Mathew Lippincott’s blog on design and DIY aerospace
October 20th, 2010

kite balloon futures and histories

To follow on my love of kite balloons, and the kite balloon action at the grassroots mapping list.  here are a few awesome kite balloon histories.

No-tech magazine, Airships Past and Present, 1908.  Look especially for details on Parseval and Sigsfeld, drachenballoon developers. There is an inflatable airship designed for logging.  then in Belgium, horse-borne air war.  In america, an early aircraft carrier with a balloon dome. Glamor shots reveal a counterweight in the rigging. The priapism of war.

airshipspastpres00hildrich-107

October 1st, 2010

October 25, Natalie Jeremijenko in Portland, OR

IT’S FREE

http://www.pdx.edu/art/mfa-lecture-series

September 24th, 2010

kite balloon construction ideas with boston folks

Sketch of an elliptical kite balloon like the Allsopp Helikite constructed with a rolling heat sealer (on left).

Jeffrey Warren and I discussed these kite balloon designs when I was at his studio.  Southern Balloon Works, where a lot of spherical Grassroots Mapping balloons come from, makes a similar kite balloon with a drag rather than lift structure for stability. John Borden of Peace River Sudios loaned me the roller sealer. I showed Jeffrey, he found one for sale at retail, and Dan Beavers found an online store that sells roller sealers.

September 24th, 2010

Open Hardware Summit Notes

Met and ran into fellow grassroots mapping folks Bonny Gregory and Cesar Harada, and my old roommate Isaac Ravishankara.

Bruce Perens & John Wilbanks echoed each other:

“IP is a disease, good open licensing and prior art databases can innoculate the future against it.

John Wilbanks

freedom doesn’t come from the barrel of a license.  decide on the values underlying the license.

Nina Paley:

“Copyright is like kids, you don’t own ‘em.”

Business Forum

Successful Open hardware projects are awesome but their businesses are boring- 40% markup, good relationship with shipping, quality, trademark protection, insurance, accounting.

Had a great talk with Britta Riley, Jeffrey Lipton, and Chris from Netduino about licensing mechanical and analog devices.  I’ve been thinking of  a way to frame the problem, and I think I’ve got a helpful case-study, the miter box:

Designed to replicate exact and consistant angles, a new miter box can be cut using an existing miter box as a guide.  It is also a simple enough object that whenever it’s used, it’s ability to copy itself is implied.  Instructions can be written, but they really aren’t necessary.  I think it can be said that the miter box  contains it’s own instructions.

I don’t know what our open licenses should look like, but I think they aught to account for objects like a miter box.

Talked to Chris Anderson about flying safety and PET film.  In Grassroots Mapping we’ve been discussing making to PET  balloons, and we’re trying to decide between aluminized (less helium loss) and uncoated PET for balloons. Chris’s company DIY Drones sells a mylar UAV blimp kit.   Chris’s advice: go with uncoated PET, aluminized balloons can short out power lines if they break free.

June 25th, 2010

Solar Blimp to Cross English Channel

While I’m preparing for a workshop where we’ll build some solar hot-air balloons, a very different solar aerostat, running of photovoltaics, is set to cross the English Channel!  As thin-film solar cells improve and energy prices, rise, I bet these things will be a really big deal.

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