Quote:
Originally Posted by Flutter
Philip.ed:
The word you are looking for is wingtip vortices.
A wing creates lift by pushing air downwards. Behind the wing tip there is an interface between air that has been pushed down, and "untouched" air. This shear results in a vortex flow trailing behind the aircraft.
Flutter
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actualy lift is created by air being forced to flow over two different distances. since all things in nature which were disturbed in their original flow try to restore order and harmony, this is also valid for air > thus air from lower part of the wing, which has higher pressure wants to balance with air on the upper surface which has lower pressure > and so creating lift force. since the wing is not indefinite, but very finite plane, air from bellow and above do meet in one point, and this point is of course the wingtip. The drag produced is called induced drag, and there are some vortices, but their force depends on weight. In airplane of such relatively small size the vortice is so weak, that it is almost non existant. On the pilot size debate > I would agree that the a) head is too small (we would need to see the whole body i.e. the 3d model of the pilot) or b) the team has used the lowest position of the seat (this happens when you have original drawings of the plane and some information are missing). I tend to go with the small head...here is the example. Please note, that the seat was adjustable for height, so we were always looking through the centre of the gunsight, which was actualy good old K-14 from the P-47 also used in Yugoslav air force.
on the scale debate - I would suspect that the roads have only one LOD, and that this is the problem (they seem to have same size regardless of the distance). I will stand corrected by Oleg or Luthier if I'm wrong.
EDIT - I did some quick check in the Corel Draw. I compared two known sizes, i.e. the head and the wheel. It seems that the head in SOW as it stands now is aprox 1/2 too small.
or closer
note> the lenght of the line is same on the head of the pilot and wheel on each individual shot.