WorksheetsPoF Chapter 6 Drag
Total questions: 15
Worksheet time: 8mins
Which of the following is a result of lift generation?
Induced Drag
Form Drag
Interference Drag
Skin-friction Drag
Form drag results from:
The pressure at the leading edge of the body being greater than the pressure at the trailing edge.
The pressure at the leading edge of the body being lesser than the pressure at the trailing edge.
The pressure at the leading edge of the body being equal to the pressure at the trailing edge.
The pressure at the leading edge being zero.
Parasite drag varies directly with the square of the:
CAS
GS
IAS
EAS
Induced drag is strongest when the aircraft is flown at:
low airspeed with low angle of attack
low airspeed with high angle of attack
high airspeed with low angle of attack
high airspeed with high angle of attack
The speed at which total drag is at minimum occurs when:
parasite drag = induced drag
parasite drag > induced drag
parasite drag < induced drag
parasite drag - induced drag
A heavier aircraft will generate:
more induced drag
more lift
more parasite drag
more thrust
Drag acts _____ and in the ______ direction as the relative airflow.
parallel ............. same
parallel .............. opposite
perpendicular .............. same
perpendicular ............... opposite
Which of the following increase parasite drag?
flaps extended
increase in mass
higher aspect ratio
decrease in speed
Which of the following will not reduce induced drag?
geomatric washout
winglets
tip tanks
fairings
Doubling the speed will give _________ the dynamic pressure.
four times
equal amount
half
10%
A lighter aircraft will:
have a lower VMD
have a higher VMD
generate higher induced drag
generate less lift
Extending the trailing edge flaps will:
reduce thrust
increase induced drag
increase VMD
reduce VMD
An aircraft has a VMD of 73 knots, but the pilot is flying is flying the aircraft at 70 knots:
the aircraft can quickly decelerate if the angle of attack is increased without increasing engine power
the aircraft can quickly accelerate if the angle of attack is increased without increasing engine power
the aircraft will generate less induced drag
the aircraft will be speed stable
To maintain airspeed, any increase in drag will have to be compensated with:
more density
more thrust
more lift
more weight
Parasite drag varies with
weight
lift
dynamic pressure
wing chord
