Gulfstream has appointed a project pilot [FONT=Verdana, Arial, Helvetica, sans-serif]for the QSJ [/FONT]and is flying a[FONT=Verdana, Arial, Helvetica, sans-serif] variable pitch spike device to extend aircraft length during supersonic flight on a F-15.
This spike is similar to one designed by [/FONT][FONT=Verdana, Arial, Helvetica, sans-serif]John Morgenstern for Lockheed in the late 1990s.[/FONT]
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