EASA Part 66 Cat A Module 11.1 questions with
verified answers
Aluminium strength can lose approximately how much strength at
temperatures over 250 degrees C Ans✓✓✓ 80%
does the balance tab aid the pilot Ans✓✓✓ yes
extending flaps and slats will do what to the profile of a wing Ans✓✓✓
increase camber and area
how are oblique shockwaves employed in intakes Ans✓✓✓ to
gradually slow the supersonic airflow before the normal shock occurs
How do vortex generators reduce wave drag? Ans✓✓✓ by producing
an oblique shock wave inside the supersonic flow
how does a horn balance surface assist a control movement? Ans✓✓✓
air loading assists control deflection
how does the vortex generator re energise the boundary layer flow?
Ans✓✓✓ it transfers energy from the free airflow to the boundary
layer
, how is a high speed turn controlled by flying control surfaces?
Ans✓✓✓ aileron and roll spoilers
how is tuck under avoided on modern aircraft Ans✓✓✓ mach trim
system
how many ailerons are fitted to large a/c and how do they operate?
Ans✓✓✓ four, 2 o/b and 2 i/b. at low speed, all operate. at high speed
I/B only.
name the three types of balance used on flying controls? Ans✓✓✓
balance tab, anti balance tab and balance panel.
the automatic system of the horizontal stabiliser which corrects for tuck
under is known as Ans✓✓✓ Mach trim
there is a large increase in what behind the shockwave on an aerofoil
section? Ans✓✓✓ a large increase in static pressure
what are the advantages and disadvantages of a v tail Ans✓✓✓ weight
saving, more complicated adjustment needs larger surface area, less
stable
verified answers
Aluminium strength can lose approximately how much strength at
temperatures over 250 degrees C Ans✓✓✓ 80%
does the balance tab aid the pilot Ans✓✓✓ yes
extending flaps and slats will do what to the profile of a wing Ans✓✓✓
increase camber and area
how are oblique shockwaves employed in intakes Ans✓✓✓ to
gradually slow the supersonic airflow before the normal shock occurs
How do vortex generators reduce wave drag? Ans✓✓✓ by producing
an oblique shock wave inside the supersonic flow
how does a horn balance surface assist a control movement? Ans✓✓✓
air loading assists control deflection
how does the vortex generator re energise the boundary layer flow?
Ans✓✓✓ it transfers energy from the free airflow to the boundary
layer
, how is a high speed turn controlled by flying control surfaces?
Ans✓✓✓ aileron and roll spoilers
how is tuck under avoided on modern aircraft Ans✓✓✓ mach trim
system
how many ailerons are fitted to large a/c and how do they operate?
Ans✓✓✓ four, 2 o/b and 2 i/b. at low speed, all operate. at high speed
I/B only.
name the three types of balance used on flying controls? Ans✓✓✓
balance tab, anti balance tab and balance panel.
the automatic system of the horizontal stabiliser which corrects for tuck
under is known as Ans✓✓✓ Mach trim
there is a large increase in what behind the shockwave on an aerofoil
section? Ans✓✓✓ a large increase in static pressure
what are the advantages and disadvantages of a v tail Ans✓✓✓ weight
saving, more complicated adjustment needs larger surface area, less
stable
