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1.2Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only 'True' or 'False' next to the question numbe (1.2.1
1.2.5\n the ANSWER BOOK.
1.2.1The jet turbine engine operates much like a toy balloon
1.2.2he ngle of attack changes during the flight , but the angle of incidence remain fixed
1.2.3The true monocoque construction has internal bracing and can be compared to the structure forming a cocoon or eggshell where all the load is carried by the shell
1.2.4The injection carburettor differs from the float type carburettors in that it is not fitted with a f loat chamber nor does the choke or ventur depression act
1.2.5
1.3Choose a term from CO LUMN B that matches a description in COLUMN A. Write only the letter (A F\ next to the question number (1.3.1
1.3.5\in the ANSWER BOOK. COLUMN A COLUMN B
1.3.5Heat the steel to just below its critical point Replenishes the syst em fluid when needed Has the same appearance as surface corrosion
1.4Choose a word or words from the following list to match each description below. Write only the answer next to the question number (
1.4.5\in the ANSWER BOOK. disc area; case hardening; accumulators; compression; angle of incidence; blade loading; angle of attack, torsion
1.4.1Stores hydraulic fluid under pressure
1.4.2The circular area swept by th e rotor
1.4.3he angle formed between the chord line and the relative airflow
1.4.4Cool the metal in the furnace
1.4.520
Q2— Section header —
2.2Name THREE advantages of true monocoque construction over s emi monocoque constru ction. (3\
2.3List TWO case hardening heat treatment rocesses that can be used
2.4After assembly of an aircraft the structure must be checked for correct alignment. One of these checks is checking engine alignment
2.5With the aid of a sketch, illustrate the fineness of an aircraft main wing (aerofoil\ (5\ [20] 1104110220
Q3— Section header —
3.2State FIVE hydraulically operated aircraft systems (5\
3.3Briefly discuss the purpose of the following components used in a pneumatic system
3.3.1Air filter
3.3.2Moisture separator
3.3.3Selector valves
3.3.4
3.4Explain the difference between anti icing and de icing
Q4— Section header —
4.1The two principal types of compressors currently being used in turbojet aircraft engines are centrifugal flow and axia flow compressors
4.2List FOUR advantages of axial flow compressors (4\
4.3Name FIVE advantages of fuel injection systems (5\
4.4Mention the supercharged engines that can be opened to full throttle at sea evel (1\
4.5After an engine is installed on the airframe it is necessary to complete a test of engine performance called a ground run. State SEVEN precautions to be taken before completi ng a test of engine performan
Q5— Section header —
5.1Briefly explain the operation principles of hydromatic propellers (10\
5.2Name FOUR controls in the helicopter that the pilot must use during the flight (4\
5.3State FOUR secondary effects of superchargin (4\
5.4What is the f unction of the collective cockpit control as used in a conventional helicopter? (2\ [20] TOTAL SECTION B GRAND TOTAL: 8020