Sift Study Guide Army Aviation Latest
Updated
Which of these is one of the three types of drag that constitute total drag? - ANS-
Parasite.
The force that resists the movement of a helicopter through the air and is produced
when lift is developed is called drag. Drag must be overcome by the engine to turn the
rotor. Drag always acts parallel to the relative wind. Total drag is composed of three
types of drag: Profile, induced, and parasite
Which of the following is common to all turbine helicopters, but is only on some piston
powered helicopters? - ANS-Governor
Governors are common on all turbine helicopters (as it is a function of the fuel control
system of the turbine engine), and used on some piston powered helicopters
Where is the horizontal reference datum located? - ANS-It varies by helicopter
The horizontal reference datum is an imaginary vertical plane or point, arbitrarily fixed
somewhere along the longitude axis of the helicopter, from which all horizontal
distances are measured for wight and balance purposes. there is no feed rule for its
location. it is established by the helicopter manufactureer
The _______ position relative to the horizon determines the helicopters travel and
attitude - ANS-Cyclic
The cyclic position relative to the horizon determines the helicopters travel and attitude
When training for a rapid deceleration, in most helicopters the entry speed should be
approximately? - ANS-45 knots
Training maneuvers for rapid deceleration should always be don into the wind. after
leveling off at an altitude between 25-40 feet, depending upon the manufacturers
recommendations, accelerate to the desired entry speed, which is approximately 45
knots for most training helicopters
Which of the following has been the army primary training helicopter since 1993? -
ANS-BELL TH-67
Updated
Which of these is one of the three types of drag that constitute total drag? - ANS-
Parasite.
The force that resists the movement of a helicopter through the air and is produced
when lift is developed is called drag. Drag must be overcome by the engine to turn the
rotor. Drag always acts parallel to the relative wind. Total drag is composed of three
types of drag: Profile, induced, and parasite
Which of the following is common to all turbine helicopters, but is only on some piston
powered helicopters? - ANS-Governor
Governors are common on all turbine helicopters (as it is a function of the fuel control
system of the turbine engine), and used on some piston powered helicopters
Where is the horizontal reference datum located? - ANS-It varies by helicopter
The horizontal reference datum is an imaginary vertical plane or point, arbitrarily fixed
somewhere along the longitude axis of the helicopter, from which all horizontal
distances are measured for wight and balance purposes. there is no feed rule for its
location. it is established by the helicopter manufactureer
The _______ position relative to the horizon determines the helicopters travel and
attitude - ANS-Cyclic
The cyclic position relative to the horizon determines the helicopters travel and attitude
When training for a rapid deceleration, in most helicopters the entry speed should be
approximately? - ANS-45 knots
Training maneuvers for rapid deceleration should always be don into the wind. after
leveling off at an altitude between 25-40 feet, depending upon the manufacturers
recommendations, accelerate to the desired entry speed, which is approximately 45
knots for most training helicopters
Which of the following has been the army primary training helicopter since 1993? -
ANS-BELL TH-67
