9 Papers
58 Citations
Frank Schaefer is an academic researcher from Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institut. The author has contributed to research in topics: Light-gas gun & Hypervelocity. The author has an hindex of 5, co-authored 9 publications.
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Papers
Vulnerability of spacecraft harnesses to hypervelocity impacts
TL;DR: In this article, the vulnerability of spacecraft harnesses has been assessed during a study performed in framework of a European Space Agency contract, the harnesses consisted of three different space-grade cable types: power cables, screened twisted pair data cables and radio frequency (RF) cables.
26
Concept for a new light-gas gun type hypervelocity accelerator
Robin Putzar,Frank Schaefer +1 more
TL;DR: In this paper, a two-stage light-gas gun type accelerator was developed at Fraunhofer EMI and the pumping stage was modified to create a single, elongated pressure pulse to act on the projectile.
18
Impact fragment cloud propagating in a pressure vessel
TL;DR: In this paper, the impact velocities of aluminum projectiles on 1 mm thick AlMg3 plates were measured and the shape of the fragment clouds could be characterized as a function of the projectile diameters and pressures.
9
EMI's TwinGun Concept for a New Light-Gas Gun Type Hypervelocity Accelerator
Robin Putzar,Frank Schaefer +1 more
TL;DR: In this paper, a two-stage light-gas gun type accelerator was developed at Fraunhofer EMI, which features two parallel pump tubes that are attached to a single powder chamber.
8