How to Launch a Camera Into Space (with FAA Approval) | Hacker News Reader

How to Launch a Camera Into Space (with FAA Approval)

popularmechanics.com

58 pointscwan12 comments

Their project dates back to 2009. One of the students went on to start a very noble project: http://grassrootsmapping.org/about/

For folks in SF, noisebridge has a similar "space program" (high altitude photographs via a balloon). They are very friendly people ... I wish I still lived in the Bay area and could do outdoorsy stuff in the Winter.

link: http://laughingsquid.com/noisebridge-has-a-space-program/

Pointing camera down woulda been cool.

You can always use more than one camera. Also I've somewhere seen a similar project that used HD video camera.

Google sent a nexus one into space. Details and videos here: http://googlemobile.blogspot.com/2010/12/android-in-spaaaace...

Since then some people have apparently sent the same phone up on a model rocket.

At about -0:40, the balloon pops. It looks like a tentacly space alien for a few frames.

Cool project :)

I hate how everyone keeps calling this "Space". It's near-space.

Space is considered to begin at 100km altitude. These balloons can go up to 45km at the very highest.

Maybe I missed a link or explanation or just lack the education, but how do they get the parachute to deploy after the balloon pops upon descent?

Usually, a pressure altimeter triggers the parachute as the load passes through a certain altitude.

PROTIP: Do not deploy the parachute at apogee. If you do, your payload will drift and drift and drift. Instead, let your payload fall back to earth and deploy your main parachute closer to Earth. Bonus points: Deploy a drogue chute prior to the main chute. An accelerometer trigger works great for detecting the popping of the balloon.

In most cases the parachute is pre-deployed and just hangs above the balloon. Once it starts descending, it inflates as the air catches it.

There's no reason to get fancy about it.

My friends and I did this twice when we were in college in Oklahoma back in the late 80s.

We ran the balloon line up through a hole in the center of the parachute, which itself was tied off with several strings terminating to a single string tied to the payload. Tests showed that even if a large amount of the balloon stuck around on the string after it popped, it would have a negligible effect on the performance of the chute, basically laying on top of the chute as it did its job.

The balloon itself was call the "Sky Buster" and cost about $35 from a local shop. I had a welding shop at the time, so had access to large quantities of helium. The Air & Gas driver would give helium to me for free.

We did a tethered launch of a video camera first (at those times quite large and heavy) and waited until dusk to launch the balloon without the camera. A modified camera flash was hung below the balloon and had a variable flash pattern programmed into it. If it was going up, it would flash every 15 seconds or so. Coming down, it was like once every 5 seconds. We used that for tracking.

The first time we launched it, we tracked it for over an hour before recovering it 20 miles from where we launched it. Both launches were on a windless night (in Oklahoma a rarity) and once the balloon was at altitude, it clearly started moving with purpose. We lost the second one after following it for about 50 miles.

Back when we did it, we didn't have no stinking GPS or cell phones like these whippersnappers nowadays. Shoot, there weren't even digital cameras! We'd have had to do it with film, if we did it at all.

Great memories, and ones I plan on repeating with my son.

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