On Thursday 19 April 2007 13:11, Curtis Olson wrote: > Allow me to submit two more photos for rigorous analysis ... :-) > > http://baron.flightgear.org/~curt/tmp/inverted_pass.jpg > http://baron.flightgear.org/~curt/Models/Current/Mariner40/Water/Source/img >_0789r.jpg > > Curt.
Nice try Curt, but no cigar:) The first pic shows artifacts in the sky around the aircraft and the shadows are obviously inverted - i.e. light source appears to be below and behind the aircraft but above and to the right of the person in the foreground:) There are also artifacts around the mariner - the thin white outline - and similar shadow inconsistencies. Heh, I think the lack of reflections is the biggest give-away here though:) Contrast this with the SU-26 pic where the shadows of the four people (one is just out of shot but you can see the shadow of the pole he's carrying) holding the poles suspending the ropes/cables that the SU-26 has just flown under is consistant with the shadows on the aircraft. The best bit of shadow to note is from the leading edge of the wing upon the side of the fuselage, which nicely lines up with the shadow of the wing leading edge on the ground. The shadow on the rudder is a little misleading as it suggests a different sun angle but this is due to rudder deflection - it's deflected towards the viewer. The shadow of the wing trailing edge is difficult to use for reference because of the trailing edge fillet. I couldn't find the rpm specs of the engine but a reduction gear is fitted - the prop isn't driven directly. Here's a vid of an SU-26 doing some low inverted stuff http://www.jasonpigdon.com/avaition/kairys.mpeg note that there appears to be a weir to be avoided on exit from the stunt:) LeeE ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Flightgear-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-users
