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Blk 1 Final 3
Questions to study for final
| Question | Answer |
|---|---|
| The angle between the chord line and the relative wind is the _____________ | Angle of Attack |
| When an airplane tends to return to its original position after the disruptive force is removed. It is said to have _________ static stability | Postive |
| The most often used lift-modifying device for airplanes is the | Wing Flap |
| When air is flowing at supersonic speeds the air acts like a ____________ fluid | Compressible |
| The most difficult flight regime for an airplane because part of the wing experiences subsonic and part is experiencing supersonic airflow is called _____flight | Transonic |
| A four cylinder engine has a cylinder bore of 3.5 inches and is 8.5 inches deep. Piston on bottom center the top of the piston is 4 inches from the bottom of the cylinder. What is the piston displacement | 173 inches |
| 4-3[-6(2+3) + 4}= | 82 |
| Express 7/8 as a percent | 87.5% |
| If the volume of a cylinder with the piston at bottom center is 84 cubic inches and the piston displacement is 70 cubic inches the the compressionratio is ___ | 6 to 1 |
| What is the speed of the spur gear with 84 teeth driven by a pinion gear with 14 teeth, turning 420 RPM. | 70 RPM |
| (-3 +2)(-12 -4) +(-4 + 6) x 2= | 20 |
| Leading edge slots are placed ahead of the ailerons for what reason | so during a wing stall the inboard part of the wing stalls first and the ailerons are still useable |
| Atmospheric pressure at any altitude is due to the weight of air above it, pressure ________ with increased altitude | decreases |
| Allowable takeoff gross weight is reduced for operations in humid areas. Why? | humid air is less dense than dry air |
| Which rotor system is used with a two blade main rotor | semi-rigid |
| Left and Right sides of the aircraft correspond to | how the pilot sets in the cockpit |
| Maximum weight of an aircraft is defines as | maximum authorized aircraft weight and its contents |
| Useful load of an aircraft is the | difference between the maximum gross weight and empty weight |
| What stability of an airplane involves the amount of time it takes for it to react to its static stability after it has been displaced form a condition of equilibrium | dynamic stability |
| Balance tabs and servo tabs move in the opposite direction of the flight controls trailing edge providing what? | a force that helps the flight control move |
| What in physics denotes both speed and sound of an object and the direction in which it is traveling | Velocity |
| In physics what are the factors necessary to determine power (3) | Force exerted, distance the force moves, and time required to do the work |
| The empty weight of an airplane is determined by | subtracting tare weight form the scale reading and adding the weight of each weighing point |
| Zero fuel weight is what? | maximum permissible weight of a loaded aircraft with passengers, crew, and cargo without fuel |
| To obtain useful weight data for purposed of determining the CG, it is necessary that an aircraft be weighed | in a level flight attitude |
Created by:
swarden