George Katz

@DanInvents More of a road dart. :)

@AirCommand A lawn dart?

Sometimes you hit the shutter button at the right time...

@kegrocket Bolt on a piece of round bar on the end with 3 bolts. Then grip the round bar.

Manufacturing Twitter: how do you dial in a hexagon on a 4-jaw independent chuck? Only 2 of the flats line up with the axes of adjustment.

Our club does a few outreach events every year and having something interactive for kids is always fun. I've made a controller they can use to "launch" rockets. It plugs into a USB port and runs a local webapp. The controller is made from the guts of a cheap $5 USB number keypad.

@joebarnard Next challenge, vary the grain and core geometry so that when the motor burns the thrust curve writes out BPS.Space in cursive. (or at least in Morse code)

Tried molding text into the top, not too bad!

120lb of propellant explo- I mean firing soon 🚀

@kegrocket @TurbulentSphere In Australia an M1297 reload will set you back about AUD$1,067 (~USD$700) and a M1939W costs $2,435 (USD$1,585)

@TurbulentSphere Same. The most baby M motor should cost approximately $85 not $350+ per shot

Buying this has made me want certified liquids more than anything holy shit

Many model rockets have a fairly empty airframe. Why not fill that space with compressed air and augment the thrust of your solid motor for more performance? The proof-of-concept AirHawk successfully flew twice today! Video coming soon. (100psi + C6-3 motor).

@BenKrasnow Awesome video Ben. I've never seen the process of welding in such detail. Keep up the great work!

New video! Welding visualization system uses intense pulsed lighting to outshine electric arc, laser cutter youtube.com/watch?v=wSUxK8… krontech.ca/product/helios/

This is AirHawk. Looks innocent enough. We'll be testing 5 new concepts with it tomorrow. Lots of unknowns. The bottom end looks strange. Can't show the launcher as it may give clues to what we are testing. If all goes well, we'll scale it up!

@joebarnard Joe looking to set up a 'Math' Lab in the desert :)

Been in the desert all day looking for land to set up a propellant mix site. It’s so beautiful and strange. How did this tricycle get out here? Creepy!

Here is the full length video of our World Record flight from last year. It goes into details of launch day operations, the launch, and flight data analysis. Includes special announcement at the end of the video. youtu.be/xm-tGJxepUw

@joebarnard @parkerjwaugh Here is one coming in hot ... youtu.be/cROVwjIZa1Q?si…

This is my shot of @parkerjwaugh's ill fated BBR rocket - Also AVA's first HPR flight! Unfortunate flight, but it made for a fun video youtu.be/Z3Lhhg_Nb20?si…

Looking for some footage of amateur rockets coming in ballistic without chutes! Anyone have a favorite?

New Horizon video is now out! youtu.be/1jlvHdWMxcI I thought I'd try a different intro/outro this time. It sure got plenty of looks at the beach. :)

Almost finished Part #42 of the Horizon series video. It took a bit of time to edit this one, it will be about 24 minutes long. This video covers us finishing the rocket to get it ready for flight. The next video after this will be the full length launch day operations.

Part 40 of the Horizon series is now out. youtu.be/wN_y9zaL-2c We cover the booster's parachute deployment, it's twin camera package, and the upgrades to the sustainer deployment. We also perform booster electronics flight tests.

Happy New Year! I'm finally getting around to finishing the next video in the Horizon series. This one covers details of the parachute deployment mechanisms. I'm hoping to have that done in the next few days.

@CodysLab Perhaps the missing anti matter ended up inside of early black holes alongside regular matter? It's not like it is getting out but we will still feel it's gravitational effects.

I feel like the answer to why there wasn't an equal amount of matter and anti matter in the universe is that everything we see and interact with is the remains of one virtual particle that got separated from its anti counterpart by sudden expansion of space. Thoughts?

@joebarnard Good luck Joe! The main question is... BBQ sauce or not?

Flying Saturday to Mach 3 and 30,000ft! All surfaces control pitch and yaw at a low rate with a really smoothed input. This should keep things pretty tame for what is objectively a high risk flight. The top two surfaces mix in roll control

@joebarnard SpaceX tapping their foot, checking their watch in line behind Joe at the FAA

good morning