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Brainteasers
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Oct. 4, 2010

Brainteasers
Interactive Quiz #152:
Master the Forces of the Universe

The aviator's universe exists inside that thin layer of nitrogen, oxygen and spent carbon surrounding the earth. How you maneuver through the ether determines aeronautical success. How you answer the following questions determines your score.

INSTRUCTIONS: Answer the questions as best you can, then click on the "Score my quiz answers" button to see your score and read the explanations. If you don't like your score the first time around, you can change some of your answers and resubmit. To get the most out of this quiz, we suggest you keep trying until you get a perfect score.

NOTE: When more than one answer is true, only the most complete, correct answer will be scored as correct. The answers are assumed to apply within the United States unless otherwise noted.

1. Consider basic airplane maneuvering and fill in the blank: The airplane rotates around three axes. They are the vertical, lateral and (_____).
a. Horizontal
b. Latitudinal
c. Longitudinal
d. Axis of evil
2. Motion around the vertical axis is called (_____).
a. Yar
b. Yaw
c. Yap
d. Yup
3. Motion, or rotation, around the airplane's lateral axis is called (_____).
a. Pitch
b. Roll
c. Bank
d. Slip
4. In a constant-altitude, constant-airspeed turn the pilot should increase the wing's angle of attack when rolling into the turn, because part of the horizontal lift has been diverted to vertical lift.
a. True
b. False
5. Fill in the blanks in this premise from the FAA's Airplane Flying Handbook: "The rate of turn at a given true airspeed increases as the angle of (_____) is (_____).
a. Bank, decreased
b. Incidence, decreased
c. attack, increased
d. Bank, increased
6. Picture this as you fill in yet more blanks: You're in a Cessna 172 (could be just about any small airplane except an Ercoupe). You roll into a coordinated, medium-banked turn -- say 30 degrees -- to the left. Hands and feet (ailerons and rudder) are working in perfect unison. The coordination ball is centered in Zen-like bliss. Once you've established the desired bank angle (30 degrees), you relax the aileron pressure but, for some weird, test-purpose reason, you continue to hold the same amount of left rudder pressure. This induces a (_____) turn, and the coordination ball moves (_____) of center.
a. Skidding, right
b. Slipping, right
c. Skidding, left
d. Slipping, left
7. Keep picturing yourself in the previous scenario. (If you found the Cessna 172 to be boring, switch to a Citabria and have some fun, already.) Now, increase the bank from medium to steep -- say, 60 degrees. To hold the 60-degree bank, without over-banking, you'll need to:
a. Increase aileron input.
b. Relax aileron pressure.
c. Apply opposite aileron pressure.
d. Relax elevator pressure.
8. Similar scenario as the previous question, only you've brought along a passenger who is not an instructor. You're at 5500 feet MSL. To increase bank beyond 60 degrees requires what? (Choose the best answer):
a. An aerobatic endorsement as per FAR 61.31(m)
b. At least a private pilot certificate
c. Supplemental oxygen
d. A parachute
9. Picture yourself as a CFI: dashing, well-dressed and willing to instruct for food stamps. You're aloft with a student who hasn't quite learned the feel for steep turns. Nearing 60 degrees of bank, the student lets the nose drop too low. Airspeed builds rapidly, and the wind howls as the world turns faster and faster ... ("Incredible, ain't it?") Choose the best initial corrective action:
a. Increase elevator backpressure.
b. Decrease bank angle.
c. Add opposite rudder while reducing power.
d. Scream at the student and then hit the silk.
10. Conventional, straight-wing, straight-tail, piston airplanes tend to pitch down in a stall. Easy to detect and recover. Some swept-wing, jet-powered, T-tailed airplanes may surprise the beginner kerosene pilot by pitching up in a stall. Fill in the missing word from the following statement in the FAA's Airplane Flying Handbook:
"... once the stall has developed and a large amount of lift has been lost, the airplane will begin to sink rapidly and this will be accompanied by a corresponding rapid increase in angle of attack. This is the beginning of what is termed a (_____) stall."

a. Accelerated
b. Whip
c. Dark
d. Deep

If you enjoyed taking this interactive quiz and would like to see more like it, go to the AVweb Brainteaser page. And if you thought it was unfair, confusing, or a waste of time, we'd like you to tell us that, too. And if you have an idea for a subject that you think would make a good future Brainteaser quiz, be sure to let us know.

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