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I grew up near the LTA base in Santa Ana, that had two monster airship hangars.Speaking of Airships, the Airport I work at is a former WW2 US Navy Airship base. It was used to patrol the Gulf of Mexico during the war. Unfortunately only part of the huge Airship hangar exists today, along with a few bunkers.
The USS Akron and USS Macon both could launch and recover their fighters by way of a "Skyhook"... yes, there is such a thing....Im unsure if these fighters were able to re-tether to the mother ship after launch.
These were rookies practicing, the seasoned pilots made it look easy with their Sparrowhawks.looks difficult to hok back onto the airship
I remember a story of a blimp off of the coast of Fl that engaged a U-boat and sunk it. Was an instance of the right place at the right time as blimps don't move fast. They fly over my house all the time heading from a base in Ohio to Pittsburgh to cover the football games.
As for hydrogen being safer than avgas. I will say no/maybe. Avgas is not flammable...avgas vapor mixed with air is extremely flammable. You can, and I have flicked a match into gas which was of the same octane as lower avgas. The match went out and there were no flames. I would bet that the tank Adler drilled into had very little if any liquid avgas as it was junk and was more vapor. I could be wrong and mean no disrespect. With no air there was virtually no chance of fire....hence the self sealing bladder liner on fighters later in the war. It would shrink as fuel was depleted so there was not a empty void of air...that would be needed to be vented in to keep a vacuum from occurring. An API round could pass through the wall of the tank, into the avgas, and back out without setting the tank aflame...because it was devoid of O2. If the ratio of gas to O2 is higher for the gas the engine will not start...it will flood. So, in this instance I will say no. Hydrogen is already in the gaseous state so should ignite more readily. I would image it still needs O2 to burn. I do not know how pure the H was in these zeps. But it was already in the vapor state so a leak would be easier to set aflame as it mixed with air than a liquid at high alt and colder temps which would retard the flash point. I haven't messed with hydrogen so can't attest to it fully.
During WWI (apparently) Zepplin gas cells were made from cow stomachs which could contain the Hydrogen.