Live data from Hacker News

Cargo Airships Are Happening

elidourado.com

61–70 of 308 posts

Re: Cargo Airships Are Happening

#61

Earlier quoted context omitted.

The article describes electric airships

The GP asked about burning fuel. But in the case of electric airships, you can run an electric condenser, extracting atmospheric water vapor.

That seems like it would be really bad for energy efficiency: now you need batteries large enough for propulsion during the whole trip, plus extra for extracting water vapor.

Why not just take on some liquid water at the destination when you drop the cargo?

Re: Cargo Airships Are Happening

#62
The article on the site is vague, but if you go to the company's site, and examine the images, you can get a close look at the airship design. The image on the web site [1] is higher resolution than the web site needs, and you can zoom in if you open the image directly.

The cargo capacity of the airship shown appears to be four 20-foot containers, or 4 TEU. This is comparable to a B-747 freighter. Current new price of a B-747 freighter is about US$400 million. Trips per unit time would be less but fuel cost would be lower.

Large container ships are now in the 20,000 TEU range.

It's not clear there's much demand for faster container shipping. Container ships tend to run slower than they can, to save fuel. Maersk has some 4,000 TEU high speed container ships capable of 29 knots, but due to lack of a market and huge fuel costs, they're mothballed in a loch in Scotland.

[1] https://images.squarespace-cdn.com/content/v1/66b24fc3f58cf0...

Re: Cargo Airships Are Happening

#63
Articles about airship dreambuilding have been a mainstay of HN and Reddit since the early days. The tech has always been super inspiring, yet "just around the corner". It would be almost sad to see them actually become a reality.

Re: Cargo Airships Are Happening

#64
post #3

I see this brought up every few years but nothing ever seems to happen. I used to live not far from the Weeksville station in NC and would occasionally see flights from there. Would love to see these all over. https://www.atlasobscura.com/places/weeksville-dirigible-han...

This. Anybody remember cargolifter?

Re: Cargo Airships Are Happening

#65
post #62

The article on the site is vague, but if you go to the company's site, and examine the images, you can get a close look at the airship design. The image on the web site [1] is higher resolution than the web site needs, and you can zoom in if you open the image directly. The cargo capacity of the airship shown appears to be four 20-foot containers, or 4 TEU. This is comparable to a B-747 freighter. Current new price o…

For the curious the search string you want is "Maersk cargo ships in Loch Striven".

Re: Cargo Airships Are Happening

#67
Is there an actual problem here that airships solve? Is getting cargo across the Pacific one or two days faster (and that's presumably a best case, since airships are heavily weather and wind dependent) actually that valuable? I would have though the scale of international shipping would anyway mean its pretty cheap to set up a continuous stream of cargo, which airships would struggle to replicate in any efficient way.

Honestly, it sounds like a cool thing to work on, but this article is not convincing about the potential market. I can easily imagine former SpaceX and Hyperloop engineers thinking a cool technology will simply find a market, but that's not really what Elon Musk did with SpaceX.

Re: Cargo Airships Are Happening

#68

Earlier quoted context omitted.

Luckily, we have much better weather forecasting than we did last time we tried airships for realsies.

Severe turbulence in clear conditions is increasing due to climate change: https://www.bbc.com/future/article/20240524-severe-turbulenc...

Turbulence for an airliner is going to be experienced differently for an airship. I'm not sure what to expect, TBH, but the difference between a plane moving at Mach 0.8 and an airship moving at 80 mph will definitely be real.

Re: Cargo Airships Are Happening

#69

Earlier quoted context omitted.

On water: More like atlantis, with a harbor and a loading dock. Above water: maybe rope-anchored airships. What I wanted to point out is that taxes are ground based, meaning the volume that's available above the ground usually is not used because of physical limitations of buildings and construction. You could increase that efficiency of recurring costs for land vs storage space with airships.

I don’t see how storage space in airships could come anywhere as cheap as storage space on land even taking land taxes into account. Airships are not cheap and would need regular maintenance. I guess the water analog of a warehouse would be a barge to get perhaps you’re thinking more of an airbarge concept. Even still, warehouses are cheap in a way that flying things are not.

Well, this discussion is in the context of airships, so there's no question that everything that doesn't require potential energy to defeat gravity and to stay in position is more efficient.

The most efficient solution is btw not doing anything, and just leave the goods where they are produced, and stop producing too much for the own population. I'm pointing out that the concepts of finance and economies don't necessarily come hand in hand with what's more efficient to build. Otherwise people would use trains and not cars and planes.

Re: Cargo Airships Are Happening

#70

Earlier quoted context omitted.

Luckily, we have much better weather forecasting than we did last time we tried airships for realsies.

But even then, forecasted storms mean more delay to the already-slow airship. Also the airship is simply too slow to dodge any sudden severe weather, even if they saw it coming hours before.

Perhaps. Airships will likely want to travel along jet streams since the wind speeds can outpace the airspeed of the airship. The neat thing here is that weather that will be problematic can be predicted days in advance, not just hours. Even 2 hours gets you pretty far in an airship in wind-calm, especially compared to (say) container ships. When you aren't in wind-calm, you can probably take advantage of winds by choosing your altitude wisely.
Post reply on HN