Zeplin Ai



Zeplin

Schienenzeppelin
Rear view, showing the two-bladed propeller
ManufacturerFranz Kruckenberg
Built atHannover-Leinhausen (DR)
Constructed1929
Scrapped1939
Number built1
Capacity40 people
Specifications
Car body constructionAluminum
Car length25.85 m (84 ft 934 in)
Height2.8 m (9 ft 214 in)
Maximum speed230.2 km/h (143.0 mph)
Weight20.3 t (20.0 long tons; 22.4 short tons)
Prime mover(s)BMW VI
Engine type
Cylinder count12
Cylinder size
  • right bank: 160 mm × 190 mm (6.30 in × 7.48 in)
  • left bank: 160 mm × 199 mm (6.30 in × 7.83 in)
Power output600 hp (450 kW)
TransmissionCompressed air[1] (driving a propeller)
UIC classification2
Track gauge1,435 mm (4 ft 812 in) standard gauge

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Zeppelin Aircraft

The Schienenzeppelin (German: [ˈʃiːnənˌtsɛpəliːn]) or rail zeppelin was an experimental railcar which resembled a Zeppelin airship in appearance. It was designed and developed by the German aircraft engineer Franz Kruckenberg in 1929. Propulsion was by means of a pusher propeller located at the rear: it accelerated the railcar to 230.2 km/h (143 mph) setting the land speed record for a petrol powered rail vehicle. Only a single example was ever built, which due to safety concerns remained out of service and was finally dismantled in 1939. Review movie knives out.

History[edit]

Anticipating the design of the Schienenzeppelin, the earlier Aerowagon, an experimental Russian high-speed railcar, was also equipped with an aircraft engine and a propeller.

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The railcar was built at the beginning of 1930 in the Hannover-Leinhausen works of the German Imperial Railway Company (Deutsche Reichsbahn). The work was completed by autumn of the same year. The vehicle was 25.85 metres (84 ft 934 in) long and had just two axles, with a wheelbase of 19.6 metres (64 ft 358 in). The height was 2.8 metres (9 ft 214 in). As originally built it had two conjoined BMW IV 6-cylinder petrol aircraft engines (later a single BMW VI 12-cylinder of 600 horsepower (450 kW)) driving a four-bladed (later two-bladed), fixed pitch ash propeller.[1] The driveshaft was raised seven-degrees above the horizontal to give the vehicle some downwards thrust. The body of the Schienenzeppelin was streamlined, having some resemblance to the era's popular Zeppelinairships, and it was built of aluminum in aircraft style to reduce weight. The railcar could carry up to 40 passengers;[2] its interior was spartan and designed in Bauhaus-style.

On 10 May 1931, the Schienenzeppelin exceeded a speed of 200 km/h (120 mph) for the first time. Afterwards, it was exhibited to the general public throughout Germany. On 21 June 1931, it set a new world railway speed record of 230.2 km/h (143.0 mph) on the Berlin–Hamburg line between Karstädt and Dergenthin, which was not surpassed by any other rail vehicle until 1954. The railcar still holds the land speed record for a petrol powered rail vehicle. This high speed was attributable, amongst other things, to its low weight, which was only 20.3 tonnes (20.0 long tons; 22.4 short tons).

Front view of the Schienenzeppelin in its original form; at Berlin on the morning of the record-breaking run, 21 June 1931

In 1932 Kruckenberg began a new project with the rail car involving significant modifications. It was cut just behind the forward wheels and received a complete new front end with a two-axle bogie, resembling the later 137 155 railcar. The rear single axle remained as it was. The modifications were completed by November 1932. The aircraft engine was still used; however, the power transmission was hydraulic through two Föttinger fluid drives for both directions of travel, fitted on the forward bogie. A pointed fairing was installed in place of the propeller. The resulting vehicle was a B-1 with a powered front bogie. This version of the vehicle reached 180 km/h (110 mph) at the beginning of 1933.

Due to many problems with the Schienenzeppelin prototype, the Deutsche Reichsbahn-Gesellschaft decided to go their own way in developing a high-speed railcar, leading to the Fliegender Hamburger (Flying Hamburger) in 1933. This new design was suitable for regular service and served also as the basis for later railcar developments. However, many of the Kruckenberg ideas, based on the experiments with Schienenzeppelin and high-speed rail travel, found their way into later DRG railcar designs.

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At the beginning of 1934 the Schienenzeppelin was rebuilt for the last time, and a Maybach GO 5 engine was installed. In July 1934 it was sold to Deutsche Reichsbahn (German Imperial Railway) for 10,000 Reichsmarks. Five years later, in 1939 the rail zeppelin was finally dismantled because its material was needed by the German army.[3]

Disadvantages[edit]

The failure of Schienenzeppelin has been attributed to everything from the dangers of using an open propeller in crowded railway stations to fierce competition between Kruckenberg's company and the Deutsche Reichsbahn's separate efforts to build high-speed railcars.

One disadvantage of the rail zeppelin was the inherent difficulty of pulling additional wagons to form a train, because of its construction. Furthermore, the vehicle could not use its propeller to climb steep gradients, as the flow would separate when full power was applied. Thus an additional means of propulsion was needed for such circumstances.

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Safety concerns have been associated with running high-speed railcars on old track network, with the inadvisability of reversing the vehicle, and with operating a propeller close to passengers.[1]

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See also[edit]

  • Aérotrain, a French hovercraft train using ducted fans and jet engines

References[edit]

  1. ^ abcTraver Adolphus, David (December 2007). 'Schiene Zeppelin'. Hemming Motor News. Retrieved 23 March 2011.CS1 maint: discouraged parameter (link)
  2. ^von Heyl, Julian (1 March 2008). 'Der Schienenzeppelin von Franz Kruckenberg'. Echolog. Retrieved 23 March 2011.CS1 maint: discouraged parameter (link)
  3. ^Orosz, Peter. 'Is it a plane? Is it a train? No, it's a prop-driven V12 locomotive!'. Trainlopnik. Jalopnik. Retrieved 23 March 2011.CS1 maint: discouraged parameter (link)

Further reading[edit]

  • Gottwaldt, Alfred (2006). Der Schienenzeppelin. Franz Kruckenberg und die Reichsbahn-Schnelltriebwagen der Vorkriegszeit 1929–1939. Freiburg: Ek. ISBN978-3-88255-134-1.
  • Gottwaldt, Alfred (1972). Schienenzeppelin. Franz Kruckenberg und die Reichsbahn-Schnelltriebwagen der Vorkriegszeit 1929–1939. Augsburg: Rösler und Zimmer.

External links[edit]

Air Zeppelin Seat

Wikimedia Commons has media related to Schienenzeppelin.

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  • 'Lebendige Bahngeschichte: Schienenzeppelin, Bw Ottbergen im Maßstab 1:87'. Eisenbahn Romantik. Episode 605 (in German). June 18, 2006. SWR Fernsehen. Retrieved 23 March 2011.CS1 maint: discouraged parameter (link)
  • Hanover. A Railway Zeppelin (newsreel (free preview)). London: British Pathe Newsreel. 27 October 1930. Film ID 747.20. Retrieved 7 May 2011.CS1 maint: discouraged parameter (link)
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