Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
43 Cards in this Set
- Front
- Back
|
The center of gravity of an aircraft is computed along the a. lateral axis. b. vertical axis. c. longitudinal axis. |
c. longitudinal axis. |
|
|
The center of gravity of an aircraft can be determined by a. dividing total arm by total moment. b. dividing total moment by total weight. c. multiplying total arm by total weight. |
b. dividing total moment by total weight. |
|
|
As the CG location is changed, recovery from a stall becomes progressively a. less difficult as the CG moves rearward. b. more difficult as the CG moves rearward. c. more difficult as the CG moves either forward or rearward. |
b. more difficult as the CG moves rearward. |
|
|
When an aircraft’s forward CG limit is exceeded, it will affect the flight characteristics of the aircraft by producing a. improved performance since it reduces the induced drag. b. higher stalling speeds and more longitudinal stability. c. very light elevator control forces which make it easy to inadvertently overstress the aircraft. |
b. higher stalling speeds and more longitudinal stability. |
|
|
An aircraft is loaded with the CG at the aft limit. What are the performance characteristics compared with the CG at the forward limit? a. The aft CG provides the highest stall speed and cruising speed. b. The aft CG provides the lowest stalling speed, the highest cruising speed, and least stability. c. Cruising speed is lower because of more induced drag created by the elevator or stabilizer being required to provide more lift with an aft CG. |
b. The aft CG provides the lowest stalling speed, the highest cruising speed, and least stability. |
|
|
An aircraft is loaded with the CG aft of the aft limit. What effect will this have on controllability? a. Stall and spin recovery may be difficult or impossible. b. A stall will occur at a lower airspeed, but recovery will be easier because of reduced wing loading. c. A stall will occur at a higher indicated airspeed due to the greater downloading on the elevator. |
a. Stall and spin recovery may be difficult or impossible |
|
|
What is the effect of center of gravity on the spin characteristics of an aircraft? a. A flat spin may develop if the CG is too far aft. b. If the CG is too far forward, spin entry will be difficult. c. If the CG is too far aft, spins can become high-speed spirals. |
a. A flat spin may develop if the CG is too far aft. |
|
|
What is the effect of center of gravity on the spin characteristics of a fixed-wing aircraft? If the CG is too far a. aft, a flat spin may develop. b. forward, a spin entry will be difficult. c. aft, spins can become high-speed spirals. |
a. aft, a flat spin may develop. |
|
|
The stalling speed of an aircraft will be highest when the aircraft is loaded with a a. high gross weight and aft CG. b. low gross weight and forward CG. c. high gross weight and forward CG. |
c. high gross weight and forward CG. |
|
|
As the CG moves aft, an aircraft becomes a. less stable and less controllable. b. less stable, yet easier to control. c. more stable and controllable as long as the aft CG is not exceeded. |
a. less stable and less controllable. |
|
|
If the CG of an aircraft is moved from the aft limit to beyond the forward limit, how will it affect the cruising and stalling speed? a. Increase both the cruising speed and stalling speed. b. Decrease both the cruising speed and stalling speed. c. Decrease the cruising speed and increase the stalling speed. |
c. Decrease the cruising speed and increase the stalling speed. |
|
|
What is characteristic of the indicated airspeed if the CG is at the most forward allowable position and constant power and altitude are maintained? a. There is no relationship between CG location and indicated airspeed. b. Indicated airspeed will be less than it would be with the CG in the most rearward allowable position. c. Indicated airspeed will be greater than it would be with the CG in the most rearward allowable position. |
b. Indicated airspeed will be less than it would be with the CG in the most rearward allowable position. |
|
|
To maintain level flight in an airplane which is loaded with the CG at the forward limit, an additional download must be imposed on the horizontal stabilizer. This in turn produces a. an additional load which the wing must support. b. a lesser load that must be supported by the wing. c. a decrease in drag and results in a faster airspeed. |
a. an additional load which the wing must support. |
|
|
Under which condition is a forward CG most critical? a. On takeoff. b. On landing. c. When in an unusual attitude. |
b. On landing. |
|
|
If the nosewheel of an airplane moves aft during gear retraction, how would this aft movement affect the CG location of that airplane? It would a. cause the CG location to move aft. b. have no effect on the CG location. c. cause the CG location to move forward. |
a. cause the CG location to move aft. |
|
|
If the landing gear on an airplane moves forward during retraction, the total moment will a. increase. b. decrease. c. remain the same. |
b. decrease. |
|
|
Based on this information, the CG would be located how far aft of datum? Weight A120 lb at 15" aft of datum Weight B200 lb at 117" aft of datum Weight C75 lb at 195" aft of datum a. 100.8 inches. b. 109.0 inches. c. 121.7 inches. |
a. 100.8 inches. |
|
|
Based on this information, the CG would be located how far aft of datum? Weight D160 lb at 45" aft of datum Weight E170 lb at 145" aft of datum Weight F105 lb at 185" aft of datum a. 86.0 inches aft of datum. b. 117.8 inches aft of datum. c. 125.0 inches aft of datum. |
b. 117.8 inches aft of datum. |
|
|
Based on this information, the CG would be located how far aft of datum? Weight X130 lb at 17" aft of datum Weight Y110 lb at 110" aft of datum Weight Z75 lb at 210" aft of datum a. 89.1 inches. b. 95.4 inches. c. 106.9 inches. |
b. 95.4 inches. |
|
How should the 1,000-pound weight be shifted to balance the plank on the fulcrum? a. 15 inches to the right. b. 5 inches to the right. c. 5 inches to the left. |
b. 5 inches to the right. |
|
How should the 500-pound weight be shifted to balance the plank on the fulcrum? a. 10 inches to the left. b. 10 inches to the right. c. 30 inches to the right. |
b. 10 inches to the right. |
|
How should the 250-pound weight be shifted to balance the plank on the fulcrum? a. 2 inches to the left. b. 2 inches to the right. c. 2.5 inches to the left. |
a. 2 inches to the left. |
|
How should the 200-pound weight be shifted to balance the plank on the fulcrum? a. 2.5 inches to the left. b. 2 inches to the right. c. 2 inches to the left. |
a. 2.5 inches to the left. |
|
How should the 500-pound weight be shifted to balance the plank on the fulcrum? a. 1 inch to the left. b. 1 inch to the right. c. 4.5 inches to the right. |
a. 1 inch to the left. |
|
How should the 250-pound weight be shifted to balance the plank on the fulcrum? a. 8.4 inches to the right. b. 2 inches to the right. c. 2 inches to the left. |
c. 2 inches to the left. |
|
If 50 pounds of weight is located at point X and 100 pounds at point Z, how much weight must be located at point Y to balance the plank? a. 30 pounds. b. 50 pounds. c. 300 pounds. |
c. 300 pounds. |
|
If 50 pounds of weight is located at point X and 100 pounds at point Y, how much weight must be located at point Z to balance the plank? a. 150 pounds. b. 100 pounds. c. 50 pounds. |
c. 50 pounds. |
|
If 50-pound weights are located at points X, Y, and Z, how would point Z have to be shifted to balance the plank? a. 25 inches to the left. b. 2.5 inches to the left. c. 2.5 inches to the right. |
a. 25 inches to the left. |
|
Determine the condition of the airplane: Pilot and copilot 375 lb Passengers -- aft position 245 lb Baggage 65 lb Fuel 70 gal a. 185 pounds under allowable gross weight; CG is located within limits. b. 162 pounds under allowable gross weight; CG is located within limits. c. 162 pounds under allowable gross weight; CG is located aft of the aft limit. |
a. 185 pounds under allowable gross weight; CG is located within limits. |
|
Determine the condition of the airplane: Pilot and copilot 400 lb Passengers -- aft position 240 lb Baggage 20 lb Fuel 75 gal a. 157 pounds under allowable gross weight; CG is located within limits. b. 180 pounds under allowable gross weight; CG is located within limits. c. 180 pounds under allowable gross weight, but CG is located aft of the aft limit. |
b. 180 pounds under allowable gross weight; CG is located within limits. |
|
Determine the condition of the airplane: Pilot and copilot316 lb Passengers Fwd position 130 lb Aft position 147 lb Baggage 50 lb Fuel 75 gal a. 197 pounds under allowable gross weight; CG 83.6 inches aft of datum. b. 163 pounds under allowable gross weight; CG 82 inches aft of datum. c. 197 pounds under allowable gross weight; CG 84.6 inches aft of datum. |
a. 197 pounds under allowable gross weight; CG 83.6 inches aft of datum. |
|
|
With respect to using the weight information given in a typical aircraft owner’s manual for computing gross weight, it is important to know that if items have been installed in the aircraft in addition to the original equipment, the a. allowable useful load is decreased. b. allowable useful load remains unchanged. c. maximum allowable gross weight is increased. |
a. allowable useful load is decreased. |
|
|
What is the maximum weight that could be added at Station 130.0 without exceeding the aft CG limit? Total weight 2,900 lb CG location Station 115.0 Aft CG limit Station 116.0 a. 14 pounds. b. 140 pounds. c. 207 pounds. |
c. 207 pounds. |
|
|
What is the maximum weight that could be added at Station 150.0 without exceeding the aft CG limit? Aircraft weight 5,000 lb CG location Station 80.0 Aft CG limit Station 80.5 a. 70.0 pounds. b. 69.5 pounds. c. 35.9 pounds. |
c. 35.9 pounds. |
|
|
How much weight could be added at Station 160 without exceeding the aft CG limit? Total weight 8,300 lb CG location Station 90.0 Aft CG limit Station 90.5 a. 59.7 pounds. b. 16.5 pounds. c. 13.9 pounds. |
a. 59.7 pounds. |
|
|
How much weight could be added at Station 120 without exceeding the aft CG limit? Total weight 9,500 lb CG location Station 90.0 Aft CG limit Station 90.5 a. 61.0 pounds. b. 110.5 pounds. c. 161.0 pounds. |
c. 161.0 pounds. |
|
|
What is the location of the CG if 90 pounds are removed from Station 140? Total weight 6,230 lb CG location Station 79 a. 79.9 b. 78.1 c. 77.9 |
b. 78.1 |
|
|
What is the location of the CG if 60 pounds are removed from Station 70? Total weight 8,420 lb CG location Station 85 a. 85.1 b. 84.9 c. 84.1 |
a. 85.1 |
|
|
What is the location of the CG if 146 pounds are removed from Station 150? Total weight 7,152 lb CG location Station 82 a. 83.4 b. 81.3 c. 80.6 |
c. 80.6 |
|
|
What would be the new CG location if 135 pounds of weight were added at Station 109.0? Total weight 2,340 lb CG location Station 103.0 a. Station 103.3. b. Station 104.2. c. Station 109.3. |
a. Station 103.3. |
|
|
How much weight must be shifted from Station 150.0 to Station 30.0 to move the CG to exactly the aft CG limit? Total weight 7,500 lb CG location Station 80.5 Aft CG limit Station 79.5 a. 68.9 pounds. b. 65.8 pounds. c. 62.5 pounds. |
c. 62.5 pounds. |
|
|
Could 100 pounds of weight be shifted from Station 130.0 to Station 30.0 without exceeding the forward CG limit? Total weight 2,800 lb CG location Station 120.0 Forward CG limit Station 117.0 a. No; the new CG would be located at Station 116.89. b. No; the new CG would be located at Station 116.42. c. Yes; the new CG would be located at Station 117.89. |
b. No; the new CG would be located at Station 116.42. |
|
|
Could 100 pounds of weight be shifted from Station 30.0 to Station 120.0 without exceeding the aft CG limit? Total weight 4,750 lb CG location Station 115.8 Aft CG limit Station 118.0 a. Yes; the CG would remain at Station 115.8. b. No; the new CG would be located at Station 118.15. c. Yes; the new CG would be located at Station 117.69. |
c. Yes; the new CG would be located at Station |
