WorksheetsRPL Aerodynamics Section 9-15 Questions
Total questions: 23
Worksheet time: 12mins
If an aeroplane has negative stability, this indicates that once disturbed it will
Move back towards its original position.
Stay at its new position.
Keep moving further away from its original position.
Go Inverted.
Longitudinal stability is provided by the tail plane and enhanced by a
Forward CoG
Aft CoG
In a piston-engine aircraft, maximum endurance is achieved by flying at the IAS which
Uses least power.
Creates the minimum total drag.
Is the slowest possible for straight and level flight.
Requires the smallest angle of attack for level flight.
In a piston-engine aircraft, maximum range is achieved by flying at the IAS which
Uses least power.
Creates the minimum total drag.
Is the slowest possible for straight and level flight.
Requires the smallest angle of attack for level flight.
An aeroplane has wing dihedral built into it to
Improve longitudinal stability.
Improve lateral stability.
Decrease lateral stability.
Improve directional stability.
In a steady climb:
Lift exceeds weight and thrust exceeds drag.
Lift exceeds weight and thrust is less than drag.
Lift is less than weight and thrust is less than drag.
Lift is less than weight and thrust exceeds drag.
What changes in the control of an aircraft must be made to maintain altitude when airspeed is being decreased?
The AoA must be increased to compensate for the decreasing lift caused by the reduction in airspeed.
The AoA must remain the same.
The AoA must be increased to produce more lift than weight.
The AoA must be decreased.
In straight and level flight, minimum thrust is required
At the lowest possible flying speed.
At the speed where the total drag is least.
At the speed where parasite drag is least.
At the speed where induced drag is a minimum.
Which statement is true relating the effect of low level windshear on aeroplane performance?
A headwind which shears to a tailwind causes the aeroplane to pitch up.
A headwind which shears to a tailwind causes an initial decrease in airspeed.
A tailwind which shears to a headwind causes the aeroplane to pitch down.
A tailwind which shears to a headwind causes an initial decrease in airspeed.
Which airspeed is the best to fly at to clear obstacles after take-off?
Best rate of climb speed.
Cruise climb speed.
Best angle of climb airspeed.
Minimum controllable climb airspeed.
The rate of descent may be increased by
Adding power.
Lowering the nose.
Raising the nose.
Lowering the flap.
The speed for maximum LD ratio
Is the same irrespective of aircraft weight.
Is faster for higher weights.
Is slower for higher weights.
Depends on the angle of attack.
Maximum rate of climb is governed by
Excess thrust available.
Excess power available.
Best L/D ratio.
Headwind component.
Load factor is defined as the ratio of
Weight over lift.
Lift over weight.
Actual weight to ‘g’ force or gravity.
Apparent weight to lift.
The maximum angle of bank in a climbing turn is approximately ___________
5°
15°
30°
45°
If angle of attack is increased from 4 up to the critical angle the
Lift increases but drag remains constant.
Lift and drag will vary depending on speed.
Lift will increase and drag will increase.
Lift will suddenly decrease and drag will increase.
Indicated stall speed is affected by
Angle of attack, weight and air density.
Weight, load factor and power.
Weight, density altitude, power and turbulence.
Load factor, angle of attack and power.
Turning from base leg onto final approach to land using 30o bank
The stalling speed remains the same in the turn as when the wings are level.
The stalling speed decreases in the turn.
The stalling speed increases because of the increased load factor in the turn.
The stalling speed increases because the flaps are lowered.
If the stalling speed when flying S & L is 50 kt, then in a 45o banked turn the stalling speed will be approximately
50 kt.
60 kt.
70 kt.
45 kt.
When flying straight and level the load factor is
1
Dependent on airspeed
2
Dependent on weight
Compared to the straight and level stalling speed, what percentage increase in stall speed would you expect in a 60o banked turn?
None
Slight increase
100%
41%
Approaching a primary airport, you notice a large passenger jet has just taken off and is commencing a climb. Wingtip vortices and their associated turbulence are created
Whenever the aircraft is producing lift.
Only when the aircraft is heavily loaded.
Only when the aircraft is operating at high speeds.
Only when the aircraft is using high power settings.
The angle of attack at which an aeroplane stalls
Is greater when flying into wind compared with flying downwind.
Depends upon the airspeed over the wings.
Is a function of the altitude.
Remains constant regardless of gross weight.
