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.