Question

which layer of the atmosphere is ideal for flying jets aircrafts?why?

Answer 1

Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. The stratosphere is very dry; air there contains little water vapor. Because of this, few clouds are found in this layer; almost all clouds occur in the lower, more humid troposphere.

Answer 2

usually jet planes flies through the stratosphere because above the stratosphere lies mesosphere where the temperature decrease with -90°c and so aircrafts are bearable of more than pressure of -80°c