Documentation and Pull back and shoot:
Video describing the torsion artillery project (HSU/UniBw-H; University of Trier; University of Osnabrueck; Gymnasium Ising; Varusgesellschaft) Torsionsvideo 346 MB
Experiment setting with rain protection and shooting chronograph, taken from a distance of ca. 50m. In this sequence, elastic Ps.-Heron arms are used.
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:
Slow motion of preceeding from the perspective of the personnel operating the catapult
Flying arrows:
Short-range shots (120m), taken from a distance of ca. 320m; arrows flying at approx. 70 m/sec.
Hitting targets:
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
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
Still photo frames of the last two arrows penetrating the plastic and the wooden targets; notice the cloud of evaporating matter.
Letzte Änderung: 24. April 2018