BAK - Principles of Flight (Stalls, Spins & Spiral Dives) Flashcards
What happens to the lift and drag of a wing if the stalling angle is exceeded?
Lift significantly decreased,
Drag significantly increased
Once the stalling angle of a wing has been exceeded resulting in the smooth airflow over it becoming turbulent, does the Centre of Pressure rapidly move toward the leading edge or toward the trailing edge
CoP moves rapidly aft toward the trailing edge
Is frost and ice on the wing likely to increase or decrease an aircraft’s level flight stall speed
Increase (raise) the level flight stall speed
If an aircraft is flown at a lesser weight than is maxium allowable gross weight in level flight, will its stall speed be higher or lower than its stated level flight stall speed
lower
Will an increase in weight or ‘apparent weight’ increase or decrease an aircraft’s level flight stall speed
increase (raise)
For most recreational aircraft, what is the stalling angle or otherwise, angle of atttack for maximum L/D ratio?
16 degrees
For the same weight, or ‘apparent weight’, will an aircraft’s level flight stall speed change with a change of altitude?
No
What is a more desirable wing feature, a wing tip that stalls first or a wing root which stalls first?
Wing root
With a ‘steady’ wind blowing (as distinct from windshear), will the stalling speed of an aircraft remain constant or change whether flying upwind or downwind?
Remain constant
When the stalling angle is exceeded, will the aircraft gain height or stall?
stall
Is the ‘spin’ a stalled condition?
yes
Is the ‘spiral dive’ a stalled condition?
no
What condition is characterised by a rapidly increasing airspeed and rate of descent?
A spiral dive
What is the best measn of discrimination between a spin and a spiral dive with regards to airspeed?
In a spin, the airspeed in relatively low and remains constant
If the aircraft is at the point of stall, what would be the most likely cause of one wing dropping?
The ‘dropped” wing has stalled before the other wing
