The imported SJ-100 aircraft with PD-8 engines will soon be in the sky: the airliner is undergoing the final stage before flight tests

by alex

Frequency tests – the final stage before the start of flight tests

In Komsomolsk-on-Amur, ground tests of the imported SJ-100 aircraft with PD-8 engines are coming to an end — this is the third prototype with tail number 97003. Now the airliner is at the frequency tests — This is the final stage before the start of flight tests.

During frequency tests, data on vibrations of all structural elements is collected. Positive test results will confirm the airliner’s resistance to the phenomena of flutter (unstable vibrations of the wings, which can lead to the destruction of the aircraft) and shimmy (intense vibrations on the steering wheels of the landing gear when the aircraft moves along the ground at high speed, which can lead to the destruction of the landing gear).

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