The used approximations are not very exact. Because of
that it is possible that the real total weight is higher than
the required 200 kg. To keep the LSW lower than 200kg
will probably be the most difficult challenge during the
following design stages. A reason for that may also be
the fact that the choice of the thicknesses for the material
is based on sense. So the thicknesses may change
significant after a more detailed view on the strength
parameters.
During the design process it turned out that the area for
the solar panels should be bigger so that the engine can
run with maximum power. Another possibility is to
install a smaller engine.