Kathy, Mike and I are have to make three different
rockets, but the only fuel we’ve got is water.
Ellen and Iain have to make parachutes that can bring
our rockets and their payload – a raw egg –
safely back to Earth.
Spend a happy day fiddling around with various bits
and pieces trying to design something that might work
for a steam rocket. A slow start to day one with some
nice pieces to camera with us all up on the hill by
the disused electricity pylons. An end of series feeling
Manage to find a threaded tube and adapters so that
we can make up a sealed system. Also play around with
various end sealing flanges. One of these I try to drill
on the lathe so that there is a small hole in it for
the steam to come out. This was hard work as it was
a toughened bolt and very hard to cut (ruined three
of the cheap drills!). I took the bolt that was about
five centimetres long and sawed off head so that I had
a piece of threaded bar about three centimetres long.
This was put into the lathe and then centre drill out.
By the end of the day we have a basic rocket made out
of a steel tube about 30 centimetres long with a steel
screw top cap and adapters on the bottom (the engine)
end drilled with a one to one and half millimetre hole.
Added fins made out of the thick tin.