Refer to Figure 54 on page 56.
How is the CG affected if radio and oxygen equipment weighing 35 pounds is added at station 43.8? The glider weighs 945 pounds with a moment of 78,000.2 pound-inches prior to adding the equipment.
Explanation
Correct answer: B. Moves 1.38 inches forward and remains within limits. First add the weight of the equipment to the glider weight. In this situation, 35 pounds added to 945 pounds = 980 pounds. To calculate the moment, multiply 35 pounds X 43.8 which equals 1533 to be added to the total moment (78,000 + 1533 = 79533.3). Now divide 79533.3/ total weight of 980 which equals 81.15. The previous CG point was 82.53 which is 78,000.2/ 945. Finally, subtract the new CG from the old CG- 82.53-81.15= 1.38. Finally the chart indicates that 81.5 (which is forward of the old CG) is still within limits.
