Minimum Sink

Lesson Objective

Regulatory Requirement

• Pre-Solo: 14 CFR §61.87(i)(8)
  
• Private Pilot Candidate: PTS V(A)

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

• 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

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