K
Klaus Hannemann
Researcher at German Aerospace Center
Publications - 165
Citations - 2302
Klaus Hannemann is an academic researcher from German Aerospace Center. The author has contributed to research in topics: Expansion tunnel & Hypersonic speed. The author has an hindex of 26, co-authored 163 publications receiving 1949 citations. Previous affiliations of Klaus Hannemann include University of Giessen.
Papers
More filters
Journal ArticleDOI
Transient fluid-combustion phenomena in a model scramjet
TL;DR: In this paper, an experimental and numerical investigation of the unsteady phenomena induced in a hydrogen-fuelled scramjet combustor under high-equivalence-ratio conditions is carried out, focusing on the processes leading up to unstart.
Proceedings ArticleDOI
Achievements Obtained for Sustained Hypersonic Flight within the LAPCAT project.
TL;DR: In this article, the design of hypersonic airbreathing vehicles is a challenging objective due to the intrinsic complexity of propulsion-airframe integration in combination with an engine cycle design able to operate over a wide Mach number range.
Journal ArticleDOI
Experiments on passive hypersonic boundary layer control using ultrasonically absorptive carbon–carbon material with random microstructure
TL;DR: In this paper, the influence of ultrasonically absorptive carbon-carbon material on hypersonic laminar to turbulent boundary layer transition was investigated experimentally in the High Enthalpy Shock Tunnel Gottingen of the German Aerospace Center (DLR) at Mach 7.5.
Journal ArticleDOI
Incipient thermal choking and stable shock-train formation in the heat-release region of a scramjet combustor. Part I: Shock-tunnel experiments
TL;DR: In this paper, a series of experiments are performed in the High Enthalpy Shock Tunnel to investigate the response of the HyShotII scramjet combustor to equivalence ratios close to the critical value at which the onset of thermal choking occurs.
Journal ArticleDOI
Experimental study of second-mode instability growth and breakdown in a hypersonic boundary layer using high-speed schlieren visualization
TL;DR: In this article, the development of second-mode instability waves within the boundary layer on a slender cone under high Mach number and high-enthalpy conditions is investigated. But the wavepacket structures evolve from a "rope-like" appearance to become more interwoven as the disturbance nears breakdown.