For an aircraft wing exceeding critical speed, which consequence occurs according to the Prandtl-Glauert transformation?

💡 Explanation

Wave drag abruptly increases because the Prandtl-Glauert transformation predicts a singularity in pressure distribution due to the onset of transonic flow and shockwaves, rather than drag reducing; therefore significantly wave drag increases because that directly relates to onset of shockwaves disrupting smooth airflow.

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