DURATION: 0.75 Hrs
OBJECTIVES
During this lesson, the student will gain an understanding of the aerodynamics of autorotations.

Content
A) Aerodynamics of autorotative descents
1) Direction of airflow
2) Aerodynamic regions
a) Autorotative or driving region - thrust
b) Stall region - drag
c) Propeller or driven region - drag
d) Reversed flow region
3) Rotor RPM
a) In turns
b) Effects of updrafts and downdrafts
c) Minimum rate of descent
d) Maximum glide distance
e) Effect of flares
f) Controlling rotor RPM
4) Airspeed
a) Manufacturer&amp;rsquo;s minimum autorotational airspeed
b) Minimum rate of descent
c) Maximum glide distance
d) Height - Velocity Diagram
5) Torque effect
a) When needles split
b) During descent
c) During collective pitch application

B) Hovering autorotations
1) Torque effect
2) Translating tendency
3) High inertia rotor system vs. Low inertia system

COMPLETION STANDARDS
This lesson will be complete when, by oral examination, the student displays an understanding of the material presented and has completed the study assignment.