During certification, the new domestic import-substituted MC-21-310 aircraft with domestic PD-14 engines accelerated to a ground speed of 1026 km/h. This was reported by the analytical blog "Flying Together."
The flight took place in the area of Zhukovsky airfield on December 18. In the air, the crew spent 3 hours 15 minutes, the maximum altitude was 12,100 m.
In this flight, the aircraft reached its maximum altitude and ground speed.
It should be emphasized that ground speed is the actual speed of the aircraft relative to the ground; it consists of the vessel's own speed and the wind speed.
In other words, if the wind is a tailwind, the ground speed is higher, and the aircraft flies faster relative to the ground. If the wind is a headwind, the ground speed is lower.
It should be noted that according to the technical passport of the MC-21 on the official website of the United Aircraft Corporation, the cruising speed of the MC-21-310 with PD-14 is 870 km/h, which corresponds to Mach 0.82. The practical ceiling is 11,500 m.
Just a few days ago, information appeared that the MC-21 flew at a speed of 890 km/h.
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