ATG M1 - Kenya School Of Flying

The tendency for control surfaces to flutter at high speed can be avoided by:

• adjusting servo tabs on trailing edge.

• fitting a mass balance forward of the leading edge of the control surface.

• using balance tabs on the leading edge.

• fitting spring tabs to the trailing edge.

On a modern light aircraft with a cantilever wing, the weight is supported by

• the metal skin.

• internal wire bracing.

• the ribs.

• one or more deep spars.

The principal reason why light training aircraft have fixed undercarriage is that:

• training aircraft need to manoeuvre on the ground.

• the reduced performance caused by the additional drag of a fixed undercarriage is offset by its simplicity, low cost and easy maintenance.

• training aircraft need to be supported at a convenient height.

• training aircraft need to ensure that kinetic energy on landing is absorbed.

The 'Ply Rating' of a tyre:

• indicates the number of rayon or nylon cords.

• shows how many breaker strips are embedded in the tyre.

• shows how many breaker strips are embedded in the tyre.

• is an index of the strength of the tyre.

During one complete cycle of a four stroke intenal combustion engine how, many times will each valve open and close?

• Four times.

• Twice.

• Three times.

• Once.

Engine compression ratio is the ratio of the

• swept volume to the clearance volume.

• clearance volume to the swept volume.

• swept volume to the total volume.

• total volume to the clearance volume.

The advantages of diesel engines over petrol (gasoline) engines are:

• diesel fuel is cheaper than gasoline.

• fuel consumption is lower.

• diesel engines are more durable.

• all the above.

Baffles

• are placed within the lubrication system to slow down the passage of oil into the engine.

• reduce the flow of air around the engine.

• are directional air guides which direct the airflow fully around the cylinder.

• must be close fitting to reduce the flow of air around the engine.

If a blockage occurs in the oil cooler of an aircraft engine while the aircraft is in flight, a by-pass valve

allows the oil to by-pass the cooler. The by-pass functions on the principle of:

• pressure dependence.

• temperature dependence.

• mechanical selection.

• hydraulic selection.

when a magneto is selected OFF, the switch located in the primary circuit

• IS opened, breaking circuit continuity.

• is closed and the circuit is earthed.

• is opened and the circuit is earthed

• is closed, earthing the plug leads.