"The page you were looking for doesn't exist."

Of course the relevance of an FAA requirement for a british-registered airship under test in the UK is left as an exercise for the reader...

PDR

Phew, thank you for that. We're not completely stuffed just yet, then.

Thanks also to TURIN for belatedly adding his link; most interesting to read about the extraction and storage process.

The current version of EU 748/2012 does not contain any regulations about the design of airships, other than those of less than 1000 m^3 (for gas airships). But I may have overlooked something of course. The FAA does have a framework in place for certifying an airship of this size, of interest is that these regulations are based on the Transport Airship Airworthiness Requirements developed in Europe. With only a small number of airships of this size around, I wouldn't be surprised if any European or US projects are all using the same requirements, and with the FAA ones being based on the EU ones, they will most likely say the same thing about auto-deflation.

https://www.faa.gov/aircraft/air_cer...airships_regs/
Transport Airship Requirements | The Airship Association

Airlander | The Lyncean Group of San Diego

In Airlander 10, helium lift is controlled much like in a conventional blimp, using multiple ballonets located fore and aft in each of the hulls. A ballonet is a gas volume that can be inflated with air inside the main helium volume of the airship’s hull. Inflating a ballonet with air increases the mass of the airship and compresses the helium into a smaller volume, with the net result of decreasing buoyant lift. Inflating only the fore or aft ballonet will make the bow or stern of the airship heavier and change the pitch of the airship. These operating principles are shown in the following diagrams of a blimp with two ballonets shown in blue.

http://www.lynceans.org/wp-content/u...et-238x300.jpg

What if animals were like Airlander. Go on have a laugh.

https://www.youtube.com/watch?time_c...&v=yltlJEdSAHw

"We have paused for the time being collecting any payments in respect of the current fundraising and will be back in touch once we have determined our best course of action."
The damage assessment is expected to take "weeks" according to a spokesman.

From:- Airlander 10 'will be rebuilt' after collapsing at airfield.

The lighter side (sorry )

It was possibly a rather unfortunate piece of scheduling that, on the day of the incident, the "Yesterday" channel chose to repeat an episode dedicated to the development and success of the Airlander.

Personally, I hope the venture succeeds. Feel free to show any innovative developments in aviation that have been flawless from the onset.

How much does it cost to fill an A380 with JetA1?

The world's longest aircraft detached from its moorings and collapsed after a locking mechanism was not inserted correctly, a report has said.

https://www.bbc.co.uk/news/uk-englan...herts-44798529