Collaborate Disseminate
Earlier this month, we featured a Whale Design propeller that looked to nature for improved efficiency. Switzerland’s ABB Marine has also been inspired by “the dynamic motions of a whale’s tail” for its multi-blade Dynafin propulsion concept.Continue R… Continue reading ABB’s cycloidal marine propellers: Efficient thrust in any direction
Earlier this month, we featured a Whale Design propeller that looked to nature for improved efficiency. Switzerland’s ABB Marine has also been inspired by “the dynamic motions of a whale’s tail” for its multi-blade Dynafin propulsion concept.Continue R… Continue reading ABB’s cycloidal marine propellers: Efficient thrust in any direction
On paper, the motors from both an electric bicycle and a drone can both take about 500 watts or so of power. Of course, their different applications make them anything …read more Continue reading A Drone Motor Does e-Bikes
The problem of components not conforming to their claimed specification is one that must challenge engineers in all fields, including it seems, that of multi-rotors and remote controlled aircraft. A …read more Continue reading How Much Thrust Is Your Prop Really Making?
There’s great potential in salvaging a motor from a broken appliance, but so often the part in question is very specific to its application, presenting a puzzle of wires to …read more Continue reading Washing Machine Motors Unlocked
Somewhere in most engineering educations, there’s a class on induction motors. Students learn about shaded-pole motors, two-phase and three-phase motors, squirrel cage motors, and DC-excited motors. It’s a pre-requisite for …read more Continue reading Double Fed Induction Motors: Clever Motor Control Through Frequency
What is a brushless ESC, really? Well, generally, it’s usually a microcontroller with a whole lot of power transistors hanging off it to drive three phases of brushless motor coils. [Frank …read more Continue reading Brushless ESC Becomes Dual-Motor Brushed ESC With A Few Changes
After a long December of hand-coating chocolates for relatives last year, [Chaz] decided that enough was enough and built a chocolate enrobing machine to do the dirty work for him. …read more Continue reading The Chocolate Must Flow This Holiday Season
Any student new to the principles of fluid dynamics will be familiar with Bernoulli’s principle and the Venturi effect, where the speed of a liquid or gas increases when the …read more Continue reading Variable-Nozzle Ducted Fan Provides Fluid Dynamics Lessons
When you think of electric motors, you usually think of magnets. But magnets are heavy, and good magnets can pose problems when you need lots of them. A technology called …read more Continue reading New Electric Motor Tech Spins with No Magnets