I loathe leaf blowers, so I often wonder what the acoustic design limits for a high speed air moving device are. How quiet could it be if the air source was impractically far away, and the business end was just a carefully engineered duct? Could the tone be changed into \
something more pleasant, like a loud woodwind instrument? I suspect the best answer is to change the question, and engineer better automated rakes and brooms instead of blowing things around.
@ID_AA_Carmack There are multiple HOAs that are starting to outlaw them, at least the gas powered ones.
@ID_AA_Carmack Designing a muffler worth a damn would be a great... If we had rules for small engines the way we do for our cars, leaf blowers would be significantly quieter.
@ID_AA_Carmack Dyson could do it. Loud sound will probably arise from vortex shedding in the output structure or vibration. High modulus of elasticity materials and proper laminar flow design will enable fast flow without noise. Using an electric motor would be silent
@ID_AA_Carmack Battery electric leaf blowers are better than ICE (engine) lead blowers.
@ID_AA_Carmack The electric ones aren’t so bad. Gas powered leaf blowers are among the most annoying devices on the planet. They rank up there with automobile extended warranty programs and the iPhone “enable dictation” button.
@ID_AA_Carmack You ste not alone i cant stand leaf blowers. Noise pollution second only to home and camping gas powered generators
@ID_AA_Carmack Electric leaf blowers solve this theatlantic.com/magazine/archi…
@ID_AA_Carmack My whole house vac sounds like a quiet suction on the vac end and very loud in the basement/outside near the exhaust.