Hydrogen T-Shirt Cannon Working Group Signup

[Max Bareiss]

To All:

     Hacksburg will be making a hydrogen-powered t-shirt cannon for the VT CRC Game Changer Week (September 12-15). We will have a meeting each week (at minimum) until then in order to plan and build the device. If you're interested, please sign up with your potential meeting times here: https://www.when2meet.com/?16419453-5c7mV . In about a week, I'll pick a meeting time and we'll get started. The first couple of meetings will be in-person + online, but after that we're probably going to be building the device, and there won't be much to do online. Please email the board if you have any questions.

From,

     Max

[Max Bareiss]

To All:

     These meetings will be on Thursdays at 6:00PM, and the first one will be tomorrow. You can join in-person or at https://meet.hacksburg.org/OpenGroupMeeting . As we get closer to the September 15 due date and start building the device, t-shirt cannon meetings might be in-person only.

From,

     Max

[John Hutchinson]

If you are meeting at the workshop tonight, please turn on the computer and join the jitsi meeting. There should be no password required.

John Hutchinson | Board of Directors
Hacksburg, Blacksburg's Workshop
Hacksburg.org

On Wed, Aug 24, 2022, 10:41 AM Max Bareiss <m...@hacksburg.org> wrote:

To All:

     These meetings will be on Thursdays at 6:00PM, and the first one will be tomorrow. You can join in-person or at https://meet.hacksburg.org/OpenGroupMeeting . As we get closer to the September 15 due date and start building the device, t-shirt cannon meetings might be in-person only.

From,

     Max

On Tue, Aug 16, 2022 at 6:16 PM Max Bareiss <m...@hacksburg.org> wrote:

To All:

     Hacksburg will be making a hydrogen-powered t-shirt cannon for the VT CRC Game Changer Week (September 12-15). We will have a meeting each week (at minimum) until then in order to plan and build the device. If you're interested, please sign up with your potential meeting times here: https://www.when2meet.com/?16419453-5c7mV . In about a week, I'll pick a meeting time and we'll get started. The first couple of meetings will be in-person + online, but after that we're probably going to be building the device, and there won't be much to do online. Please email the board if you have any questions.

From,

     Max

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[John Hutchinson]

Thank you to everyone who participated in the meeting tonight. There was a lot of good discussion on how the t-shirt launcher could work and how to address safety concerns. The meeting notes can be found at: https://docs.google.com/document/d/1Dg504bpOdNuL0hPfK1t47SZLrYer2D-wx6xQOP9CPSU/

It was decided that potato cannon construction techniques could be used with a Schedule 40 steel pipe for a combustion chamber and a clear plastic tube for the t-shirt barrel. The main outstanding concern is how to prevent hydrogen detonation (as opposed to slower burning) as detonation increases  the sound level when firing and the risk of the t-shirt launcher failing catastrophically. Some different ideas have been proposed and are outlined in the meeting notes.

I plan to bring the hydrogen generator to Hacksburg on Saturday to experiment with different methods of preventing detonation. Stay tuned for a future email with the time for that.

John Hutchinson

[James Dunson]

Based on some discussion with John after the meeting last night, I
threw together a rough sketch (attached) of a possible design to
iterate on using mostly readily available hardware store parts.

** James **

> To view this discussion on the web visit https://groups.google.com/a/hacksburg.org/d/msgid/discussion/CAFEQp7bT%3Db%3D0Vx03ZkPxLVx5%3DaQEexae4DWvD6uSXN9i%3DsDFQg%40mail.gmail.com.



--
James R. Dunson
Unix Systems Administrator, VT Department of Geosciences
http://www.geos.vt.edu/

[John Hutchinson]

Hi All,

On Thursday we started experimenting with combusting hydrogen and made some bangs! Unfortunately, we didn't have the right tap for mounting the spark plug/igniter, but I picked it up today and we are planning on meeting tomorrow to fully assemble the combustion chamber and perform some more experiments. I am planning on showing up around 1 pm, hopefully that works for everyone.

Also, if you aren't already aware, there is a hydrogen cannon channel on zulip for more casual back and forth discussion: https://chat.hacksburg.org/#narrow/stream/11-Classes-and-Events/topic/Hydrogen.20Cannon.20.F0.9F.92.A5

John