HELICOPTER AERODYNAMICS WORKBOOK
CHAPTER FIVE REVIEW QUESTIONS
Two factors which limit a helicopter's forward speed are_____________________and
As forward speed increases, the "no lift" areas of the rotor system move_______________.
List the indications of retreating blade stall.
High gross weight and low rotor rpm increase the likelihood of retreating blade stall._____.
The proper procedure when encountering blade stall is to apply forward cyclic and full up
Vortex ring state usually occurs during_______________, _______________flight
at__________airspeed while out of________________.
The tail rotor can experience vortex ring state.____________(True/False)
Ground resonance is a destructive phenomenon particular to hingeless rotor systems
operating near the San Andreas fault.____________(True/False)
________________and________________are the essential elements of dynamic rollover.
When a dynamic rollover situation is suspected, the best course of action is to_________.
A low-G maneuver may cause mast bumping.____________(True/False)
What other conditions are conducive to mast bumping?___________________________
When mast bumping occurs, the correct response is to apply________________cyclic.
The most common normal vibrations associated with helicopters
A buzz felt on the pedals is most likely associated with vibration originating from the
Loose external stores may cause________________vibrations.
5-14 FLIGHT PHENOMENA