Ground Training Lesson 1
2.0 Hours Ground
by Philip Greenspun and Kasim Te; revised August 2006
Developed for students at East Coast Aero Club which operated under FAR Part 141 from July 2008 through July 2010.
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Objective
During this lesson the student will study basic aerodynamics to gain an understanding of the principles of helicopter flight.
Elements
- The Four Forces
- Lift
- Weight
- Thrust
- Drag
- Airfoils
- Symmetrical vs. unsymmetrical
- Leading edge
- Trailing edge
- Chord line
- Relative wind
- Angle of attack
- Bernoulli's principle
- Tip path plane
- Factors Affecting Lift and Drag
- Surface area
- Angle of attack
- Velocity of airflow
- Air density
- Blade stall
- The Three Axes of Movement
- Longitudinal - Roll
- Lateral - Pitch
- Vertical - Yaw
- Torque
- Newton's third law of motion
- Tail rotor thrust
- Controlling torque
- Rotor Systems
- Fully articulated
- Semi-rigid
- Rigid
- Vibrations
- Sympathetic resonance
- Ground resonance
Completion Standards
This lesson will be complete, when by oral examination, the student displays an understanding of the material presented.
Instructor's Evaluation and Recommendations: