Documentation and Pull back and shoot:
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Video describing the torsion artillery project (HSU/UniBw-H; University of Trier; University of Osnabrueck; Gymnasium Ising; Varusgesellschaft) Torsionsvideo 346 MB
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Experiment setting with rain protection and shooting chronograph, taken from a distance of ca. 50m. In this sequence, elastic Ps.-Heron arms are used.
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Extract from TV report (heute_mittag, 27.06.2017 13.15, Ⓒ ORF) featuring Lts Drangusch and Taeger test-firing the ballista
Draw-and-shoot sequences from different perspectives:
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Slow motion of preceeding from the perspective of the personnel operating the catapult
Flying arrows:
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Short-range shots (120m), taken from a distance of ca. 320m; arrows flying at approx. 70 m/sec.
Hitting targets:
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Two short-range shots (30 m) on plastic target covered by protective ceramic body armour; the first shot only touches the plate, the second hits it at its centre
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Three short-range shots (120 m) through target: Two with slightly lower speed (80 m/sec.) and higher angle (one through plate, one through plastic target), one with higher speed (86 m/sec.) and lower angle (5 degrees of elevation) through chipboard panels (thickness: 45 mm = 25 mm disused table-tennis table plate plus 20 mm connecting panel); the latter arrow’s kinetic energy will have been in the 875J region. In all three cases, you can hear the whistle sound of the approaching arrows
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Still photo frames of the last two arrows penetrating the plastic and the wooden targets; notice the cloud of evaporating matter.
![Still photo frames of the last two arrows penetrating the plastic and the wooden targets; notice the cloud of evaporating matter.](https://www.hsu-hh.de/hisalt/wp-content/uploads/sites/743/2018/03/einschlag-1024x409.png)
Letzte Änderung: 24. April 2018