Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Numerical and experimental investigation of the ignition process of a 105-mm tank gun round

Numerische und experimentelle Untersuchung des Anzündvorganges in einer 105-mm-Panzerkanone
: Gütlin, E.; Hensel, D.; Heiser, R.; Zimmermann, G.

10th International Symposium on Ballistics 1987. Proceedings
San Diego, 1987
International Symposium on Ballistics <10, 1987, San Diego/Calif.>
Fraunhofer EMI ()
Anzündung; Druckmessung; Gasdynamik; ignition; intergranular stress; Körnerdruck; Rohrwaffe; Treibladung; Zweiphasenmodell

In order to elucidate the process of the generation of pressure waves appearing under adverse conditions in tank guns, investigations of the ignition process of a 105-mm tank gun round were carried out in two ways: Analytically by applying the multidimensional two-phase interior ballistic model AMI, jointly developed by EMI-AFB and ISL, and experimentally by using a firing simulator with the chamber geometry of the 105-mm tank gun. The AMI code allows to calculate, e.g., the spatial distribution of pressure, temperature, and intergranular stress inside the granular propellant bed and its variation with time. By means of the simulator experiments pressure-time records both inside the propellant bed and at the chamber wall are obtained and the forces exerted on the projectile base measured. This paper describes the theoretical basis of the AMI code and the experimental techniques applied and compares in detail the calculated and measured spatial distribution histories both for regular sh ots and for shots using igniters which were modified to enhance pressure wave development due to unilateral ignition near the breech. (EMI)