Overview

• The CoulombFly drone weighs just 4.21 grams and is propelled by an efficient electrostatic motor.
• It can maintain flight for an hour under natural sunlight without performance degradation.
• Researchers aim to use this technology for communications, search-and-rescue, and surveillance.
• Current limitations include mechanical failures and the need for nighttime energy sources.
• Further development is needed to increase payload capacity and flight control capabilities.