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Q1— Section header —
1.1Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A C\ next to the question number (1.1.1
1.1.5\n the ANSWER BOOK.
1.1.1measure the distance between two points. Chord line Flap Chord
1.1.2lead. dragging. lag.
1.1.3The angle between the longitudinal axis of the rotor blade and the angle of pitch. coning angle. angle of attack.
1.1.4Compression Tension Torsion
1.1.5
1.2Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 'False' next to the question number (1.2.1
1.2.5\in the ANSWER BOOK. Give ONE reason for each answer.
1.2.1A good oil must show a high degree of chemical stability in order to resist the action of high temperature, moisture and acids.
1.2.2A pressure relief valve is used to limit the amount of pressure being exerted on a confined liquid.
1.2.3A compressor is a source of energy in an aircraft pneumatic system.
1.2.4Indicated power is the power developed in the combustion chamber without reference to friction losses within the engine.
1.2.5
1.3Choose an item from COLUMN B that matches a description in COLUMN A Write only the letter (A G\next to the question number (1.3.1
1.3.5\ in the ANSWER BOOK. COLUMN A COLUMN B 1. .1 1. .2
1.3.5The shape of the cross ection of a wing of an aircraft Store hydraulic fluid under pressure Has no propeller for producing forward thrust The greatest distance between
1.4Complete the following sentences by using the words provided in the list below. Write only the word(s\ next to the question number (1.4.1
1.4.5\in the ANSWER BOOK. pitch angle; plane of rotation; viscosity index; flash point; volatile; supercharged engines; compression; angle of attack
1.4.1The angle between the chord line of the rotor blade and the relative airflow.
1.4.2Stress that tends to crush or press a material together.
1.4.3A measure of the rate of change of viscosity.
1.4.4A measure of the tendency of a liquid substance to vaporise under given conditions.
1.420
Q2— Section header —
2.1Define the term angle of attack (2\
2.2Describe, with the aid of a neat sketch how lift is generated on an aircraft wing. (7\
2.3Explain how a fixed wing aircraft is controlled about its vertical axis during flight (6\
2.4When an aircraft is designed, the loads which are likely to be applied to parts of the aircraft during operation are carefully computed and analysed by engineers. List FIVE types of stresses ( the load
Q3— Section header —
3.1Mention 10 areas sensitive to the formation of ice on an aircraft fuselage. (10\
3.2Give FOUR types of pumping mechanisms used in hydraulic pumps. (4\
3.3FIGURE 1 below shows a hydraulic gear type power pump. Label the different parts indicated by writing only the answer next to the letter (A F\ in the
Q4— Section header —
4.1Make a neat labelled sketch of a vane type pressure pump. (10\
4.2Give FIVE disadvantages of axial flow compressors in a gas turbine. (5\
4.3Mention FIVE factors that cause detonation. (5\ [20]20
Q5— Section header —
5.1Name the FOUR stok es of four stroke Otto cycle and indicate how the piston moves for each stroke
5.2Discuss the differences between gyroplane and helicopter with regard to the appearance
5.3Define the term viscosity (2\
5.4Name FOUR components of hydromatic propeller. (4\ [20] TOTAL SECTION B: 80 GRAND TOTAL: 10020