Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Helmut Ciezki"'
Publikováno v:
International Journal of Energetic Materials and Chemical Propulsion. 19:53-63
In the following paper a test setup to analyze the flow of gels in a constriction is presented as well as some results of the tests performed with this setup. Different gels and a Newtonian fluid were pressed through a test geometry, which is a pipe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b174b4414257d7cfd5038f38b3725de5
https://doi.org/10.1615/intjenergeticmaterialschemprop.2019028136
https://doi.org/10.1615/intjenergeticmaterialschemprop.2019028136
Autor:
Dominic Freudenmann, Helmut Ciezki
Publikováno v:
Propellants, Explosives, Pyrotechnics. 44:1084-1089
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 bene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67cbe85404ab5a1deed207bbf20c5fdf
https://doi.org/10.1002/prep.201900127
https://doi.org/10.1002/prep.201900127
Publikováno v:
Propellants, Explosives, Pyrotechnics. 44:1096-1106
Thermal igniters are attractive for ADN thrusters as they allow a more prompt ignition and are better suited for larger engines (100-500 N) compared to the currently used preheated catalysts. Two thermal ignition methods, resistive and laser, were te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::638822b2cdb5c564de648f6159f99d88
https://doi.org/10.1002/prep.201900154
https://doi.org/10.1002/prep.201900154
Autor:
Torsten Methling, Lukas Werling, Marius Wilhelm, Konstantin Manassis, Corina Janzer, Helmut Ciezki, Clemens Naumann, Uwe Riedel, Till Hörger, Elke Goos, Stefan Schlechtriem, Sandra Richter, Daniel Grimmeisen, Chiara Erdmann
Publikováno v:
AIAA Propulsion and Energy 2020 Forum.
In 2014 DLR started research activities focused on premixed monopropellants consisting of nitrous oxide and hydrocarbons. Those propellants offer promising characteristics as they are non-toxic, deliver a high Isp consist of components with low cost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20bcdadcd56e692fe81910ee795f08e2
https://doi.org/10.2514/6.2020-3807
https://doi.org/10.2514/6.2020-3807
Publikováno v:
International Journal of Energetic Materials and Chemical Propulsion. 17:217-228
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17cda51779031cfce5e7d0069391245b
https://doi.org/10.1615/intjenergeticmaterialschemprop.2019027996
https://doi.org/10.1615/intjenergeticmaterialschemprop.2019027996
Gel propellants offer the possibility to build throttleable and versatile propulsion systems with easy handling and improved operational safety. The combination of performance flexibility and storage characteristics merges the major advantages of liq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa07dc8b59803344a70759cfaf1f10c1
https://elib.dlr.de/133854/
https://elib.dlr.de/133854/
Across the world several so-called green propellants for in-space and orbital propulsion are investigated to replace the highly toxic hydrazine. Aside from green alternatives based on ADN and H2O2, the DLR Institute of Space Propulsion examines a pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a3f517991db16bf3bc41f7be94f1ccf
https://elib.dlr.de/126735/
https://elib.dlr.de/126735/
As of now, the most widely used hypergolic fuels are hydrazine derivates with nitrogen tetroxide as the oxidizer. The toxicity and carcinogenic character of these substances make their handling challenging even if gelled. Therefore, there is great in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f32ba8ff486303ca81a4c72b745c538
https://elib.dlr.de/126416/
https://elib.dlr.de/126416/