Future research should focus on the following areas:
The Su-57 and F-35 have similar performance characteristics. Both aircraft have high thrust-to-weight ratios, allowing them to accelerate quickly and climb steeply. The Su-57 has a maximum speed of around Mach 2.1 (1,600 mph), while the F-35 has a maximum speed of around Mach 1.6 (1,200 mph).