R. Meyer J. Köhler A. Homburg Explosives

End Burning Velocity
the propellant; in liquid fuel and hybrid rockets, reignition can take
place.
End Burning Velocity
Brennschlußgeschwindigkeit; vitesse en fin de combustion
Velocity attained by a rocket at the moment at which combustion
ceases. It is a function of the W Gas Jet Velocity, the W Mass Ratio,
and the burning time.
Endothermal
Reaction that occurs with the absorption of heat (opposite of exothermal).
Energetic Binders
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Energetische Binder; Aktive Binder; active Binders
In the realm of modern, nitric-ester-free W LOVA Gun Propellants, the
widely used inert binders consume energy and to some extend have
an undesirably high overall phlegmatizing effect on the explosivematerial.
The high filler content of an explosive substance has a detrimental
effect on the mechanical strength of this type of propellant.
An active binder would be a preferable alternative if it combined a high
energy content with favorable mechanical properties, together with a
thermal stability higher than that of W Nitrocellulose or of W Polyvinylnitrate
while remaining relatively uncomplicated to process.
At present, the difficult task of developing such improved active binders
has yielded only two usable compositions:
1. W Polynitropolyphenylene, a non-crystalline explosive material that
withstands high temperatures. This polymer is a gelatinous type of
binder and is combined with small amounts of softeners, inert
binders and W Hexogen or W Octogen. By means of organic solvents,
it is processed into the corresponding LOVA composition.
2. W Glycidyl Azide Polymer; a gas-producing glycerin derivate. The
glycidyl azide polymer belongs to the group of reactivive polymers
(thermoset materials) and is processed together with a main energy
conductor, small amounts of softener, inert binders, curing
agents and where necessary, accelerating agents. The type of
acceleration and curing agents is determined not only by the final
matrix structure, but also by the heat processing time of the respective
composition and especially by the processing temperature.