Unmanned aerial vehicle ignition method for dispersive torch

The invention discloses an unmanned aerial vehicle ignition method for a dispersive torch. The unmanned aerial vehicle ignition method comprises the following steps of: (S1) making an unmanned aerialvehicle fly to a horizontal position which is 0.5 m to 1 m away from the top end of the dispersive torch; (S2) slowly opening a valve of the dispersive torch to make sure that flammable gas overflowsfrom the top end of the torch; (S3) starting a liquid spray program of the unmanned aerial vehicle to make the unmanned aerial vehicle spray out flammable liquid to the top end of the torch; (S4) starting an ignition program of the unmanned aerial vehicle and igniting the flammable liquid by using an electric igniter of the unmanned aerial vehicle; and (S5) igniting the flammable gas at the top end of the torch. According to the method disclosed by the invention, the unmanned aerial vehicle which is stable in performances is used as a carrier and cooperates with an unmanned aerial vehicle igniting device, the unmanned