We all know about the kind of unavoidable exasperating noises that are generated by propeller blades of drones during their operation. While Amazon is developing…
Tag: airflow
Event of the Day – On October 27 is celebrated as Flag Day in Greece. Here is an patent for an artificial wind producing flag pole assembly for providing airflow in windless conditions
On October 27 is celebrated as Flag Day in Greece. Here is an patent for an artificial wind producing flag pole assembly for providing airflow…