PARIS goes to 60,000 feet, without leaving the ground
The Paper Aircraft Released Into Space (PARIS) team took a day trip to QinetiQ in Farnborough yesterday in order to use a hypobaric chamber to test the plane's release mechanism. The chamber is a pleasingly old-school lump of iron which is controlled not with some la-di-dah user interface but with large, red-painted wheels. …
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Pushing The Envelope...
PARIS joins the Ten Mile High Club. Neat.
Better yet...
... apparently there's going to be a video of it!
I'll get me coat.
and even better
This one has a couple of technical chaps involved, so one of them might hold the camera in a nice steady manner.
Pardon
Perhaps you shouldn't be relying on Boyle's Law (p*V=constant), instead try the combined gas law (p*V/T=constant) and account for temperature. Since temp is not going to be constant between sea level (~295 K) and 60,000 feet (~217 K) you might not climax as early as you'd like, not that I think PARIS would mind. Yes, it'll be cold but you won't have trouble keeping it up, you also might want to use a dry gas to prevent condensation and icing.
Re: Pardon
Hello,
We were worried about condensation, but aren't now. And some form of heating device might be involved to try and keep a constant temperature...
Lester will reveal all later.
cheers
john
isothermal
A heater is an interesting concept but I still wonder if the isothermal approach is the best. It might be better to try an adiabatic (isentropic) pressure calculation that doesn't consume precious battery power on a nichrome wire.
Returning the favour
Nice to see PARIS getting the air sucked out of her...
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