Comment Re:Did it really go ok? (Score 4, Informative) 383
The booster is supposed to tumble after separation, that is its design. Look at its closest twin, the Shuttle SRBs, and you will notice that they tumble immediately after they are separated.
That is by design. On the shuttle,
The SRB's continue to ascend in a slow, tumbling motion for about 75 seconds after SRB separation, to a maximum altitude of about 220,000 feet. The SRB's then begin to quickly fall toward the Atlantic Ocean.
The Ares SRB derivative uses a very similar system. That in mind, 1st stage tumbling is okay.
As for second stage tumbling, that was almost certainly due to being an unpowered can, for all intents and purposes. While the mockup used in today's flight has the same mass and aerodynamic shape as the real thing, it does not have thrust.
There may also have been some contact, and it is there that something could well be learned. Could be that a stronger retro motor is needed on the second stage coupled with a stronger sep motor on the 2nd. That will come out in the reports that will be filed later.
This was a test, after all, and a good one: it proved that Ares can fly. It flew quite well for some time, and it looked smoother than we may have expected. No obvious pogo-ing, for example.