Author Topic: SpaceX F9 : Starlink 7 (v1.0 L6) : April 22, 2020 : Discussion (Read 62728 times)

Elthiryel · « **Reply #80 on:** 04/22/2020 01:34 pm »

According to the simulations I've seen (and also my own simple ones), the second stage and the satellites should pass more or less over London a few minutes after the separation, coming from the west/northwest. I am also pretty sure that's well before entering the Earth shadow.

However, I have no idea how bright this is going to be, I don't recall seeing any videos of Starlink sightings just after the separation.

anof · « **Reply #81 on:** 04/22/2020 02:53 pm »

Quote from: Elthiryel on 04/22/2020 01:34 pm

According to the simulations I've seen (and also my own simple ones), the second stage and the satellites should pass more or less over London a few minutes after the separation, coming from the west/northwest. I am also pretty sure that's well before entering the Earth shadow.

However, I have no idea how bright this is going to be, I don't recall seeing any videos of Starlink sightings just after the separation.

The satellites will probably have not deployed their solar panels at that point so they might not be very bright.

Norm38 · « **Reply #82 on:** 04/22/2020 04:47 pm »

It's 11:45 CDT right now, and YouTube is saying 12:40pm CDT. For a launch that's happening at 2:30pm CDT?

That's quite early for a webcast to start.

Elthiryel · « **Reply #83 on:** 04/22/2020 05:03 pm »

It's not the first time when the webcast on YouTube is showing a strange start time. On Twitter they stated that the webcast will be available around 10 minutes before the launch and I think we can safely assume that's still the plan.

EDIT: Not Twitter, but their website, sorry. But it's still there: https://www.spacex.com/webcast

rockets4life97 · « **Reply #84 on:** 04/22/2020 05:19 pm »

I didn't see a logo on the fairing in the pictures posted in the update thread from the remote setup. Did I miss it or is this common for Starlink launches?

salpun · « **Reply #85 on:** 04/22/2020 05:21 pm »

Common to not have logo.

wannamoonbase · « **Reply #86 on:** 04/22/2020 05:30 pm »

Quote from: salpun on 04/22/2020 05:21 pm

Common to not have logo.

I assumed they didn't want to add the expense, but more importantly the charred logo may impact the ability and cost to reuse the fairings.

aero · « **Reply #87 on:** 04/22/2020 05:52 pm »

Quote from: Elthiryel on 04/22/2020 05:03 pm

It's not the first time when the webcast on YouTube is showing a strange start time. On Twitter they stated that the webcast will be available around 10 minutes before the launch and I think we can safely assume that's still the plan.

EDIT: Not Twitter, but their website, sorry. But it's still there: https://www.spacex.com/webcast

Yes, it's still there but it now says 3:30 PM EDT.

kwan3217 · « **Reply #88 on:** 04/22/2020 07:23 pm »

They just mentioned excess alcohol in the engine as the cause of the failure last flight. Had that been announced before, or is that new information (to us) today>

aameise9 · « **Reply #89 on:** 04/22/2020 07:24 pm »

Did the presenter just explain that the engine issue on the last flight was due to isopropyl alcohol (cleaning fluid)?

We did not know this before!

Or did I misunderstand?

rabe0070 · « **Reply #90 on:** 04/22/2020 07:29 pm »

Yes. Elon Musk tweeted it out this morning, but there are really no other details.

lrk · « **Reply #91 on:** 04/22/2020 07:30 pm »

Quote from: kwan3217 on 04/22/2020 07:23 pm

They just mentioned excess alcohol in the engine as the cause of the failure last flight. Had that been announced before, or is that new information (to us) today>

Elon posted it on twitter this morning, that is the earliest we have heard about this.

kwan3217 · « **Reply #92 on:** 04/22/2020 07:35 pm »

They said that they wouldn't try to catch the fairings, but rather fish them out of the water. I didn't catch why, did anyone else?

rabe0070 · « **Reply #93 on:** 04/22/2020 07:36 pm »

Updating software.

punder · « **Reply #94 on:** 04/22/2020 07:41 pm »

Landing, hurrah!

StuffOfInterest · « **Reply #95 on:** 04/22/2020 07:43 pm »

It would be nice to have a longer camera view from inside of the LOX tank after SECO. Looks like a really interesting pattern of movement when the acceleration stops.