Schools Of Education

They remain a disaster, that should have been abolished long ago.

BTW, I highly recommend Quillette as a web site in general. Claire and others have a lot of smart, heterodox stuff there.

EXOS Aerospace

It looks like they had a successful suborbital test of SARGE today at Spaceport America (after the earlier successful launch of Crew Dragon early this morning).

[Tuesday noon update]

Russ Blink just posted an explanation of the wobble at Arocket:

The wind picked up as we approached launch and the torque due to the fins at liftoff was getting pretty high, that caused the initial pitch angle and the control PID is pretty close to critically damped, which of course needs to be addressed, however it settled down nicely until we hit a high wind shear which it damped out slowly again after passing through. Still she was heavily influenced by the wind which we are addressing.

The fins on this flight were actually hurting us because of weather-cocking. We intend to remove or reduce them in the future when we have good aero data or modeling to tune the control part of our gnc for that condition.

For those curious in comments…

[Bumped]

Biting Commentary about Infinity…and Beyond!