Month: January 2025

Mix and Matching Propellers Reduces Noise

Have this article read to you at https://youtu.be/8NtnwJD1JOc It took some outside-the-box thinking by the folks at Aurora, a Boeing-owned company, to arrive at this invention. They asked the question “but Why are drones so loud?” The answer is not so simple: constructive interference. When a propeller spins, it has a noise profile. This noise […]

Airborne Battery Swapper for Telecom Drones

Have this article read to you at https://youtu.be/PwO2aP6jPXs Ericsson (the Swedish telecommunications giant) has applied for an interesting invention: a UAV that can swap batteries of other UAVs mid-flight. Why would Ericsson need an electric air refueling tanker? Because they want to provide telecommunication services using drones. Imagine being on a search and rescue mission […]