tingilinde

a fairly deep dive into the european satellite navigation system

The Galileo system is more advanced than the current American GPS system, but has had some serious teething problems.  A look into an outage in July with a lot of interesting commentary.

An interesting thought experiment is what would happen if the American system went dark?  (hint - there are uses other than navigation.)  One of the emergency plans after 911 was to shut down the civilian side of the system if it looked like a drone based terrorist attack was underway.  No idea if that's still considered viable. 

 

acoustically driven 3d displays

I first heard about this in a BYU display about a year ago.. others are refining the idea.

 

amateur thrust vectored rockets

Sticking vertical landings like SpaceX

so cool

the bloodhound begins the hunt

The on-again, off-again 1000mph land speed record project is clearly on again and is now testing with just the jet engine.  They've just topped 500mph.  Videos of the project here.

 

baking cookies in microgravity

An oven for the International Space Station.

 

musical typewriter

When I think of musical typewriters Leroy Anderson comes to mind.

 

But this is the real thing  and very cool.

aerospikes

Ah aerospikes - the magic rocket engine. I haven't heard about them since the 80s  Bart points to an excellent history and primer.  If you're interested in rocket motors, this is a must watch.

 

perhaps a practical axial flow motor?

A Belgium firm says they have a way to mass produce a novel electric motor that has an incredible power to weight ratio - very handy if the motor goes into the wheels (less sprung weight)

a tip of the hat to Bjarne

 

 

iOS 13 hints for iPads

Some of the gestures aren't initially intuitive - here's a guide.

 

the drone wars heat up

Skydio has a drone to challenge the Chinese firm DJI.  The video on their site shows its capabilities.