a proper lookout for other aircraft, monitoring blind spots during climbs.
    • Avoid prolonged climbs at high temperatures without cooling procedures to prevent engine overheating.
  • Climbing Procedures:

    • Follow the “red door” mnemonic:
    • Rich Mixture: Set mixture prior to climb.
    • Attitude: Pitch nose up, aiming for 70 knots.
    • Power: Adjust power setting to achieve desired climb.
    • Trim: Utilize trim for consistent flight attitude and ease of control.
    • Right Rudder: Apply corrective rudder pressure to counteract yaw.

Descents

  • Two types of descents:
    • Power-Off Descents: Engine idle for increased descent rate.
    • Power-On Descents: Shallower rate, better for passenger comfort with warmer engines.

Factors Affecting Performance During Descents

  • Air density and weight affect rate of descent.
  • Turbulence may require speed adjustments during descent.
  • Monitor potential shock cooling of engines; intermittently adding power during long descents can mitigate rapid cooling.

Airspeed and Limitations

  • Red Line Airspeeds:
    • Acceptable maximum speed is 160 knots.
    • Maximum engine RPM should not exceed 2700 RPM.

Procedures for Descents

  • Procedures follow a similar mnemonic to climbs:
    • Red Door: Ensure mixture rich, check carb heat.
    • Power: Reduce power setting first.
    • Attitude: Set a proper descending attitude.
    • Trim: Adjust trim accordingly.

Turns

  • Turns are fundamental flight maneuvers requiring coordination of ailerons, rudder, and elevators.
    • Categories of turns:
    • Gentle Turns: Bank angle of 0-15 degrees.
    • Medium Turns: Bank angle from 15-30 degrees.
    • Steep Turns: Bank angle exceeding 30 degrees, generally practiced at 45 degrees.

Aircraft Dynamics

  • During straight and level flight, lift balances weight.
  • In a turn, the vertical component of lift must compensate for the load factor increase.
  • Load Factor: Increases with steeper banks, affecting stall speed and control requirements.

Adverse Yaw

  • During turns, there’s a natural tendency for the nose of the aircraft to yaw opposite of the turn due to increased drag on the rising wing.
    • Use rudder input in combination with aileron input to maintain coordinated turns and reduce adverse yaw.

Safety and Monitoring

  • Continue to ensure visibility (i.e. clear check) during maneuvering and adjust procedures accordingly for climb/descent as needed.