And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Wednesday, February 10, 2016
Hindenburg construction during the 1930s in Germany
For the rigid structure, they used Duralumin, the brand name for the first commercially available structural aluminum. The alloys composition is roughly equal to a 2000 series aluminum available today.
Big Gas Bag...
ReplyDeleteFor the rigid structure, they used Duralumin, the brand name for the first commercially available structural aluminum. The alloys composition is roughly equal to a 2000 series aluminum available today.
ReplyDeleteIt's an impressive scale of construction too. An air leviathan.
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