Quote from: Garrett on 05/04/2013 01:03 pmQuote from: QuantumG on 05/04/2013 12:26 amAs I said, there's no explicit statement that the CASSIOPE flight will be the flight they attempt an ocean landing with. I expect it will be, but I'd prefer an explicit statement if possible.I'm pretty sure it was explicitly stated.Any idea where?
Quote from: QuantumG on 05/04/2013 12:26 amAs I said, there's no explicit statement that the CASSIOPE flight will be the flight they attempt an ocean landing with. I expect it will be, but I'd prefer an explicit statement if possible.I'm pretty sure it was explicitly stated.
As I said, there's no explicit statement that the CASSIOPE flight will be the flight they attempt an ocean landing with. I expect it will be, but I'd prefer an explicit statement if possible.
Quote from: Garrett on 05/04/2013 01:03 pmQuote from: QuantumG on 05/04/2013 12:26 amAs I said, there's no explicit statement that the CASSIOPE flight will be the flight they attempt an ocean landing with. I expect it will be, but I'd prefer an explicit statement if possible.I'm pretty sure it was explicitly stated.Nope. I read the transcript.
Quote from: Danderman on 05/04/2013 02:35 pmQuote from: Garrett on 05/04/2013 01:03 pmQuote from: QuantumG on 05/04/2013 12:26 amAs I said, there's no explicit statement that the CASSIOPE flight will be the flight they attempt an ocean landing with. I expect it will be, but I'd prefer an explicit statement if possible.I'm pretty sure it was explicitly stated.Nope. I read the transcript.I'm in the "wasn't stated but depending on your read, more or less heavily implied" camp. And we bois have happily jumped to the most optimistic conclusion.Likely? I'd like to think so. Certain? no.
Quote from: Lar on 05/04/2013 05:51 pmLikely? I'd like to think so. Certain? no.It would be unusual if Elon were to decide to burden the team developing the 1.1 variant with additional testing requirements for its first launch. If there were a failure during ascent, the team could never be 100% sure that the root cause were not the modifications required for landing.
Likely? I'd like to think so. Certain? no.
I'm going to argue that they should put a full set of legs on 1.1 as soon as possible, certainly before they try a fake landing on water. They will affect the terminal velocity, center of gravity, aerodynamics, moments of inertia, heating, and other effects. This is stuff you need to know, almost to the point of a test without legs being worth little except perhaps testing re-light.Also, remember the Mars probe that died on impact, due to an unanticipated problem with legs extending (it hit the contact switch, the craft thought it had weight on the legs, and shut off the engines a few hundred meters up).So test as you fly, and fly as you test. Put full scale legs on from the beginning - don't wait for GH2 results.
It would be unusual if Elon were to decide to burden the team developing the 1.1 variant with additional testing requirements for its first launch. If there were a failure during ascent, the team could never be 100% sure that the root cause were not the modifications required for landing.
"This is also the version of Falcon 9 where we will attempt to recover the first stage..." "Although, as I've said before, I think it's going to take us several flights before we are successful in that. I'm not sure it'll be this flight where we are successful, but that is our aspiration and that is one of the key design goals of the new version of Falcon 9"
...Will their Dragon recovery ship hold a first stage? It is conveniently located on the West Coast.
Quote from: Danderman on 05/04/2013 05:59 pmIt would be unusual if Elon were to decide to burden the team developing the 1.1 variant with additional testing requirements for its first launch. If there were a failure during ascent, the team could never be 100% sure that the root cause were not the modifications required for landing.C'mon. Of course he would. That's what makes SpaceX so different from other manufacturers and also why so many criticize (probably justifiably) how it's run...
I'm wondering : if they successfully make several water landing why would they need to develop Grasshopper 2? Just to test the deployment of the legs?
Jim, if you could get us something (other than your say so) to verify that SpaceX are going to attempt recovery of the first stage on this flight, that'd be great. So far there's no explicit public statements to that effect from SpaceX, but it's certainly the impression I got.
What makes you think they would make a public statement?Quote from: QuantumG on 05/03/2013 11:38 pmJim, if you could get us something (other than your say so) to verify that SpaceX are going to attempt recovery of the first stage on this flight, that'd be great. So far there's no explicit public statements to that effect from SpaceX, but it's certainly the impression I got.
No one really expects that SpaceX has made a public statement about testing recovery during the first mission of V1.1. There is a rumor, but that is about all we have.
It is entirely possible that SpaceX would attempt to, for example, relight one of the 9 first stage Merlin engines after separation of the second stage, and that would be the test, conducted after the customer is safely away. We would then hear about it after the fact.
They seem to be falling farther behind schedule.
Quote from: mr. mark on 05/09/2013 03:27 pmThey seem to be falling farther behind schedule.Nobody's ever done that before. My opinion: space is hard.