M_8

How is computed the specific humidity?. In percentage. g/cube metre. g/kg.

In the ISA. The temperature at sea level is 69 F. The air is considered dry. The density is 29.82 inches of mercury.

If the temperature decrease, what happens?. The air can contain a lower amount of water. The air can contain the same amount of water. The air can contain a higher amount of water.

In the atmosphere the gas most present is. Nitrogen. Argon. Oxygen.

Which of the following parameters is determined by the aspect ratio?. the aerodynamic behavior of a wing. the airfoil camber changes when flaps are extended. the wing load in each flight condition.

How is the relative thickness of thin airfoils?. greater than 0.1. lower than 0.08. lower than 1 and greater than 0.04.

How is the airfoil section of the horizontal tailplane?. Biconvex symmetric. Plane convex. Biconvex asymmetric.

When air is not viscous?. in reality air is always viscous. at high speed. at low pressure.

When concave-convex profiles are used?. on helicopter blades. on high-speed aircrafts. on gliders or slow aircrafts.

Very low aspect ratio are typical of. Gliders. General aviation aircraft. Fighters.

During the stall the separation point. moves backward. moves forward. does not move.

What is the point of stagnation?. The point with lower speed. The point with lower temperature. The point with lower pressure.

During the stall. The drag increase. The drag decrease. The lift increase.

Which is the unit of measurement of drag coefficient?. Newton/Second. Newton/Area. None of the other answers.

What does Bernoulli's law say?. If the speed decrease, the static pressure decrease. If the speed decrease, the static pressure increase. If the speed decrease, the static pressure remains steady.

The centre of pressure. Changes with the altitude. It is in constant position. Changes with the angle of attack.

Aerodynamic forces depend on. The cube of the velocity. The square of the velocity. The velocity.

What is an ideal fluid?. A fluid incompressible and viscous. A fluid incompressible and not viscous. A fluid compressible and not viscous.

What represents the law of continuity?. The conservation of Momentum. The conservation of Energy. The conservation of Mass.

Where the Delta wing has the best performance?. Supersonic speed. Hypersonic speed. Sonic speed.

In which part of the swept wing the stall tends to happen first?. centre section. tip. root.

When the wash-out is necessary?. In both swept-wing and not swept-wing aircraft. In swept-wing aircraft. In not swept-wing aircraf.

During a flat turn, how much is the load factor along z?. It depends on the angle. Zero. One.

When does skid happen during a banked turn?. When the centrifugal force is bigger than the centripetal. Never. When the centripetal force is bigger than the centrifugal.