Results
Q1. The ratio of air to kerosene to give the greatest heat release during combustion is:
Correct answer is – 15:1
Q2. One advantage of an annular combustion chamber system is that:
Correct answer is – there are no flame propagation problems
Q3. Of the total airflow entering the combustion chamber the percentage that is mixed with the fuel and burnt is:
Correct answer is – 20%
Q4. The combustion chamber drain valve is closed:
Correct answer is – by combustion chamber gas pressure
Q5. A cannular combustion system is:
Correct answer is – a set of flame tubes enclosed in a common air casing
Q6. It is necessary to have a combustion drain system:
Correct answer is – to allow any unburnt fuel to drain after shutdown or a wet start
Q7. The purpose of the tertiary airflow created in the combustion chamber is to:
Correct answer is – reduce the gas temperature and cool the flame tube
Q8. A relight envelope:
Correct answer is – shows airspeed and altitude limitations for an in-flight restart
Q9. Swirl vanes in the combustion chamber:
Correct answer is – reduce the velocity of the airflow
Q10. The air entering the combustion chamber is divided; a small percentage is used in combustion, the rest:
Correct answer is – is used to cool both the gases exiting the chamber and the walls of the air casing
