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Effects of Controls

Exercise 4

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Objective

To understand the impact of differing airspeeds and slipstream effect on controls

To be able to fly the aircraft at specified airspeeds

To be able to ‘trim’ the aircraft

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NOTE: carburettor-heat, cowl flap, vents, cabin heat, flaps & spoilers.

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Three Primary Controls

Roll

(Spiral Dive)

Yaw

Rudder

Normal

Adverse Yaw

Yaw

(Spiral Dive)

Roll

Aileron

Longitudinal

Speed

Pitch

Elevator

Lateral

Secondary

Primary

Control

Axis

N.B. Control Deflection governs RATE of change

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Airspeed & Slipstream

  • Differing Airspeeds
    • Rudder
    • Elevator
    • Ailerons

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Differing RPM (slipstream)

    • Rudder & Elevator

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Effect of Changing Power

  • Roll
  • Yaw (balance)
  • Climb /decent
  • Results in a change in airspeed
  • Note ‘it works’ in reverse too – changing airspeed leads to a change in RPM
  • Note Non Linear (lever movement vice RPM)

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Adjusting the Throttle

  • Consider engine temperature
  • Set by sound and feel POWER
  • Maintain
    • Level (ATTITUDE)
    • Lateral level
    • Direction
    • Balance
  • TRIM

RPM IAS

3500 60 kts

4600 80 Kts

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Air Exercise

  • Demonstrate the effects of slip stream
  • Practice resisting the effect of changing slip stream
  • Practice adjusting the throttle

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  • Airmanship
    • Look out
    • Temps & Pressures

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Questions