Sure enough, it’s Kathy’s design that works
the best out of the three, and it's the one we decide
to go with. But what about the payload? Iain and Ellen
have spent the last two days designing a parachute and
release mechanism that will allow the egg and camera,
once launched, to fall back to the ground without breaking.
All that needs to be done now is to knit their parachute
and its payload together with the chosen rocket design.
Then it's simply a matter of tweaking things so that
the parachute’s released just as the rocket reaches
its maximum height.
Fortunately Kathy’s water-pressure rocket is
one that can be launched over and over again without
too much fussing about. This allows for plenty of trial-and-error
launches. After 50 or so of these hilarious test flights,
we’re ready to film an attempt at launch and landing.
As things turn out, it couldn’t have worked out
more perfectly. On our first filmed attempt, the parachute
is released at just the right moment, and the egg falls
slowly to the ground … unbroken. Who said this
was Rocket Science! Our combined efforts produce another
hard-won success - a rather satisfying ending to this
fourth Rough Science series. Here's to Rough Science