Originally Posted by
Wokkafans
Any idea on the black smoke before launch?
Pyrotechics for ignition, although it looks more like an oily rag;
"Motor operation starts from the moment the launch command in the form of current is given to the pyropropatron wire bridge through the electrical circuit of the rocket system. The wire bridge is instantly inflamed, igniting the ignition composition of the pyropropatron and its pyrotechnic composition. The resulting gases, breaking through the bottom of the pyropropatron, ignite the main ignition hangar. The mass of the formed gases and their thermal energy is enough to create the necessary conditions for the ignition of the fuel charge and its sustainable combustion"