It is “ground effect” that causes an aircraft to glide above the runway until sufficient speed is lost for the cushion to decay and then allow it to touch down. Lift increases and resistance reduces near the ground in the zone less than one wing chord...
CITATION STYLE
Yun, L., & Bliault, A. (2012). Wings in Ground Effect: Ekranoplans and WIG Craft. In High Performance Marine Vessels (pp. 89–132). Springer US. https://doi.org/10.1007/978-1-4614-0869-7_3
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