Prelim Exam

Compare and contrast the fundamental operating principles of turboprop and turbofan engines, highlighting their respective applications and performance characteristics.

Discuss the role of the propeller in a turboprop engine, including its design considerations and how it affects the engine's performance and efficiency.

Analyze the advantages and disadvantages of using a gearbox in turboprop engines, particularly in terms of power transmission efficiency and mechanical complexity.

How does a turbojet engine differ from a reciprocating engine in terms of basic operating principles and design?

What role does the compressor play in a turbojet engine, and how does it contribute to the overall efficiency of the engine?

Explain the fundamental operating principles of a ramjet engine, focusing on its reliance on high-speed airflow for compression and combustion.

Discuss the ideal operating conditions for a ramjet engine in terms of flight Mach number and altitude and explain how these factors influence engine performance.

Discuss the advantages and disadvantages of using ramjet engines in hypersonic flight applications compared to other propulsion systems, such as scramjets or rocket engines.

Describe the operating principles of a scramjet engine and explain how it differs from traditional air-breathing propulsion systems like turbojets or ramjets.

Discuss the key components of a scramjet engine and their respective roles in facilitating supersonic combustion and propulsion.