Weight and Balance
Use the aircraft specifications given below to answer the questions:
Basic operating weight 90,000 lb
Maximum zero fuel weight 120,000 lb
Maximum landing weight 140,000 lb
Maximum takeoff weight 170,000 lb
Fuel tank load 25,000 lb
Estimated fuel burn en route 15,000 lb
Field limited weight 160,000 lb
Obstacle limited weight 150,000 lb
Total Moment (takeoff) 92,437,500 lb-in.
LEMAC 600 in.
TEMAC 750 in.
Forward Cargo Station 200 in.
Aft Cargo Station 700 in.
1. What is the maximum allowable payload for this flight?
2. Assuming the aircraft is loaded with maximum allowable payload, what is the takeoff CG (inches)?
3. Assuming the aircraft is loaded with maximum allowable payload, what is the takeoff CG (percent MAC)?
4. Suppose we need to shift the CG to 20% MAC. How much weight should be moved from the aft cargo hold to the forward cargo hold?