Fluid Mechanics Principles Quiz
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Questions and Answers

What is one advantage of a pulse jet engine mentioned in the text?

  • Efficiency at subsonic speeds
  • Lack of thrust control
  • Limited operating range
  • Low noise levels (correct)

    • Which type of pulse jet engine is specifically designed for simplicity and cheapness?

  • Ramjet
  • Valveless pulse jet (correct)
  • Turbojet
  • Valve pulse jet

    • What was the main purpose of the manned version of the V-1 flying bomb during World War II?

  • Bomb defusal missions
  • Air-to-air combat
  • Stealth attacks
  • Kamikaze-style attacks (correct)

    • What type of effect is the Kadenacy effect related to in internal combustion engines?

    <p>Airflow optimization</p> Signup and view all the answers

    What distinguishes the Heinkel He 178 in aviation history?

    <p>Being the first turbojet-powered aircraft</p> Signup and view all the answers

    Which of the following is a disadvantage of pulse jet engines according to the text?

    <p>Vibrations and fatigue</p> Signup and view all the answers

    What type of engine is a Turbojet?

    <p>Relies heavily on pressure generated by the exhaust duct</p> Signup and view all the answers

    Which type of engine is efficient at lower flight speeds?

    <p>Turboprop</p> Signup and view all the answers

    What type of engine has been optimized to drive a propeller?

    <p>Turboprop</p> Signup and view all the answers

    In which engine do the gases expand and rush through a nozzle at the rear?

    <p>Turbojet</p> Signup and view all the answers

    Which gasturbine engine uses a variable pitch propeller?

    <p>Turboprop</p> Signup and view all the answers

    What is a Turbofan engine sometimes referred to as?

    <p>Fanjet</p> Signup and view all the answers

    Who is credited with the Coanda effect?

    <p>Henry Coanda</p> Signup and view all the answers

    Which individual is known for formulating Bernoulli's Principle?

    <p>Daniel Bernoulli</p> Signup and view all the answers

    Who is considered the godfather of jet propulsion?

    <p>Hero Alexandria</p> Signup and view all the answers

    Which individual developed the Brayton's Cycle in the 1870s?

    <p>George Brayton</p> Signup and view all the answers

    Who devised a toy based on the reaction principle around 250 BC?

    <p>Hero (writer and mathematician)</p> Signup and view all the answers

    Which inventor is linked to the development of turbo-superchargers?

    <p>Dr. Sanford Moss</p> Signup and view all the answers

    What is the primary component that produces thrust in a turbofan engine?

    <p>Jet core</p> Signup and view all the answers

    In which type of aircraft are turboshaft engines commonly used?

    <p>Helicopters</p> Signup and view all the answers

    At what flight speed is a ramjet engine inefficient?

    <p>Transonic speeds</p> Signup and view all the answers

    What is the primary purpose of gasturbine engine station numbers?

    <p>Identify important points for engine performance and design</p> Signup and view all the answers

    Which engine powered the fastest air-breathing manned aircraft as of 2022?

    <p>Hybrid turboram jet engine</p> Signup and view all the answers

    How does a turbofan engine differ from a turboshaft engine?

    <p>A turbofan engine drives a shaft, while a turboshaft engine produces thrust.</p> Signup and view all the answers

    What is the purpose of the Thrust ratio in discussing by-pass engines?

    <p>Measures the thrust produced by the engine core exhaust compared to the thrust produced by the fan</p> Signup and view all the answers

    Which of the following brands of turbofan engines is NOT commonly encountered?

    <p>AIRBUS AERO ENGINES (AAE)</p> Signup and view all the answers

    What does the By-pass ratio in discussing by-pass engines refer to?

    <p>Refers to the ratio of incoming air that bypasses the core to the amount of air passing through the engine core</p> Signup and view all the answers

    What is the Fan pressure ratio in relation to by-pass engines?

    <p>Measures the pressure ratio of air leaving the fan to air entering the fan</p> Signup and view all the answers

    Which classification of bypass ratio indicates that a large amount of incoming air bypasses the core?

    <p>High by-pass ratio</p> Signup and view all the answers

    In a dual spool system, what does 'n1' typically represent?

    <p>Low pressure central shaft</p> Signup and view all the answers

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