STUDY GUIDE SUMMARY WITH SOLVED
QUESTIONS AND DETAILED VERIFIED
ANSWERS GRADED A+
◉Atmospheric pressure, temperature and air density . Ans: All decrease
with altitude increase
◉Effect of lower air density . Ans: Power output of the engine increases
◉Accelerated airflow . Ans: Static pressure decreases
◉Dynamic pressure . Ans: Increases when airflow is accelerated
◉Total pressure . Ans: Stays the same due to conservation of energy
when airflow is accelerated (subsonic, incompressible)
◉Subsonic aircraft wing lift production . Ans: Airflow over the top is
faster, resulting in decreased static pressure and airfoils deflect the air
mass downwards producing lift
, ◉Incorrect theory of lift production . Ans: Newton's third law
◉Magnus Effect for lift . Ans: Ball must be rotated to create localized
differences in velocity to deflect flow for lift
◉Primary cause of form drag . Ans: Pressure differential between the
front and back of an object, caused by flow separation
◉Lowest Coefficient of Drag profile . Ans: Thin airfoil
◉Limitation to a laminar flow airfoil . Ans: Surface must be kept clean
and free of blemishes
◉Parasite drag impact when speed is doubled . Ans: Drag is increased
by a factor of 4
◉Reducing induced drag . Ans: Fly faster
◉Doubling weight impact on Induced Drag . Ans: Increases by a factor
of 4