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What's the state of the art with regard to silent flying drones? Is it possible? As scary as these things look, a silent drone fleet would be truly terrifying.

What's the state of the art with regard to silent flying drones? Is it possible? As scary as these things look, a silent drone fleet would be truly terrifying. Imagine hiking along and turning around to that.

yreg 6y ago
There are some people looking into active noise cancellation[0], but I have no idea whether that's viable. A (more) silent drone will be huge for online shopping/meal delivery. Amazon has ambition to eventually deliver most packages to most places in matter of (tens of) minutes. [0] https://scholarworks.gsu.edu/cs_theses/98/ https://scholarworks.gsu.edu/cs_theses/98/
- amelius 6y ago
  > There are some people looking into active noise cancellation[0], but I have no idea whether that's viable. Birds do it all the time ...
  - yreg 6y ago
    What do birds do?
contingencies 6y ago
Gliders are effectively silent until propulsion is activated.