Lithium batteries and brushless motors helped make multirotor drones possible, but batteries only last so long. Liquid fuels have far greater energy densities, but have not been widely applied in these roles. [Tech Ingredients] has been experimenting with a compact gasoline-fueled generator, with the aim to extend drone flight times well beyond what is currently possible with batteries (Youtube link, embedded below).
The build began with a single-cylinder, four stroke engine. However, torque spikes and vibration made things difficult. After some iteration, the design settled on employing two single-cylinder two stroke engines, fitted with a timing belt to keep them 180
Iran seizes two British tankers and makes a huge mistake Washington ExaminerCharlie Hurt: Iran seizing western oil tankers is ‘complete pirates on the high seas’ Fox NewsUS officials say Iran seized a British oil tanker CNNIran’s Revolutionary Guard seizes one UK-operated tanker in Strait of Hormuz, briefly detains another Fox NewsJim Hanson: US downing of Iranian drone is a warning to stop aggression and support for terrorism Fox NewsView full coverage on Google News
Iran says it has captured a British oil tanker: Live updates CNNIran’s Revolutionary Guard seizes two UK-operated tankers in Strait of Hormuz Fox NewsPresident Donald Trump says he will ‘speak to the UK’ after Iran seize a British oil tanker The SunIran seizes two British tankers and makes a huge mistake Washington ExaminerJim Hanson: US downing of Iranian drone is a warning to stop aggression and support for terrorism Fox NewsView full coverage on Google News
French tech manufacturer Parrot is exiting the mini drone market, the company confirmed this week.
Scientists recently discovered a 7-foot shark with a plastic strap stuck around its neck. (Photo Credit: Sulikowski Shark and Fish Research Lab / Facebook)
Scientists recently came across an alarming sight when they discovered a 7-foot shark severely wounded by a plastic strap around its neck.
The 7-foot creature, which was spotted by marine scientist James Sulikowski, grew for years with the plastic strap lodged around its gills and neck, The Charlotte Observer reported. Sulikowski shared photos of the injured shark on Facebook, which showed the shark’s head slowly being cut off by the taut plastic strap.
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