Critical reactions for the hydrazine vapor detonations

A detailed kinetic model devoted to the hydrazine vapor detonation has been built. It consists of 33 reversible reactions and 13 species. A reduced ki netic model has been proposed by using the Principal Component Analysis of matrix F (PCAF) method as implemented ill KINALC. It is constituted of 26 r eactions anti 11 species. This: model has been shown to be valid ol er a pr essure range of 0.1 to 10 atm. However, the predictions of the models are s ignificantly affected by changes: in the enthalpy of formation of N2H3. Wit h the help of the full kinetic model, a value of A, the proportionality fac tor in the ZND model between the induction distance in the detonation cell size, of 27.5 +/- 3.0 has been derived if one considers that the collision efficiency of N2H4 on the thermal decomposition of hydrazine is equal to th e orle of N-2. The value of A for pure hydrazine detonation is: shown to be strongly dependent on the value of the collision efficiency of N2H4.