Aerodynamics Mastery Quiz
Aerodynamics Mastery Quiz
Test your knowledge in the fascinating field of aerodynamics with our comprehensive quiz designed for aviation enthusiasts and professionals alike. With 40 questions covering a variety of essential topics, this quiz is the perfect opportunity to gauge your understanding of lift, stability, and aircraft design.
Key Features:
- 40 challenging questions
- Multiple choice and drop list formats
- Instant feedback on your answers
Which of these wing planforms is suitable for an aircraft to fly at transonic speed?
Straight
Swept
Tapered
Eliptical
Which of these characterises the mean camber line?
The line drawn joining points at the centre’s curvature of the leading and trailing edges
The line drawn joining the centre of gravity and the centre of pressure
The line drawn between the chord line and the relative airflow
The line drawn joining points halfway between the upper and lower curved surfaces
Which of these describes lateral static stability?
Control about the longitudinal axis
Control about the line through the centre of gravity
Control about the normal axis
Control about the chord line
Which of these can be adjusted to enhance the stability of an aircraft?
Centre of gravity
Chord line
Reference datum
Centre of pressure
How is an aircraft in longitudinal, statically stable flight affected by a nose-up pitching movement?
Angle of attack decreases
Centre of pressure moves forward
Centre of gravity moves forward
Angle of incidence decreases
What mach number does transonic flight fit into?
Long period oscillations that last between 40-50 seconds?
Phugoid
Coanda
Fungi
Long period oscillation
Purpose of an aircraft lift augmentation device?
Reduce takeoff distance
Increase lift
Load factor equation
Lift ÷ weight
Load x weight
Weight ÷ lift
Weight ÷ load
An aircraft has a load of 2100kg and a weight of 1000kg. What is the load factor?
2.1G
21G
210G
13G
How do banking turns affect the load factor
Unaffcted
Increase it
Decrease it
Which of these represents Positive equilibrium
0%
0
0%
0
0%
0
0%
0
Which of these describes how aircraft flaps alter the flow characteristics of an aerofoil?
Decrease lift, increase drag
Increase lift, increase drag
Increase stall speed, decrease drag
Decrease angle of descent, decrease drag
Which of these is an advantage of a Fowler flap over a plain flap on an aircraft?
Decreases maintenance costs
Makes plane lighter
Produces more lift
Decreases the wing area
Which of these is a buffet problem that occurs as an aircraft approaches the speed of sound?
Control reversal
Loss of control
Reduction in drag
Tailplane veering down
Which of these explains the term ‘flight envelope’?
The directional stability of an aircraft
The static combination of airspeed and load factor
The point where the critical angle of attack is exceeded
The operational capabilities of an aircraft
Which of these airflows has a separation point?
Boundary layer
Free stream
Turbulent
Laminar
Dihedral wings...
Increase rolls stability
Decrease roll stability
Increase roll capabilities
Speed of sound (rough)
330m/s
3000m/s
200m/s
113131m/s
What is flutter?
Oscillations that last between 40-50seconds
Vibration in the aircrafts structure
Purpose of vortex generators?
Creat turbulent air
Re-energise airflow to delay seperation point
Create lift
Decrease lift
Purpose of winglet?
Make airflow turbulent
Increase drag
Decrease drag
Increase lift
What is the name of the force acting on the aircraft that maintains the turn?
Gravity
Drag
Centripetal
Weight
What does this image represent?
Positive dynamic stability
Negative static stability
Neutral static stability
Negative dynamic stability
Which of these describes the use of rudder limiters?
Disables rudder input from the cockpit pedals
Prevents the pilot from applying excessive rudder force
Disables rudder at constant airspeed
Prevents rudder deflection at high air speeds
Which of these are used for counteracting adverse yaw on an aircraft?
Ailerons
Taiilerons
Slats
Stabilators
What is the seperation point?
When the airflow contacts the aerofoil
When the boundary layer leaves the aerofoil
When the airflow sperates
Aspect ratio (AR) equation?
AR= b2\A
AR=b2xA
AR=A/b2
AR=Axb2
Following the last question, what does The 'A' and 'b' stand for
A= Wing area b= Wing base
A= Aerofoil area b= Wing area
A= Wing span b= Wing area
A= Wing area b= Wing span
What is the chord line?
Line drawn between the trailing and leading edge
The line drawn between the upper and lower curvature
The angle between the chord and relative airflow
Agle of incident
An aircraft travelling at the speed of sound climbs from 20 000 ft to 40 000 ft What happens to the speed of sound as the plane climbs to 40 000 ft?
It stays the same
It doubles
It increases
It decreases
Weathercocking is when the aircraft turns towards the wind
True
False
Dutch roll is when the aircraft goes into a flat spin
True
False
Flaperons are a combination and elevators and ailerons
True
False
What is the purpose of a spoiler
Increase drag
Decrease drag
Increase lift
Reduce lift
What thickness to chord is best at supersonic flight
High thickness to chord
Low thickness to chord
Medium thickness to chord
Anhedral wings increase roll performance
True
False
Bernoullis principle states
Low pressure air at a high velocity will go over the wing to meet with high pressure air with low velocity beneath
High pressure air at a Lowvelocity will go over the wing to meet with Low pressure air with High velocity beneath
High pressure air at a high velocity will go over the wing to meet with high pressure air with High velocity beneath
Low pressure air at a Low velocity will go over the wing to meet with high pressure air with High velocity beneath
What does the use of stall strips give an early indication of?
A stall in level flight
A stall at low angles of attack
A stall at high angles of attack
A stall in flight descent
Which of these will reduce skin friction drag when applied to a smooth metal aerofoil?
Oiling
Painting
Polishing
Sanding
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