Successful experiment of balloon drones flying with sound waves
Tokyo: Can drones be pushed by sound waves?
Answering “yes”, Japanese experts have created a large balloon drone with cameras mounted on it. This balloon moves beyond sound waves but no one can hear the sound. This will pave the way for silent and harmless drones.
NTT DoCoMo, a Japanese mobile phone service provider, says that despite all the advances, drone wings are very noisy and can be damaged in the event of an accident. This is because the drone’s wings move at a speed of thousands of cycles per minute.
Balloons commonly used at exhibitions and fairs are filled with helium and are adorned with advertisements. But they only have petals to move them around. They can be fatal in the event of an accident.
Now NTT DoCoMo has created an oval balloon with a powerful camera underneath. It has an ultrasonic speaker-like transducer on the right and left. They vibrate and pressurize the air, causing the balloon to move in a certain direction. There is no harm in touching these transducers and there is no harm in case of an accident. This requires very little energy compared to electric motors and petals. During this time the helium gas inside the balloon keeps it suspended in the air.
According to the company, commercial production will start from March next year. It will have additional safety features and LEDs that will serve entertainment and advertising purposes.