[Matthew Heiskell] blew these numbers out of the water with a 10 hour 45 minute flight with an RC plane on battery power ... The airframe is a Phoenix 2400 motor glider, with a 2.4 m wingspan ...

most often for full-scale sailplane or hang glider pilots. Almost every full-scale plane has a variometer as part of its suite of gauges – usually called a rate of climb or vertical speed indicator.

Most people complain when their 3D printers start “air printing.” This is what we call it when your printer has a major clog gumming up the hotend, while the rest of the machine continues to ...