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Hindenburg disaster

The Hindenburg disaster was an airship accident that occurred on May 6, 1937, in Manchester Township, New Jersey, United States. The LZ 129 Hindenburg (Luftschiff Zeppelin #129; Registration: D-LZ 129) was a German commercial passenger-carrying rigid airship, the lead ship of the Hindenburg class, the longest class of flying machine and the largest airship by envelope volume. Filled with hydrogen, it caught fire and was destroyed during its attempt to dock with its mooring mast at Naval Air Station Lakehurst. The accident caused 35 fatalities (13 passengers and 22 crewmen) among the 97 people on board (36 passengers and 61 crewmen), and an additional fatality on the ground.

The disaster was the subject of newsreel coverage, photographs and Herbert Morrison's recorded radio eyewitness reports from the landing field, which were broadcast the next day. A variety of theories have been put forward for both the cause of ignition and the initial fuel for the ensuing fire. The publicity shattered public confidence in the giant passenger-carrying rigid airship and marked the abrupt end of the airship era.

The Hindenburg was the successor of the Graf Zeppelin (LZ 127), which had been launched in 1928. After her maiden flight on 4 March 1936 the Hindenburg had made ten trips to the United States without any inccidents. After opening its 1937 season by completing a single round-trip passage to Rio de Janeiro, Brazil, in late March, the Hindenburg departed from Frankfurt, Germany, on the evening of May 3, on the first of ten round trips between Europe and the United States that were scheduled for its second year of commercial service. American Airlines had contracted with the operators of the Hindenburg to shuttle passengers from Lakehurst to Newark for connections to airplane flights.

Except for strong headwinds that slowed its progress, the Atlantic crossing of the Hindenburg was unremarkable until the airship attempted an early-evening landing at Lakehurst three days later on May 6. Although carrying only half its full capacity of passengers (36 of 70) and crewmen (61, including 21 crewman trainees) during the accident flight, the Hindenburg was fully booked for its return flight.

The airship was hours behind schedule when it passed over Boston on the morning of May 6, and its landing at Lakehurst was expected to be further delayed because of afternoon thunderstorms. Advised of the poor weather conditions at Lakehurst, Captain Max Pruss charted a course over Manhattan Island, causing a public spectacle as people rushed out into the streets to catch sight of the airship. After passing over the field at 4:00 p.m. EDT (20:00 UTC), Pruss took passengers on a tour over the seashore of New Jersey while waiting for the weather to clear. After being notified at 6:22 p.m. that the storms had passed, Pruss directed the airship back to Lakehurst to make its landing almost half a day late. As this would leave much less time than anticipated to service and prepare the airship for its scheduled departure back to Europe, the public was informed that they would not be permitted at the mooring location or be able to come aboard the Hindenburg during its stay in port.[citation needed]

Around 7:00 p.m. EDT (23:00 UTC), at an altitude of 650 feet (200 m), the Hindenburg made its final approach to the Lakehurst Naval Air Station. This was to be a high landing, known as a flying moor because the airship would drop its landing ropes and mooring cable at a high altitude, and then be winched down to the mooring mast. This type of landing maneuver would reduce the number of ground crewmen but would require more time. Although the high landing was a common procedure for American airships, the Hindenburg had performed this maneuver only a few times in 1936 while landing in Lakehurst.[citation needed]

At 7:09 p.m., the airship made a sharp full-speed left turn to the west around the landing field because the ground crew was not ready. At 7:11 p.m., it turned back toward the landing field and valved gas. All engines idled ahead and the airship began to slow. Captain Pruss ordered aft engines full astern at 7:14 p.m. while at an altitude of 394 ft (120 m), to try to brake the airship.

At 7:17 p.m., the wind shifted direction from east to southwest, and Captain Pruss ordered a second sharp turn starboard, making an s-shaped flightpath towards the mooring mast. At 7:18 p.m., as the final turn progressed, Pruss ordered 300, 300, and 500 kg (660, 660, and 1100 lb) of water ballast in successive drops because the airship was stern-heavy. The forward gas cells were also valved.[clarification needed] As these measures failed to bring the ship in trim, six men (three of whom were killed in the accident) were then sent to the bow to trim the airship.[citation needed]

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airship fire, 6 May 1937
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