TED Conversations

Gilbert Griffith

This conversation is closed.

Let us re-visit the idea of airship (lighter than air) transport. The scale of fast and dirty jet transport is unsustainable

The idea of using large lighter than air dirigibles was thrown
out thanks mainly to bad publicity from one crash. The Hindenberg flew safely until it's spectacular crash in 1937 scared the world into abandoning the whole idea of airships.
I think this was a big mistake and has left the cheapest and most efficient lifting gas, Hydrogen, with a undeserved bad reputation.

With today's technology and materials it would be relatively easy to build a modern airship using hydrogen as the main lifting gas with extreme safety even by today's standards.

My ideas for design include the following features and their benefits.

1. Solar panels cover the top half of the airship and provide power to run motors for propulsion, power to crack water to supply the hydrogen and oxygen for other uses or for passengers and crew to aid breathing at altitude.
Advantages; free fuel, excess oxygen returned to atmosphere.

2. A rain collection gutter around the equator of the airship to collect water which is then used for ballast, electrolysis, and passenger/crew needs.
Advantages; no resupply of consumables except food and luxuries.

3. The hydrogen compartments are sealed inside slightly larger compartments that are filled with helium, nitrogen or carbon dioxide.
Advantages; Less possibility of igniting the hydrogen. The ratio of hydrogen to the inert gas can be altered by compressing or releasing one or both to allow buoyancy adjustment (amount of lift, and change of pressure altitude).

4. Airships can be used for many other purposes than passenger carrying. They can lift large weights and deposit them in remote locations that only helicopters can get to.

5. There may even be no need to land (especially in bad weather) if passengers and supplies are ferried to the airship by helicopter which could land on top of the airship to unload.


Closing Statement from Gilbert Griffith

I am disappointed.
Especially with the number of criticisms based on subjects I was not specifically addressing.
For instance Vincent DeVillier safety (as do others) of a highly explosive gas, hydrogen, ignoring the highly inflammable nature of jet fuel used today.
Similarly, speed was not a significant part of my proposal.
Also, many people referred to the past performance of airships as an obstacle to their re-introduction. Perhaps forgetting the early years of aviation, the mistakes made, and many lives lost.
Some contributors suggested other forms of transport as a subject, I invite them to start their own discussions, I too would like to see trains powered by solar and more of them than present rail lines can carry, ie. more rail lines everywhere.
The thrust of my ideas were for sustainable transport and delivery.
I predict that in not so many years hydrocarbon fuels will run out or become hideously expensive.
Twenty years ago I was advising friends to "get out of the car manufacturing industry". It is failing here in Australia and already the roads are often clogged, and people suffering. I live in country Victoria for the fresh air and find Melbourne smog discomforting after a few days there. Drivers using mobile phones are a deadly menace!
No matter what form transport of the future takes, people are going to die from it, accidentally or due to the ineptness of drunks, the drugged or ignorant will continue to support the road toll and air crashes. So there is no reason to discard the idea of airships because of past accidents that were sensationalized.
The main problem I can see involves money. The start up involves so much that lawyers and crooks can stop a project in it's tracks. Others whom I call "bleeding hearts" will shout out that the money could be used to help the poor and starving, and to save lives. Don't get me started! All they have done is to create bigger problems.

Showing single comment thread. View the full conversation.

  • Jun 17 2013: I'd like to see a hybrid air ship with power but done for individuals or two-seaters. Not keen on hydrogen though.
    • thumb
      Jun 17 2013: There is a minimum size of about 40 meters that would require a lot of garages or hangars.
      I'd like a 2 seater BD10 jet, but let's be more realistic about finding a sustainable means of long distance transport.

      In my opinion hydrogen is safer to handle than petrol, also many cars here run on LPG (liquid petroleum gas) which is also highly inflammable. The main point is hydrogen is virtually free, Helium is expensive.
      • Jun 18 2013: Hydrogen is fine IN A CAN under pressure. It's a lot more worrisome in a motorized balloon where there is static.
        • thumb
          Jun 21 2013: Everything can be worrisome. A bad pilot in a plane, bad weather, jet fuel, speed.
          Depends on how worrisome a person is whether they even fly or not.
          There were a few dozen deaths from airship accidents that could have been avoided with today's knowledge. But how many more from regular passenger flights? We have become used to those.
      • thumb
        Jun 20 2013: Everyone who thinks hydrogen would remain "virtually free" if it became the primary fuel for mass, long-distance air travel raise your hand.
        • thumb
          Jun 21 2013: Hardly. But using solar power to crack water and compress hydrogen (or oxygen) is virtually free. And it is then sustainable because when you burn the hydrogen you get water back.

Showing single comment thread. View the full conversation.