Online discrimination of chemical substances using standoff laser‐induced fluorescence signals
Journal of Chemometrics, Volume 34, Issue 2, February 2020., 2020 Abstract Chemical contamination of objects and surfaces, caused by accident or on purpose, is a common security issue. Immediate countermeasures depend on the class of risk and consequently on the characteristics of the substances. Laser‐based standoff detection techniques can help to provide information about the thread without direct contact of ...
Marian Kraus +4 more
wiley +1 more source
Dense core response to forced acoustic fields in oxygen-hydrogen rocket flames
Propulsion and Power Research, 2020 Oscillatory combustion representative of thermo-acoustic instability in liquid rockets is simulated by experiment and LES calculation to investigate the flame behavior in detail.
Youhi Morii +5 more
doaj +1 more source
Experimental Flow Investigation of a Truncated Ideal Contour Nozzle [PDF]
, 2006 Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR.
Stark, Ralf, Wagner, Bernd
core +1 more source
Stand-off Detection at the DLR Laser Test Range Applying Laser-Induced Breakdown Spectroscopy [PDF]
, 2010 The DLR laser test range at Lampoldshausen allows for optical measurements under daylight conditions at distances up to 130 m. This infrastructure is very suitable for the development of stand-off detection systems of biological, chemical and explosive ...
Duschek, Frank +2 more
core +1 more source
DLR and the German H2 Standardization Roadmap: Contributions and activities of DLR Lampoldshausen within the German Standardization Roadmap on Hydrogen Technologies [PDF]
The presentation provides an overview of the DLR-RA activities and results during the project towards the German Standardization Roadmap on Hydrogen Technologies.
Linseisen, Bernhard
openaire +3 more sources
Exploration of combustion instability triggering using Large Eddy Simulation of a multiple injector Liquid Rocket Engine [PDF]
, 2016 This article explores the possibility of analyzing combustion instabilities in liq- uid rocket engines by making use of Large Eddy Simulations (LES). Calculations are carried out for a complete small-scale rocket engine, including the injection manifold ...
Candel, Sébastien +6 more
core +3 more sources
Experimental and numerical analysis of atmospheric propagation of high energy laser [PDF]
, 2015 The transmission of high power laser radiation through the atmosphere is influenced by turbulent motion of the air. As a result the beam experiences an alteration regarding its position and its distribution, which increases with increasing propagation ...
Duschek, Frank +7 more
core +1 more source
Propellants, Explosives, Pyrotechnics, Volume 44, Issue 9, Page 1084-1089, September 2019., 2019 Abstract This article gives a short review on compatibility and chemical stability of selected aqueous ADN and HAN‐based energetic formulations. A brief introduction will outline Energetic Ionic Liquids (EILs) as a new class of energetic materials with beneficial physical‐chemical properties which make them valuable for application in propulsion ...
Dominic Freudenmann, Helmut K. Ciezki
wiley +1 more source
Thermal Ignition of ADN‐Based Propellants
Propellants, Explosives, Pyrotechnics, Volume 44, Issue 9, Page 1096-1106, September 2019., 2019 Abstract Ammonium dinitramide (ADN, NH4+ N(NO2)2−) based monopropellants are extremely promising as hydrazine replacement. Thermal igniters are attractive for ADN thrusters as they allow a more prompt ignition and may be better suited for larger engines (100‐500 N) compared to the currently used preheated catalysts.
Michele Negri +2 more
wiley +1 more source
Standoff detection and classifcation procedure for bioorganic compounds by hyperspectral laser-induced fluorescence [PDF]
, 2015 The high and still increasing number of attacks by hazardous bioorganic materials makes enormous demands on their detection. A very high detection sensitivity and differentiability are essential, as well as a rapid identification with low false alarm ...
Aleksejev, Valeri +8 more
core +1 more source