What is the standard altitude in kilometers for the Kármán line accepted by the FAI?
Answer
100 kilometers
The internationally recognized standard for the Kármán line, officially accepted by the Fédération Aéronautique Internationale (FAI), is set precisely at 100 kilometers above mean sea level. This figure is cited as the global standard and the standard used for many purposes, including discussing aerospace treaties and defining when a vehicle's trajectory is predominantly governed by orbital mechanics rather than relying on atmospheric lift. Although other standards exist for specific national purposes, 100 km remains the widely accepted international benchmark derived from Von Kármán's initial calculations.
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