The picture above is just an
enhancement of the screenshot. It shows more clearly
the diagonal lines. It also shows the fact that the
image is of a lump with the diagonal lines
superimposed on it. The lines are caused by having a
long interval on the post-thrust integration part of
the flight.
The computer model calculates the
position of the rocket and then checks to see if it
has hit the ground yet. Once it has done so (ie the
height is at or below ground level) the flight is
terminated. If the time between each check for the
end of the flight is sufficiently large, these ridges
form. They can be eliminated by choosing a shorter
post-thrust time-slice.
Back to the Computer Model
Page 
