ICE powered aircraft overcome this challenge by being designed to take in a sufficient amount of air so that the engines can provide enough power at the altitudes the aircraft is designed to fly at. The SR-71 blackbird took this a step further by having a jet engine which [dynamically changes its configuration mid-flight](https://en.wikipedia.org/wiki/Pratt_%26_Whitney_J58#/media/File:SR71_J58_Engine_Airflow_Patterns.svg) so that it could operate effectively both at low altitudes at low speeds, as well as at high altitudes and high speeds.
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