Have a speaker on the drone putting out the noise cancelling, out of phase, sound. Noise problem sorted, right?! Anyone thought of this? The first two stories on BBC Click this week were about package delivery drones and then noise cancelling, so I put them together. Why aren't they noise cancelling wind turbines if they are too noisy?
This not solution. Its just like u said that if u dont want to be noisy then dont play drone. What we need is pass the limit with same condition (same speed, alt, even some component)
Sand off the part no. from the propellers and any remains from the casting......... ........and both the Airscrew and DJI standard sets of propellers will be CONSIDERABLY quieter ! (leftovers on the edges is a DISASTER for the micro aerodynamics of the propeller - and the letters seems to be a delibrate attempt to knock it completely off the rails - astounding that the DJI designers did not have the final say in this after all their effort to make the propellers perfect - the letters could have been imbedded in the material instead of made to stick out - on a perfect 90 degree angle from the surface maximizing the air resistance and micro turbulence - no wonder the noise !)
