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

Content
A) Aerodynamic Principles
1) Rotor Airfoil Types
2) Relative Wind
a) Tip Path Plane (Rotational Relative Wind)
b) Resultant Relative Wind
3) Induced Flow
4) Angle of Incidence
5) Angle of Attack
6) Coning
a) Lift
b) Centrifugal force
7) Blade Flapping
8) Coriolis effect

B) Hovering Flight
1) Lift and Thrust resultant
2) Weight and Drag
3) Translating Tendency or Drift
4) Ground Effect
5) Forward, sideward and rearward hovering
a) Lift and thrust resultant
b) Weight and drag
6) Gyroscopic precession
7) Pendular action
8) IGE / OGE
a) Definition
b) Aerodynamics
c) Effects of surfaces


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.