February 11th, 2010
I’ve been very busy with a trans-continental move and more… So I’m going to try to just post links regularly, rather than longer things.
Via Robert Fortner, who I met at Research Club: proto SMS for pilots, you can listen in.
Arduinos in the Upper Atmosphere, the trans-Atlantic Atlantic Halo they’re launching a test balloon soon if you’re in France/UK, help’em out! via Balloon-Sked:
Launch Date: 13/2/10
Launch Time: 15:00UTC
Launch Site: EARS, Cambridgeshire, UK (52.2511, -0.0927)
Payload: ATmega328 with Arduino bootloader on custom PCB, Radiometrix
NTX2 10mW 434.075Mhz radio, Lassen IQ radio, 3x DS18B20 Temp Sensors,
Photocell, Williamson peristaltic pump and 500ml ballast tank (ballast
= ethanol/methanol)
Balloon: 1500g He, pinhole (1.5mm) vent -> aim for float @ ~20km altitude
Tags: airplanes, arduino, Atlantic Halo, robert fortner, text messaging
Posted in balloons, the real wold | No Comments »
December 31st, 2009

I know I’ve been talking a lot about mutoscopes (that thing took all my time), but I really will get back to balloons. Here’s a shot of a new design I’m working on for short hops, it’s had two flights with two different riggings since september. it’s a tetrahedron flying upside down. I’m going to try to illustrate a second chapter to my balloon building guide in January, focusing on the short hop balloon. There won’t be many flights though, because I’m moving to Portland. That will be my last design for low flight and line control- next year I’ll be putting my ham license to good use on some higher altitude stuff.
Don’t hold me to it, but I want to get into automated flight control of solar hot air, with temp and light sensors inside a balloon and a controlled valve.
The rest of the time I’ll be composting, looking for a job in waste management, and trying to start a small business. More on all that later, but the short of it is I want to work towards creating new blue collar jobs that manage enclosed resource cycles- i.e. engineering is great, but you’ll still need a plumber in space.
Posted in balloons, future, the real wold | No Comments »
November 20th, 2009
Kris de Decker produces some of the most insightful and well-researched articles on technology anywhere on the internet. He has a simple premise- novel “high-tech” solutions aren’t always that great. Don’t give up on established, simple, and efficient solutions to human problems. He just linked back to me when I pointed him to KMODDL, and I wanted to share some stuff he’s posted, since it’s been sitting in my “to post” folder since August:
Kris often finds works from another age whose techno boosterism is familiar, but whose object is odd to a contemporary reader. From the height of airship mania ( Zeppelin’s commercial air transport service was established a year later) and before airplanes proved themselves in the skies, Airships Past and Present (1908) is a fantastic snapshot of globalized tinkering and ingenious innovations:
In 1792, Uyton de Morveau recieved official instructions from Napoleon to develop military balloons. Morveau developed a team with chemist Lovoisier and physicist Coutelle, and together they developed a novel hydrogen generator that used a hot iron with steam passing over it, and a novel means of sealing silk balloons with 5 layers of linseed oil based varnish. The varnish was particularly effective, holding hydrogen in the balloon for upwards of 2 months, but the recipe is lost to history. The envelope of a hydrogen balloon capable of carrying 2 passengers to 1600ft would weigh only 180-200lbs, in line with early 20th century numbers (134).
OR:
My favorite balloon of the period, the Parseval-Sigfeld, featured with hard numbers on wind speed (66ft per second). Parseval invented the “sausage” balloon design that once refined was deployed by Germany, France, and to great effect Belgium in WWI. But this text is of course from before the war (209, 211, 274).
Posted in agriculture, airships, balloons, books, mutoscope, the real wold | No Comments »
August 22nd, 2009
over at AirshipWorld, Andreas has created a new version of his airship profile simulator. It’s only good for rotationally symetrical pressurized envelopes (sorry hybrid lifting body airship aficionados) but it’s still damned cool! (Windows Only) Now you can check the drag, volume, surface area, and lift center of your theoretical airship automatically.
Tags: airships, airshipworld, software
Posted in airships, balloons | No Comments »
August 17th, 2009
I don’t speak French but expert solar aeronaut Christophe Praturlon has a blog I just found out about. Good videos and pictures including manned launches.
Posted in balloons, the real wold | 1 Comment »