This is a timed quiz. You will be given 2700 seconds to answer all questions. Are you ready?
In relation to the flow through a venturi tube:
As the tube narrows dynamic pressure increases and so for total pressure to remain constant static pressure reduces.
The weight of an aeroplane is considered to act through:
The CG is a point of balance, its position depends on weight and the position of the individual parts of the aeroplane and its load. Weight acts through the CG.
What is the wing loading of a 1425kg aeroplane having a wing area of 15 square metres?
Wing loading = The weight of the aeroplane / wing area. (1425kg/15 sqm = 95kgm2)
Compared to the free stream airflow, in normal flight, air over the top of a wing will:
The camber of the wing means that as air passes over the top of it will increase in speed compared to the free stream flow, as it is forced over the top curvature of the camber.
The airspeed of an aeroplane in straight and level flight is increased:
Parasite drag is proportional to airspeed and induced drag is inversely proportional to airspeed.
The purpose of streamlining is to:
The purpose of streamlining is to delay airflow separation and to reduce form drag. Form drag is a type of parasite drag that is affected by the shape of an object going through the air and therefore proportional to speed. Streamlining decreases form drag.
What is the angle of incidence?
The angle of incidence is between the chord line of the wing (where the wing is mounted to the aircraft) and the longitudinal axis. The longitudinal axis is the axis in which the aircraft rolls about.
Total drag may be defined as:
Total drag is the sum of all the drag acting on the plane. Drag is coupled to thrust. Thrust acts in the direction of flight therefore drag acts in the opposite direction.
As seen from the cockpit, a clockwise rotating propeller will create effects which lead to what phenomenon?
A clockwise turning propeller creates a slip stream around the aircraft which, by the time it get to the tail plane, pushes the tail plane to the right. Inadvertently this will make the aircraft yaw to the left. This effect increases with the increase in power, thus on take-off with full power, will create a big yaw tendency to the left.
What is the design called whereby an up-going aileron moves through a larger angle than the down going aileron?
The up-going aileron moves through a larger angle to prevent adverse aileron yaw.
Longitudinal stability is greatest with:
Longitudinal stability is greatest with a forward cg and least with an aft cg.
What is the purpose of trim tabs?
Trim tabs are secondary flight controls attached to the trailing edge of primary flight controls. They are used to counteract the aerodynamic force of the control surface or “trim” in order to stabilise the aircraft.