Chapter Three Terminal Objective

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CHAPTER THREE
TERMINAL OBJECTIVE
3.0
Upon completion of this chapter, the student will be able to describe and analyze the
aerodynamics of powered rotary wing flight.
ENABLING OBJECTIVES
3.1
Draw and label a power required/power available chart and a fuel flow versus airspeed
chart.
3.1.1
Identify maximum endurance/loiter airspeed.
3.1.2
Identify maximum rate of climb airspeed.
3.1.3
Identify the best range airspeed and state the effects of wind components on best
range airspeed.
3.2
Define torque effect.
3.2.1
State the means by which we counteract
3.2.2
State the means by which we control the helicopter about the vertical axis.
3.2.3
State the means by which a multi-headed aircraft counteracts
3.3
State the effect the tail rotor will have on power available to the main rotor.
3.4
State the two means by which tail rotor loading is reduced in forward flight.
3.5
State one problem created by use of a tail rotor system to counteract
3.6
Define virtual axis, mechanical axis and center of gravity.
3.6.1
State the relationship between center of gravity, mechanical axis and virtual axis.
3.7
List the forces acting on the main rotor head.
3.7.1
Define centrifugal and aerodynamic force.
3.7.2
Define coning.
3.8
Interpret how a vortex is formed and how it affects the efficiency of the rotor system.
3.9
State the effect the main rotor vortices have on the tail rotor at low airspeeds.
HELICOPTER POWERED FLIGHT ANALYSIS 3-1

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