Aerodynamics Revision Questions Flashcards
Fast transport aircraft may have a supercritical wing section. This is to -
A. Give max lift at low speed
B. Give min lift at high speed
C. Reduce the top wing surface acceleration
D. Reduce the bottom wing surface acceleration
C. Reduce the top wing surface acceleration
You are holding at 3000ft, your ideal holding would primarily be determined by -
A. Engine RPM
B. IAS
C. Flap extension limits
D. Body angle limits
B. IAS
Jet over speed warnings will operate -
A. At Vmo/Mmo
B. Slight above Vmo/Mmo
C. Slightly below Vmo/Mmo
D. Slightly Vdf/Mdf
B. Slight above Vmo/Mmo
The manoeuvring speed (Va) -
A. Is fixed for all weights
B. Is lower at high gross weight and higher at lower gross weight
C. Is lower at higher altitude and higher at lower altitude
D. Is higher at higher gross weights and lower at lower gross weights
D. Is higher at higher gross weights and lower at lower gross weights
Concerning slotted flaps and/or Fowler flaps -
A. Slotted flaps increase the chord and preserve the energy in the boundary layer of the airflow while Fowler flaps increase the camber and chord
B. Slotted flaps increase the camber and preserve the energy in the boundary layer of the airflow while Fowler flaps increase the camber and chord
B. Slotted flaps increase the camber and preserve the energy in the boundary layer of the airflow while Fowler flaps increase the camber and chord
An internal flexible seal attached to the leading edge of a control surface is designed to -
A. Provide q feel force feedback
B. Assist control load balancing
C. Limit control surface travel
D. Waterproof the hinge compartment
B. Assist control load balancing
If the best lift/drag ratio = X then for best angle of climb performance, the aircraft should fly at a speed -
A. Equal to X
B. Faster than X
C. Slower than X
D. 1.32 times X
A. Equal to X
True or false
At all altitude Mach number is the ratio of TAS to local speed of sound
False
True or false
The mach number required for max range cruise is independent of head or tail wind
False
True or false
For a given FL and GW, induced drag will decrease with increasing IAS
True
True or false
For a constant IAS and FL, MACH number is affected by changes in air temperature
False
True or false
High propulsion efficiency is typified by low mass flow and maximum possible velocity change
False
True or false
Max range is achieved at CL/CD max
False
True or false
Gas turbine engine thrust varies linearly with engine RPM
False
True or false
Engine airflow undergoes greatest pressure change through the compressor
True
