Aircraft Propulsion, 2nd Edition

APPENDIX K 10-Minute Quiz: Closed books and notes

Quiz No. 1

1. Draw a complete Rayleigh line on a T-s diagram and identify its branches, Mach numbers.
2. Draw a complete Fanno line on a T-s diagram and identify its branches, Mach numbers.
3. Draw an ideal Brayton cycle on a T-s diagram and write its thermal efficiency.
4. Draw an ideal Carnot cycle on a T-s diagram and write its thermal efficiency.

Quiz No. 2

1. Write the perfect gas equation and define the variables/constants in the equation.
2. What is the density of air at sea level (give a ballpark value in any unit)? What is the absolute static pressure at sea level (give the value in any unit)?
3. Define a calorically perfect gas.
4. Define a thermally perfect gas.
5. Write the Bernoulli equation and identify its terms and limitations.

Quiz No. 3

1. Write the first law of thermodynamics for a system.
2. What are the dimensions of specific heat at constant pressure, c_p?
3. What are the dimensions of the coefficient of viscosity, μ?
4. Define Newton’s law of friction in a fluid.
5. Define a Newtonian fluid.
6. What do we mean by continuum?
7. What is the definition of “mean-free path” in a gas?
8. How does the mean-free path in air vary with altitude?

Quiz No. 4

1. What is the definition of Reynolds number and what does it mean?
2. What is the definition of Mach number and what does it mean?
3. What are the dimensions of the gas constant, R?
4. How do gas constants, R₁ and R₂, in two different (perfect) gases relate to each other?
5. How does speed of sound (wave) propagation ...