Category Archives: Technology and Society

Eating Healthy

Yes, it’s possible to do it on a budget. The problem with this is that the USDA guidelines are terrible:

The menus offered a variety of food, didn’t have processed foods, were affordable and didn’t require always require cooking to prepare. Each menu also had manageable portions of food without high fat or salt content.

There’s nothing intrinsically wrong with high fat or salt content, as long as the fat isn’t seed oils.

Roscosmos

is acting left behind.

It’s not really acting. They have been left behind.

But, while I like Sandy, this kind of thing continues to drive me crazy.

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]