Snailochod
A snailochod , also known as amphiroll, (from Russian Шнекоход , meaning: screw propulsion ) is an amphibious vehicle driven by cylindrical floating bodies around which Archimedean screws are attached . It is characterized by the fact that it can move in two dimensions on almost any soft or liquid surface.
technology
This is achieved by rotating the floats; with opposite rotation the snail moves forwards or backwards, with rotation in the same direction sideways, and with different quick rotations of the drive screws it can be driven obliquely. As a rule, screw chods have a separate motor for each drive screw. The low ground pressure is advantageous; the ZIL-2906, for example, only generates a specific ground pressure of 25 g / cm 2 . This results in good cross-country mobility on swampy or deeply snow-covered ground. As an all-terrain vehicle, however, the Schneckochod was unable to establish itself, as it has two significant disadvantages compared to a wheel- or chain-driven amphibious vehicle: By moving over banjo bolts, it cannot drive on solid ground such as asphalt or concrete, as the dead weight of the bolts is too low and too much mass would tear up the subsoil. The range of a snail's choke is also small, as it cannot travel very fast and has a high fuel consumption. Therefore, snail chods are usually transported on a carrier vehicle.
history
As early as 1924, worm-driven vehicles were shown, but they were not suitable for swimming. At the beginning of the 1960s, the Dutchman de Bakker built a worm gear with two DAF Variomatic transmissions . In the 1970s, SIL Schneckochods developed the ZIL-2906 and ZIL-29061 for salvaging landed Soyuz capsules . The latter was built from 1980 to 1991 in small series of twenty pieces. The prototype ZIL-4904 , built several times in 1972 and weighing around 2.5 tons, is the largest snailochod in the world.
literature
- Stanislav Nikolajewitsch Sigunjenko: 100 великих рекордов транспорта . Вече, 2013, ISBN 9785444470572 .
- Stanislav Slavin: Оружие победы . Вече, 2005, ISBN 9785953307048 . P. 161 ff.
Individual evidence
- ↑ a b c d e f g Tim Skorenko: Ввинчиваясь в грязь: шнекоход. April 19, 2011, accessed December 16, 2015 (Russian).
- ↑ Svargaman: Шнекоход ЗИЛ-2906 ( Memento of the original from December 22, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. In: Voprosik , January 18, 2012, accessed December 16, 2015 (Russian).
- ^ Armstead Snow Motors. December 26, 2008, accessed December 16, 2015.
- ↑ de Bakker: Amphiroll. April 16, 2010, accessed December 16, 2015.
- ↑ ZiL-2906 Cosmonaut Recovery Vehicle ( Memento of the original from December 13, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. . Retrieved December 16, 2015.
- ↑ DaniL: Шнекоход - Шнеко-роторный вездеход. In: Uniktech , March 30, 2011, accessed December 16, 2015 (Russian).
- ↑ Tom Joslin: Russia's Crazy Screw Drive Vehicle. In: Gizmodo , April 11, 2011, accessed December 16, 2015.
