It’s fair to say that one of the most exciting and innovative inventions to have come out of the modern era are drones. More and more of them are being bought and flown every single year, and as technology advances, their capabilities seem to know no bounds. With new ways of flying them, ultra HD cameras and batteries with ever increasing lifespans, todays unmanned aerial vehicles are truly incredible. However, some of them (if not most of them), are noisy and that annoying buzz can be hard to ignore; others in the vicinity when they’re being flown might even be driven to register a complaint. So, can anything be done to eliminate or reduce that annoying buzz from the rotors, engines and electronic parts?
Silent drones – do they exist?
The straightforward answer is no, they do not exist. For as long as drones have moving parts that keep them in the air, they will always make a certain amount of noise. The vibrations from the moving parts will always be audible, however, many makers are working hard to design and make drones that are quieter than their predecessors.
What are the noise levels of a drone?
In flight, a drone registers at around 75 to 80 decibels and a quiet one is usually considered to be one that registers at 65 to 70 decibels when flown 3 to five feet from the pilot.
Stealth drones used by the military:
Although most of the details are kept secret by the military, it is widely believed that they are using stealth drones which may achieve true silence or can at least be described as inaudible when in flight. Whether these will ever be made available for public use or purchase is anyone’s guess.
Why would a silent drone be so useful?
Aside from the fact that the noise of a drone in flight is annoying, it can also drown out all the sound on a video recording, making them virtually unusable for audible recordings. Even if you only want to record a video for visual purposes, the background noise of the drone will be very distracting. A silent drone would also be useful when used for surveillance purposes, since it wouldn’t give the location away when monitoring someone.
Key features of a quiet drone:
A good, silent or very quiet, drone, needs a sturdy, thick body that can cover all the internal features and mechanisms such as the motor and battery – areas that can create a lot of noise – and give less space for the annoying sounds to be omitted from. Vibrations also need to be minimised, and this can only be achieved by a drone with good physical features that dampen those vibrations.
Stores may not be selling fully silent drones anytime soon, but with the way technology is advancing, and with more money being invested in the entire drone industry, it won’t be long before something much quieter is available for the general public to buy.