Today -100: August 25, 1921: Of lemons and treaties

The dirigible ZR-2, the largest airship ever built, sold by the British to the US Navy for $2 million (well, $1.5 million so far; the US won’t have to make the last payment), breaks apart and explodes over Hull, killing 44 of its crew of 49. 16 Americans, 28 British, and a black cat named Snowball whose nationality is undisclosed. Some of them fall out into the Humber River when the ship splits apart. A few of the crew had parachutes, for all the good it did them. This is the largest air disaster to date, and if you’re wondering, the Hindenburg disaster in 1937 killed 36. The ZR-2 was not well-designed or well-built.

For example, the design failed to take aerodynamic stresses into account. And the testing process was rushed. Its girders, chosen for lightness rather than strength, didn’t hold up in the 3 earlier test runs and really really didn’t hold up this time. Crew called it a “lemon,” which is earlier than I would have expected to see that term. 

Admiral William Moffett, head of the Navy’s Bureau of Aeronautics, hopes this little setback won’t hurt the development of dirigibles: “We will carry on and build and operate as many big, rigid dirigibles as are necessary, so that these brave men shall not have given their lives in vain.” Moffett will die in a dirigible crash in 1933.

The peace treaty between the US and Austria is signed, but the one with Germany isn’t because of some secret technical reason. The details of both treaties are also being kept secret.

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