Weight and Balance Flashcards
Given:
Total weight……………..4,137 lb
CG location………………station 67.8
Fuel consumption…….13.7 GPH
Fuel CG…………………….station 68.0
After 1 hour 30 minutes of flight time, the CG would be located at the station
67.79.
The CG of an aircraft can be determined by which of the following methods?
Dividing total moments by total weight.
Given:
Weight A-155 pounds at 45 inches aft of the datum
Weight B-165 pounds at 145 inches aft of datum
Weight C-95 pounds at 185 inches aft of the datum
Based on this information, where would the CG be located aft of the datum?
116.8 inches.
Given:
Weight A-140 pounds at 17 inches aft of the datum
Weight B-120 pounds at 110 inches aft of datum
Weight C-85 pounds at 210 inches aft of the datum
Based on this information, where would the CG be located aft of the datum?
96.89 inches.
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
allowable useful load is decreased.
(Refer to Figure 38.)
Given:
Empty weight (oil is included) 1,271lb
Empty weight moment (in-lb/1,000) 102.04
Pilot and copilot……..360 lb
Cargo……………………..340 lb
Fuel………………………..37 gal
Yes, the CG will remain within limits.
Given:
Weight A-175 pounds at 135 inches aft of the datum
Weight B-135 pounds at 115 inches aft of datum
Weight C-75 pounds at 85 inches aft of the datum
The CG for the combined weights would be located how far aft of the datum?
118.24 inches.
(Refer to Figure 38.)
Given:
Empty weight (oil is included) 1,275lb
Empty weight moment (in-lb/1,000) 102.05
Pilot and copilot…………390 lb
Rear seat passenger……145 lb
Cargo………………………….95 lb
Fuel…………………………….35 gal
Yes, the weight and center of gravity is within allowable limits.
Given:
Total weight……………..3,037 lb
CG location………………station 68.8
Fuel consumption…….12.7 GPH
Fuel CG…………………….station 68.0
After 1 hour 45 minutes of flight time, the CG would be located at the station
68.83.
Ramp Weight is defined as
Zero Fuel Weight plus usable fuel.
(Refer to Figure 38.)
Given:
Empty weight (oil is included) 1,271lb
Empty weight moment (in-lb/1,000) 102.04
Pilot and copilot…………260 lb
Rear seat passenger……120 lb
Cargo………………………….60 lb
Fuel…………………………….37 gal
within the CG envelope.
Given:
Weight A-175 pounds at 135 inches aft of the datum
Weight B-135 pounds at 115 inches aft of datum
Weight C-75 pounds at 85 inches aft of the datum
Based on this information, the CG would be located how far aft of datum?
100.2 inches.
(Refer to Figure 38.)
Given:
Empty weight (oil is included) 1,271lb
Empty weight moment (in-lb/1,000) 102.04
Pilot and copilot…………400 lb
Rear seat passenger……140 lb
Cargo………………………….100 lb
Fuel…………………………….37 gal
Yes, the weight and CG are within limits.
An airplane is loaded to a gross weight of 4,800 pounds, with three pieces of luggage in the rear baggage compartment. The CG is located 98 inches aft of datum, which is 1 inch aft of limits. If luggage which weighs 90 pounds is moved from the rear baggage compartment (145 inches aft of datum) to the front compartment (45 inches aft of datum), what is the new CG?
96.13 inches aft of datum.
If all index units are positive when computing weight and balance, the location of the datum would be at the
nose, or out in front of the airplane.
