Hey I am on Medialย โขย 11m
Noise products have worst build quality
เคฎเฅเค เคเค เคตเคฟเคเคพเคฐ เคนเฅเค (I ...ย โขย 5m
I have attended a seminar on Noise reduction technology of UAV (Quadcoptor). They used two things: 1. By changing blade profile of UAV propeller they have achieved 8dB reduction in noise. 2. By using phase control they have reduced noise by 6 dB. A
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