R. Meyer J. Köhler A. Homburg Explosives

237 Octogen
Nozzle
Düse; tuyère
Mechanical device designed to control the characteristics of a HY-
PERLINK “http://encyclopedia.thefreedictionary.com/fluid” fluid flow
from a chamber into an outer medium.
In rocket technology it is intended to increase the HYPERLINK “http://
encyclopedia.thefreedictionary.com/kinetic+energy” kinetic energy of
exhaust fumes by reduction of pessure energy or HYPERLINK “http://
encyclopedia.thefreedictionary.com/internal+energy” internal energy.
A HYPERLINK “http://encyclopedia.thefreedictionary.com/de+Laval+
nozzle” Laval nozzle, as often used, has a convergent section followed
by a divergent section. Convergent nozzles accelerate fluids even up
to the sonic velocity at the smallest cross section if the nozzle pressure
ratio enough. Divergent nozzles decelerate subsonic flowing
fluids and accelerate sonic or supersonic fluids.
Obturate
Verschluss; dispositif de clôture
To stop or close an opening so as to prevent escape of gas or vapor, to
seal as in delay elements.
Octogen
cyclotetramethylene tetranitramine; Homocyclonit;
cyclotétraméthyléne tétranitramine; Octogéne; HMX
colorless crystals
empirical formula: C4H8N8O8
molecular weight: 296.2
energy of formation: +84.5 kcal/kg = +353.6 kJ/kg
enthalpy of formation: +60.5 kcal/kg = +253.3 kJ/kg
oxygen balance: –21.6%
nitrogen content: 37.83%
volume of explosion gases: 902 l/kg
Explosives. Sixth Edition. Rudolf Meyer, Josef Köhler, Axel Homburg
Copyright © 2007 Wiley-VCH & Co. KGaA, Weinheim
ISBN: 978-3-527-31656-4