Test 1 Review Flashcards
For any air-breathing engine, the power developed is a function of ____.
The heat released per pound of air consumed by the engine.
What primarily determines the power output of an air-breathing engine?
Air consumption capacity.
In a well-designed engine, mechanical efficiency should be around ____.
85%
The efficiency of converting the chemical energy of a fuel into shaft power can be visualized by____-
The Otto cycle.
How does a combustion engine produce work?
By the pressure acting on the piston.
The heat released per pound of air depends on _____.
The heating value of the fuel. For gasoline, this is ~ 18,5000 BTU/lb.
What is the quantity of charge?
The amount of air-fuel mixture that can be put into the cylinder.
What is the von Karman line?
The boundary between Earth’s atmosphere and outer space. It is the altitude where aerodynamic forces can no longer provide support to maintain alitude.
What is the one known empirical property of the standard atmosphere?
Temperature
Lift and drag components are____ and ____ to the relative wind respectively.
Perpendicular and parallel
Where do the lift and drag forces act?
The center of pressure.
