Table 2: Optimized variables cruising pressure altitude pcruise and speed correction factor α with corresponding results of the time of flight and fuel burn for different objectives of optimization.
Objective |
Parameter |
MD-11F |
B777F |
Min. time |
pcruise |
210 hPa |
220 hPa |
α |
1.12 |
1.10 |
|
Time of flight |
19461s |
19667s |
|
Fuel burn |
44852 kg |
44715 kg |
|
Min. fuel burn |
pcruise |
220 hPa |
240 hPa |
α |
0.94 |
1.01 |
|
Time of flight |
19537s |
20403s |
|
Fuel burn |
44816 kg |
41151 kg |