Szczegóły publikacji
Opis bibliograficzny
Performance of solid emulsions of isoamyl alcohol in EVA-stabilized low-MW polyethylene structured by laser-sintered polyamide scaffolds as fuels in $N_{2}O$ hybrid rocket engine / Dominik Zdybał, Wojciech Kłos, Przemysław Drożdż, Zuzanna Rydz, Konrad KOBUS, Bartosz Wyciszkiewicz, Agata Zwolak, Maciej Wyżliński, Tomasz Tatara, Aleksander Guzik // W: AIAA Propulsion and energy 2019 forum [Dokument elektroniczny] : 19–22 August 2019, Indianapolis, IN, [USA]. — Wersja do Windows. — Dane tekstowe. — [USA] : American Institute of Aeronautics and Astronautics, [2019]. — e-ISBN: 978-1-62410-590-6. — S. 1–19 ID AIAA 2019-4335. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 18–19. — Publikacja dostępna online od: 2019–08–16. – Dostęp po zalogowaniu. — K. Kobus - dod. afiliacja: Sinterit Sp. z o. o., Kraków. — D. Zdybał - dod. afiliacja: University of Cranfield, UK
Autorzy (10)
Dane bibliometryczne
| ID BaDAP | 127936 |
|---|---|
| Data dodania do BaDAP | 2020-03-30 |
| DOI | 10.2514/6.2019-4335 |
| Rok publikacji | 2019 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
Abstract
Hybrid rocket fuels based on polyethylene wax (PEWAX) are prone to thermal stress cracking. This can be mitigated by addition (doping) with high molecular weight polymers like ethylene-vinyl acetate copolymer (EVA), as these additives increase mechanical parameters. This approach comes with a drawback of greatly increased melt viscosity, which severely impacts the regression rate. In a pursuit of high regression rate, mechanically stable compositions, we propose the use of SLS 3D printed Nylon-12 scaffolds, which offset the EVA content required for stabilization to lower values. In order to promote combustion efficiency, instead of having PEWAX/EVA as a matrix, we utilize (PEWAX/EVA) + alcohol solid emulsions, investigating promotion of “secondary atomization”. Samples were tested for Charpy impact and compression strength to evaluate the effectiveness of toughening. FEM simulations were done in order to estimate structure-property relationships. Morphology of solid emulsions and microstructure of sintered scaffold material were evaluated using optical microscopy and SEM. We estimated the effect of alcohol on viscosity, based on Ford cup viscosity measurements. Most promising fuel formulations were hot-tested in a 3-5 kNs N2O hybrid rocket engine. © 2019 by American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
