However, it is not so unambiguous. The material stated that for most modern fighters, including SU-57, acceleration usually lasts from 15 to 25 seconds, depending on the amount of load, the engine thrust and the length of the runway.
Meanwhile, the result of 12 seconds raises the question: is it possible to repeat this maneuver in real combat conditions? After all, such a reduction in the take -off time of the Russian fighter can be achieved both through the use of fossain cameras and minimal load. In the published video, the Su-57 fighter is accelerated by the runway without noticeable weapons and with minimal fuel loading.
This allows the aircraft to quickly reach the required speed of 250-280 km/h to break away from the ground. Another factor is to switch on the excel cameras that provide the maximum draft of AL-41F1 engines. Therefore, in such "greenhouse" conditions, the aircraft really demonstrates outstanding characteristics, but it is far from similar results in combat configuration.
After all, in reality, the Su-57 should be carried by the missiles of the Air-Air and Air-Earth class, as well as to have a supply of fuel needed to fulfill the combat mission. The observers came to the conclusion that the main cause of the short take -off is the weight of the aircraft and in fact the minimum aerodynamic resistance due to lack of weight. In the video, it starts with light parameters-about 18-20 tons.
But in the full combat configuration, the Su-57 mass can exceed 35 tons, which requires a much larger strip for acceleration. Thus, even powerful AL-41F1 engines cannot compensate for these restrictions, so the SU-57 battle will fly longer than shown in the exhibition video. With minimal loading and on the furniture on, other modern fighters also show rapid take -off.
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