This is achieved by the ratio of the height and width of the nozzle, significantly reducing the temperature of the outgoing jet. In addition, this configuration allows the combat vehicle to become less visible to enemy radars. An experimental sample of the S-70 made its first flight on August 3, 2019, which lasted more than 20 minutes. Attack unmanned aerial vehicle 'Hunter' developed at the Sukhoi Design Bureau. In the near future, this apparatus will be controlled by an automated system without manual control. In the same year, the first joint 30-minute flight with the Su-57 fighter was performed. https://tvzvezda.ru/news/202112141049-nI7VH.html Истoчник aif.ru Unmanned aerial vehicles of this class cannot be assembled from components available on the market, unlike a number of foreign counterparts. The Su-57 itself determines the purpose of the target, and the Hunter attacks them using information from the aircraft. S-70 'Hunter' made according to the “ flying wing '' scheme with the use of stealth technology, which reduces its radar signature. In the future, a heavy attack drone is capable of hitting targets on command from the Su-57 fighter. Roll-out of the first flight model of the newest Russian attack drone S-70 “ Okhotnik '' took place at the Novosibirsk Aviation Plant (NAZ) named after Chkalov. The infrared radiation of an aircraft using this nozzle shape is also reduced. But the advantages of a flat nozzle outweighed the disadvantages, according to the developers. According to representatives of the Ministry of Defense, only countries with a developed aviation industry are capable of producing UAVs of this class, which provides a full cycle from design to manufacture and conduct of all types of tests, as well as the development and production of all necessary ground and airborne equipment. The second drawback & mdash; this is the need to increase the rigidity and strength of the nozzle, because a structure of this shape is subjected to a greater load than a circular nozzle. This is due to the fact that the contours of the circular nozzle are very difficult to match with other structural elements of the aircraft in order to make the aircraft less visible to radars. In addition, in order to further reduce the radio signature, materials capable of absorbing radiation are used in the manufacture of such a nozzle. It is much easier to achieve this if you use a flat 'reactive' nozzle. The mixed air regiments will radically strengthen the capabilities of the Aerospace Forces, experts say. 'Hunter' is a highly intelligent system capable of solving a wide range of tasks individually, in a group and together with manned aircraft. Its length is 14 meters, wingspan & mdash; 19 meters. True, in the transition from a circular cross-section of the engine to a rectangular nozzle, there is some pressure loss & mdash; efficiency decreases slightly. This means that the build of & mdash; the sample is fully equipped with the necessary equipment and is preparing to practice its first flight. Experts also draw attention to the fact that the presented drone turned out to be a flat drone jet nozzle grown on a 3D printer. In the UAV, advanced achievements are concentrated, which made it possible to provide functional capabilities that are not inferior, and in a number of parameters surpassing a few foreign counterparts. This design feature improves the takeoff and landing characteristics of the aircraft and makes it more maneuverable. According to open sources, the takeoff weight of the vehicle is up to 20 tons, the maximum flight speed & mdash; about 1,000 km/h. It is expected that the S-70 “ Okhotnik '' unmanned bomber will enter service with the Russian army from 2024.