AVIA 31 MIDTERM 1 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Question:
1. MULTIPLE CHOICE/TRUE FALSE
According to the general gas law, if you increase
pressure, the density will:
Answer:
Increase
Question:
2. Which of the following has the greatest influence on
aircraft aerodynamics and performance?
Answer:
Density
Question:
3. A well streamlined shape can have what percentage of
the drag of a flat plate normal (perpendicular) to the
airstream
Answer:
5%
Question:
4. The moment coefficient is primarily a function of
Answer:
Shape of the mean camber line
Question:
5. Dimensions of an airfoil are related to what
measurement?
Answer:
Chord
Question:
6. Approximately how much of an increase in lift coefficient
can a combination of well designed leading edge
devices and trailing edge flaps provide over a plain
airfoil?
Answer:
100% or more
, Question:
7. Increasing aspect ratio increases induced drag
Answer:
False
Question:
8. A propeller generates an equal amount of thrust at each
span-wise point along each blade
Answer:
False
Question:
9. A typical "modern" propeller (typical for current General
Aviation use) is approximately how efficient?
Answer:
85%
Question:
10. Wing mounted engines with propellers do not affect the
lift generated by the wings to which they are mounted.
Answer:
False
Question:
11. SHORT ANSWER
What are the two forms of energy in an airstream?
BONUS: How are they measured?
Answer:
Kinetic and Potential Energy
BONUS: Kinetic is measured in dynamic pressure and potential is measured in
static pressure.
Question:
12. Name the two primary types of wind tunnels:
Answer:
Open and closed
Question:
13. What information is necessary to measure airspeed?
Answer:
Stagnation pressure which is composed of dynamic and static pressure.
AND CORRECT ANSWERS
Question:
1. MULTIPLE CHOICE/TRUE FALSE
According to the general gas law, if you increase
pressure, the density will:
Answer:
Increase
Question:
2. Which of the following has the greatest influence on
aircraft aerodynamics and performance?
Answer:
Density
Question:
3. A well streamlined shape can have what percentage of
the drag of a flat plate normal (perpendicular) to the
airstream
Answer:
5%
Question:
4. The moment coefficient is primarily a function of
Answer:
Shape of the mean camber line
Question:
5. Dimensions of an airfoil are related to what
measurement?
Answer:
Chord
Question:
6. Approximately how much of an increase in lift coefficient
can a combination of well designed leading edge
devices and trailing edge flaps provide over a plain
airfoil?
Answer:
100% or more
, Question:
7. Increasing aspect ratio increases induced drag
Answer:
False
Question:
8. A propeller generates an equal amount of thrust at each
span-wise point along each blade
Answer:
False
Question:
9. A typical "modern" propeller (typical for current General
Aviation use) is approximately how efficient?
Answer:
85%
Question:
10. Wing mounted engines with propellers do not affect the
lift generated by the wings to which they are mounted.
Answer:
False
Question:
11. SHORT ANSWER
What are the two forms of energy in an airstream?
BONUS: How are they measured?
Answer:
Kinetic and Potential Energy
BONUS: Kinetic is measured in dynamic pressure and potential is measured in
static pressure.
Question:
12. Name the two primary types of wind tunnels:
Answer:
Open and closed
Question:
13. What information is necessary to measure airspeed?
Answer:
Stagnation pressure which is composed of dynamic and static pressure.
