Answers 100% Pass
What's the difference between an airfoil section and a wings platform? - ✔✔An airfoil
section is a side-view of the wing, amd the wing's planform is a top down view
What is the difference between mean camber line and the chord line? - ✔✔Mean
camber: Divides an airfoil section in half between then upper and lower cambers
Chord line: A straight line from the leading edge to the trailing edge
What are the two characteristics of a laminar flow boundary layer? - ✔✔- Good for high
speeds
- Leaves the wing surface at low speeds
Calculate the potential energy of an Archer weighing 2,500lbs if it is 0.5ft above the
ground - ✔✔1250lbs
Law of Conservation of Energy - ✔✔Energy cannot be created or destroyed
The amount of yawing moment that the rudder can generate is affected by which two
factors? - ✔✔Aerodynamic force / Distance from C.G. to rudder
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, A 100lb. weight is dropped from a height of 20ft. What is the Ep before it is dropped? -
✔✔2,000ft/lbs
What is the KE of the same weight at the moment of impact after falling 20 feet? -
✔✔2,000ft/lbs
In order to increase CL, high lift devices... - ✔✔Any of these answers
AOA is measured between the - ✔✔Chord line and relative wind
Vortex generators increase lift by - ✔✔adding kinetic energy to the boundary layer
An increase in air density affects the air density by - ✔✔Decreasing
Slots increase energy in the boundary layer by allowing air from below the wing to slip
through the wing during high AOA flight - ✔✔True
Fowler flaps increase a wings - ✔✔camber and surface area
The momentum change theory of lift production states that by accelerating airflow
downward, lift is created. This is explained by... - ✔✔Newton
The earth's atmosphere contains a constant amount of nitrogen, oxygen, and other gases
but increases in density with an increase in altitude - ✔✔False
The standard atmospheric values are - ✔✔- 15 degrees Celsius
- 59 degrees Fahrenheit
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