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Processes during the Hypergolic Ignition between Monomethylhydrazine (MMH) and Dinitrogen Tetroxide (N 2 O 4 ) in Rocket Engines
Author(s) -
Frank Irmgard,
Hammerl Anton,
Klapötke Thomas M.,
nenberg Christel,
Zewen Helmut
Publication year - 2005
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.200400084
Subject(s) - methylhydrazine , rocket (weapon) , ignition system , rocket propellant , chemistry , combustion , liquid propellant rocket , autoignition temperature , aerospace engineering , propellant , organic chemistry , engineering
Two potential sources for engine complications with methylhydrazine/nitrogen tetroxide rocket engines were examined. The products formed during a cold pre‐reaction before the actual ignition of the rocket engine and their later behavior were investigated with Car‐Parrinello molecular dynamics simulations. It was found that methyldiazene is the main product of the cold pre‐reaction. As a side product, especially in the presence of an excess of methylhydrazine, dimethyltetrazanes are formed. These may be responsible for violent side reactions.