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
When jets were first tested, the pilots found that the engines became more powerful as they climbed higher. They had to throttle back to avoid going dangerously fast. Now jets fly at high altitudes to use less fuel.
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