Ground Training Lesson 15
1.5 Hours Ground
by Philip Greenspun and Kasim Te; revised July 2008
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
The student will assume the instructor's role and present a
classroom lecture on the aerodynamics of turns, loads, settling with
power, and autorotative descents.
Elements
- The Turn
- Lift components in a turn
- Vertical component
- Horizontal component
- Total lift resultant
- Weight and centrifugal force in a turn
- Angle of bank vs. angle of attack
- Angle of bank vs. rate of turn
- Loads and Load Factor
- How conditions of flight affect loads
- Straight and level flight
- Turns
- Flares
- Load factors
- Definition
- Effect of angle of bank
- Effect of turbulence and high gross weight
- Effect of density altitude and pilot technique
- Settling with Power
- the vortex ring state
- settling with power on a steep approach
- settling with power during an aerial photography mission
- escaping from settling with power, upwind and downwind
- Autorotative Descents
- Definition
- Free wheeling unit
- Direction of airflow
- Rotor RPM
- Effect of turns
- Effect of flares
- Effect of updrafts and downdrafts
- Airspeed
- Manufacturer's minimum and maximum autorotational airspeeds
- Minimum rate of descent airspeed
- Maximum glide distance airspeed
- Hovering autorotation
- Torque effect
- Translating tendency of drift
- Energy management
Completion Standards
This lesson will be complete when, by oral examination, the student
is able to explain and teach the topics in the lesson.
Study Assignments
- A lesson plan to be prepared by the student, including lecture notes, review questions, and figures.
- Rotorcraft Flying Handbook
Instructor's Evaluation and Recommendations:
Ground Training Record, Lesson 15
Any deviations from the completion standards should be noted in the previous section.
After completing an item in the Elements section, place a check mark next to that item.
- Student Name:
- Instructor Name/CFI#/expiration:
- Instructor Endorsement:
- Date of Lesson: