We used to sail Albacores out of the marina at the south end of the runway at National, and in the summer there is often no wind in the morning. So the game was to catch the tip vortices from landing aircraft. They would either knock a boat flat or send it planing across the water for a good distance, depending upon how the vortex landed on it. They would also set up little water spouts where they touched down on the surface. Lots of energy, like there was any doubt!
On Mar 18, 2017 8:27 AM, "Floyd Thursby via Mercedes" <mercedes@okiebenz.com> wrote: > Back in the late 90s i took a BA flt BOS-LHR on a 747, first class on the > upper deck. Pilots left the door open the whole flight, taxi, takeoff, > etc. and invited us in to come visit "once it is safe to move around the > cabin." Young pilots too, I was kinda surprised. I sat with them for > quite some time over the North Atlantic looking at stars out the windows. > It was fun. > > On the wake turbulence aspect, that is related to lift and how an airplane > wing actually works -- it causes a circulation of air around the wing when > it is developing lift, and that circulating air rolls off the tip of the > wing (you can see the tip vortices when it is humid) and then turns > straight back and expands as it goes further back. You can see that effect > too when a big plane lands as it kicks up dust and stuff along the runway, > then will abruptly stop when lift stops. But that rotating air persists > for quite some time for quite some distance and can really mess up anything > that gets in it. I recall seeing a vid of a Lear Jet tucking up behind a > bigger jet (747 maybe) and then all the sudden FULL ROLL!!! It was at > altitude and the pilot was prepared for it, so it was a planned maneuver > but it was scary crazy to see that. > > --FT > > > On 3/18/17 9:29 AM, Kaleb Striplin via Mercedes wrote: > >> I remember when I was a kid they used to let you go up to the cockpit. >> Seems strange now. >> > > -- > --FT > Winston Churchill: > “Never give in--never, never, never, never, in nothing great or small, > large or petty, > never give in except to convictions of honor and good sense. > Never yield to force; never yield to the apparently overwhelming might of > the enemy.” > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
