Ying Shaowen's question to Zhao Yi about engine fan blades providing power support was not intended for him to calculate on the spot, but rather to break up the debate at the meeting and send a 'let's wait until the calculation results come out' signal.
Surely, the calculation must be very complex, and it was unlikely to get results in a short period.
Even if Zhao Yi agreed to help with the calculation, it would take a long time because many factors would have to be considered. Then, a very complex calculation would have to proceed, which would take even longer.
Once the calculation was completed, the results could be used as scientific evidence for their discussions.