I hope I convey my point probably, but why do planes go so many thousands of feet in the air? Is it faster that way, or could they achieve similar flight times at a lower altitude?
Does it have something to do with the curvature of the earth?
In: Engineering
1. Less air = use less gas to go fast
2. Although it takes extra energy to go up, much of that is recovered on the way down
3. It’s a little safer — if you lose power you have much longer to solve the issue or get to a runway
4. Quieter over houses
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