The La France was a French Army non-rigid airship launched by Charles Renard and Arthur Constantin Krebs on August 9, 1884. Collaborating with Charles Renard, Arthur Constantin Krebs piloted the first fully controlled free-flight with the La France. The 170-foot (52 m) long, 66,000-cubic-foot (1,900 m) airship, electric-powered with a 435 kg (959 lb) zinc-chlorine flow battery completed a flight that covered 8 km (5.0 mi) in 23 minutes. It was the first full round trip flight with a landing on the starting point. On its seven flights in 1884 and 1885 the La France dirigible returned five times to its starting point.
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👉 La France (airship) in the context of Pierre Janssen
Pierre Jules César Janssen (22 February 1824 – 23 December 1907), usually known as Jules Janssen, was a French astronomer who, along with English scientist Joseph Norman Lockyer, is credited with discovering the gaseous nature of the solar chromosphere, and with some justification the element helium.