Why jet engine fans grew from about one metre on the 727 to 3.4 metres on the GE9X, and what it did to their sound: a slower fan, a lower blade tone, a longer wave and a deeper liner cell.
Why jet engine fans grew from about one metre on the 727 to 3.4 metres on the GE9X, and what it did to their sound: a slower fan, a lower blade tone, a longer wave and a deeper liner cell.
