Burn rate
The burning rate r describes the stationary burning of an explosive . It is usually given in mm / s. The pressure dependency of the burn-up of an explosive describes the Vielles law
with a being the exponential factor ([a] = mm / (s · Pa n )), which indicates the influence of temperature on the burning rate, p is the prevailing pressure ([ p ] = Pa ) and n is the dimensionless pressure exponent.
The product of charge density , specific energy and burn rate is explosive (chemistry) .
The many parameters of a propellant charge are the main criteria according to which the propellant charges are selected for the respective purpose.
In short-barreled weapons ( pistols and revolvers ), propellants with a high burn rate (offensive powder) are used. Propellant charges with a high burn rate are also used for shotgun cartridges .
For long guns and those that have to accelerate high projectile masses, slow-burning propellants, so-called progressive powders, are used .
The burning rate is influenced by the following parameters, among others:
- Chemical composition
- Surface texture
- Additives
- temperature
- pressure
See also
- Detonation rate - the corresponding value for explosives
Web links
- Burn rate (accessed April 9, 2020)
- Fire behavior of wood and wood-based materials (accessed on April 9, 2020)
- Classification system for the fire behavior of different types of wood (accessed on April 9, 2020)
- Influencing variables on the charring behavior of wooden components and their consideration in empirical and numerical assessment procedures (accessed on April 9, 2020)
- Investigation of the burn-off and combustion gases of selected types of wood depending on the chemical and structural wood structure (accessed on April 9, 2020)
source
This article is based on the article burn rate from the free encyclopedia WaffenWiki and is available under the GNU Free Documentation License . A list of the authors is available in the WaffenWiki . |