HELICOPTER AERODYNAMICS WORKBOOK
CHAPTER FOUR REVIEW QUESTIONS
_________________________is the self-sustaining rotation of the rotor blades in
For unpowered flight, induced flow is perpendicular/parallel to the tip-path-plane and
comes from above/below the rotor disk.
Pro-autorotative force is the vertical/horizontal component of lift/profile drag.
What is the anti-autorotative force in the rotor system?_____________________________
The three conditions required to enter an autorotation are____________, ____________,
How does the flare in an autorotational descent affect the aircraft?____________________
Minimum rate of descent in unpowered flight is achieved by_________________________
The unshaded areas of the H-V diagram identify the portions of the flight envelope from
which a ____________________can be accomplished in the event of a____________________.