Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.142 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015011276
pages 71-84

HYPERGOLIC IGNITION MECHANISM OF HYDRAZINE/NITROGEN TETROXIDE CO-FLOWING JETS AT LOW TEMPERATURES

Hiroumi Tani
Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaarki, Japan
Hiroshi Terashima
The University of Tokyo, 2-11-16 Yayoi, Bunkyo, Tokyo, Japan
Yu Daimon
Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki, 305-8505, Japan
Mitsuo Koshi
Yokohama National University, 79-7 Tokiwadai, Hodogaya, Yokohama, Kanagawa, Japan

RÉSUMÉ

Hydrazine (N2H4)/nitrogen tetroxide (NTO) co-flowing jets were simulated to explore the hypergolic ignition processes in N2H4/NTO bipropellant thrusters. The Navier−Stokes equations with a detailed chemical kinetics mechanism were solved by direct numerical simulation to reveal the influence of the distinct chemical reaction; i.e., hydrogen abstraction by nitrogen dioxide (NO2). In the ignition processes, the hydrogen abstraction sequence, especially the reaction of N2H3 and NO2, played a significant role in preheating the mixture gases and it was significant in the NTO-rich conditions rather than in the specifically stoichiometric conditions. Thus, in the N2H4/NTO co-flowing jets, the preheated regions correspond to the regions where the NTO-rich flows existed and contacted the N2H4 jet. The ignition eventually occurred in the region where NTO has sufficient concentration. Hence, it was found that the ignition timing and position strongly depend on whether the unsteady behavior of the NTO jet provides appropriate environments for the hydrogen abstraction reactions.


Articles with similar content:

KINETIC MODELING OF HYPERGOLIC IGNITION OF N2H4−NTO MIXTURES AT LOW TEMPERATURES AND THE SAWYER−GLASSMAN EXPERIMENT ON REACTIONS OF N2H4 WITH NOx (x = 1, 2) AT HIGH TEMPERATURES
International Journal of Energetic Materials and Chemical Propulsion, Vol.14, 2015, issue 5
Ming-Chang Lin, Putikam Raghunath, Bi-Ren Gu, Gary C. Cheng, J. S. Wu, Y. S. Chen
Characteristics of hydrogen jet diffusion flame blow-off in the air cross flow
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2015, issue
V. V. Lukashov, R. Kh. Abdrakhmanov, Mikhail P. Tokarev
EFFECTS OF FLUORINE-CONTAINING SPECIES ON THE IGNITION AND COMBUSTION OF BORON PARTICLES: EXPERIMENT AND THEORY
International Journal of Energetic Materials and Chemical Propulsion, Vol.5, 2002, issue 1-6
Carl Gotzmer, Abdullah Ulas
EXPERIMENTAL INVESTIGATIONS OF COUNTERFLOW DOUBLE FLAMES APPLICABLE TO AN INDUSTRIAL NATURAL GAS-FIRED BURNER
International Journal of Energy for a Clean Environment, Vol.7, 2006, issue 3
Mohamed Pourkashanian, Leonardo P. Rangel, L. M. Fletcher, A. Williams
MECHANISMS OF FIRE SUPPRESSION BY HALONS AND HALON REPLACEMENTS: A REVIEW
International Journal of Energy for a Clean Environment, Vol.4, 2003, issue 2
O. C. Kwon, C. H. Kim, G. M. Faeth