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Minimum Sink

Lesson Objective

The lesson will learn the minimum sink speeds, how they relate to bank angle, and the importance of using the correct minimum sink speeds.

Regulatory Requirement

Content

  • Minimum sink speed for each club aircraft
  • Minimum sink speed for differing bank angles
  • Glide ratio at minimum sink. Compare with glide ratio at Max L/D
  • Minimum sink speed at the minimum pilot weight (solo) and at the glider's maximum gross weight

Completion Standards

The student must be able to perform

  • Straight and Level flight at minimum sink speed
  • 30° bank turns at minimum sink speed.
  • 45° bank turns at minimum sink speed.

The student must be able to explain

  • The effect of bank angle to minimum sink speed.
  • The effect of aircraft loading to minimum sink speed.

Prerequisite Study

  • Glider Flight Manual, "Minimum Sink Airspeed" Page 7-33

Next Lesson: 4d -- Slips: Forward, Side, Turning
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