Total drag questions
I have two drag related questions.
1) I have a vauge recollection that total drag in the climb is higher than in level flight due to the increase in lift associated induced wing tip drag. Anyone confirm this and / or got any idea as to what the percentage increase in drag is in a low rate (say 500 ft/min) climb approaching say 35,000 feet vs level flight at 35,000 feet.
The only figures I have are for a 737 - 800 @ 70 Tonnes FL 350 at minimum drag speed (0.74 mach).
For this condition the total drag is 8,750 pounds.
2) The same Boieng chart shows the total drag curve at all speed ranges. The level of drag at mach 0.8 is the same as mach 0.67 for the level flight 35,000 feet 70 Tonne 737).
The second question is can I assume the total drag in a climb at mach 0.8 is the same as the total drag in the climb at 0.67?
Thanks in advance