jonititan's comments

jonititan | 3 years ago | on: IRIS²: The EU’s Response to Musk’s Starlink

The fact is not everything was the EU's fault. There was a lot Westminster could have done to make things better. They choose not to and indeed actually gold plated many EU directives due to virtue signaling which made them much more difficult to follow.

That said not all the good stuff actually was caused by the EU either. I'd recommend watching Yes Minister but apparently that will get you put on a watchlist these days... https://www.reddit.com/r/ukpolitics/comments/1153smh/yes_min...

The fact is politicians at all levels including EU take credit for things they didn't do and try to ignore the fallout from things they did. All the while blaming the voters. Mainly because changing public perception of policy choices takes time and effort and they have limited of both and tend to want to focus on things they actually care about.

jonititan | 3 years ago | on: Bugout: Browser-to-browser networking built on WebTorrent

Very interesting.

As well as other usages it seems this would be one way to host online games. The app itself being the only thing served centrally and then instances of the app get served by website visitor's to host their own private workspace/gamespace. So all data created in that instance would remain private to that instance and the clients that connect to it. Is that a reasonable use case or am I misunderstanding?

jonititan | 3 years ago | on: Homemade Heat Pump Manifesto (2009)

Probably because you need sufficient oxygen for combustion. The propane would only ignite where it comes out and mixes. Once the flame travels into the purged pipe it will probably die out for lack of oxygen.

Ticklish though I'm sure to do it properly and safely.

jonititan | 3 years ago | on: Attempts to power planes with hydrogen

I haven't looked at the various sponge or chemical binding concepts personally. To be used in an aircraft to be delivered say in 10 years time they would already need to have been approved by EASA or FAA or have a clear and straightforward approval pathway. Otherwise they represent a large schedule risk and new airliner types cost several billion to launch so they are pretty risk averse.

That's not to say those concepts won't work. Regarding long thin tanks wings don't actually have that much suitable internal volume for that. Lots of ribs, stringers, etc. That's why most hydrogen aircraft concepts use under wing pods or fuselage tanks to store the hydrogen even though it reduces safety margin. Civil aircraft regulators are allergic to storing fuel in the fuselage near the passengers for good reason.

jonititan | 3 years ago | on: Attempts to power planes with hydrogen

I'm actually on a project looking at this and it's not so rosy. My area is trying to predict maintenance costs for the hydrogen PEM fuel cells. The cells get contaminated pretty fast.

Regarding hydrogen suitability while it has excellent gravimetric efficiency it has terrible volumetric efficiency. You either need huge tanks and high pressure or cryogenic tanks to store it in its liquid phase.

Like anything else its doable we just need to accept higher airliner prices and slower speeds/shorter ranges.

jonititan | 4 years ago | on: FAA, do your damn job

Most car engines? Yes with the exception of those with ethanol mixed into them. For aircraft engines it's a definite no. Several accidents caused by putting pump gas in aircraft.
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