Show pageBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ======Table for relative burning rate====== {{ en:media::burnratiochart.png?30%&link}} The table shows the relative combustion of all propellant powders in the database. There is no standard for sorting such a table. In the published tables of different powder manufacturers or dealers, it is often very different, depending on the preference of the manufacturer. The most frequently used sorting method is **progressivity**. The table therefore allows different sorting according to different factors, which you can select above the table with buttons. **Important Note** The table for the relative burning rate serves only as a rough overview between the different manufacturers. The table makes no statement about how vivacious a powder actually is in the pressure characteristic! A powder listed in the table at the same level does not therefore mean that it is a 1:1 substitute for a specific powder! It only means that it is probably suitable for a similar application. ====Sorts==== ===Progressivity=== Sorts the table by the progressivity factor **//Bp//** of a propellant powder. The progressivity factor and its equation is GRT specific and calculated: <code> Bp = sqrt( (2 * (k - 1)) * pow(Ba * phi(z1) * Qex,2) ) / 10000; </code> ===Brisance=== Sorts the table by the (initial) explosive factor **//Br//** of a propellant powder. The explosive factor and its equation is GRT-specific and calculated: <code> Br = sqrt( (2 * (k - 1)) * pow(Ba * Qex,2) ) / 10000; </code> ===Brisance & Progressivity (combined) === Sorts the table using the combined Brisance & Progressivity factor **//Brp//** of a propellant powder. The combined factor and its equation is GRT specific and is the //second absolute moment //((the quadratic mean)) of both single factors: <code> Bp = sqrt( ( pow(Br,2) + pow(Bp,2) ) / 2 ); </code> By combining both factors, a more practicable approximation of the behavior of different propellant powders should be achieved. en/doku/burnratechart.txt Last modified: 2021/05/30 03:34(external edit) Log In