Principles of Flight questions.
Hi all,
I have a few questions from the Volare question bank which I have problems with and would appreciate an explanation:
93) If flaps are deployed at constant IAS in straight and level
flight, the magnitude of tip vortices will eventually : (flap
span less than wing span)
A) increase.
B) remain the same.
C) increase or decrease, depending on the initial angle of attack.
D) decrease. (according to the mark scheme)
101) If the altitude is increased and the TAS remains constant
in the standard troposphere the Mach Number will:
A) decrease.
B) not change.
C) increase or decrease, depends of the type of aeroplane.
D) increase. (according to the mark scheme)
According to the diagrams relating IAS, MN and TAS with altitude for an isothermal layer, if TAS stays constant and altitude is increased, MN also stays constand and IAS decreases.
225) What is the effect on induced drag of weight and speed
changes ?
A) induced drag increases with decreasing speed and induced
drag increases with increasing weight
B) induced drag decreases with increasing speed and induced
drag decreases with decreasing weight (according to the mark scheme)
C) induced drag decreases with decreasing speed and induced
drag decreases with increasing weight
D) induced drag increases with increasing speed and induced
drag increases with decreasing weight
I would say that A and B say the exact same thing:
-if induced drag increases with decreasing speed, it obviously decreases with increasing speed.
-if induced drag decreases with decreasing weight, it obviously increases with increasing weight.
330) Which statement is correct about the gust load on an
aeroplane (IAS and all other factors of importance
remaining constant) ?
1. the gust load increases, when the weight decreases.
2. the gust load increases, when the altitude increases.
A 1 and 2 are incorrect.
B) 1 is incorrect and 2 is correct.
C) 1 is correct and 2 is incorrect. (according to the mark scheme)
D) 1 and 2 are correct.
What happens to the IAS of maximum rate of climb when the temperature decreases at low altitudes?
A) Increases
B) Decreases
C) Doesn't vary
D) First a) and then b)
Thanks.