The developer said the Knyaz Vandal of Novgorod is already "number one among drones in terms of the ratio of successful kills to the total number of sorties" MOSCOW, March 26. /TASS/. The efficiency of the Knyaz Vandal of Novgorod FPV drone has been increased by 5% thanks to the use of new types of fiber optics and cable winding options, the general designer of the Knyaz Vandal of Novgorod engineering team told TASS. "The Vandal’s current upgrading means painstaking work down to the last detail: