Quote:
On 2002-04-25 12:31, Russ wrote:
I don't have all of the details. That is just the explanation we were given by the announcer for verticle manuvers being done over grass. I would think thermal stress would be a possibility however, as the regular jet wash you mention is tangental to the concrete and the Harrier perpendicular. You get more heat soak from a vertical jet wash hovering to land/takeoff. Who knows? I have not studied it at all so all of this could be urban folk lore. [img]/phpBB/images/smiles/icon_smile.gif[/img]
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If it was at Oshkosh they don't allow VTOL aircraft on the runways because of all the crud they tend to leave scattered about. FOD is a very serious matter with all of the vintage and jet aircraft flying during the daily airshows during AirVenture.