SpaceX Falcon 9 / Dragon 2 : SpX-DM2 : May 30, 2020 : DISCUSSION

[log0008]

Great media event by the crew. Have convinced my mum whose a Grade 2/3 teacher here in Australia to show her class tomorrow, stuff like this really helps inspire the next generation of engineers, astronauts and  Nasapaceflight forum users 

[loekf]

Did Bob say they loaded up an icecream maker in one of these hard boxes under the seats ?

Very spacious that capsule I must say, they could indeed put beds under the chairs. However, I remember they can lower the chairs when entering or disembarking.

[hygoex]

Is there a requirement that they have to suit up before docking?   

[JDTractorGuy]

Has a full replay of that media event been posted anywhere?

[cebri]

Has a full replay of that media event been posted anywhere?

Go to the live webcast, you can replay any part of the mission from there. 

[yo3ict]

Is there any comm net-only stream for the Crew Dragon mission?

Getting tired of this redundant commentary that lacks the technical engagement I was used to during the space shuttle program.

[Jeff Lerner]

B&D named their capsule Endeavour but all communicators are still using “Dragon” as call sign ...

Is there a protocol for this ..

[JMS]

B&D named their capsule Endeavour but all communicators are still using “Dragon” as call sign ...

Is there a protocol for this ..

Just a guess but they've been running these procedures in SIMs for a long time. Likely just used to saying "Dragon".

[Hog]

Is there any comm net-only stream for the Crew Dragon mission?

Getting tired of this redundant commentary that lacks the technical engagement I was used to during the space shuttle program.

Agreed, I miss the shuttle mission type  coverage.

[alang]

Yeah, that worry went the way of the Millenium Bug. Good observation.

Please don't bring up the millennium bug. It was real. Back then I changed a lot of code that used short Oracle dates.
It was a well understood problem with a clear solution which is why it got fixed.
Spaceflight is much much more difficult.

[haywoodfloyd]

Yeah, that worry went the way of the Millenium Bug. Good observation.

Please don't bring up the millennium bug. It was real. Back then I changed a lot of code that used short Oracle dates.
It was a well understood problem with a clear solution which is why it got fixed.
Spaceflight is much much more difficult.

I, too, spent months "fixing" programs for the Y2K "bug". Hundreds of hours, many dozens of programs for a large government department.
I know it was real because it lived it.
I'd hate to have to do something similar for "space code".

[Mader Levap]

A lot of people took nothing happening after 2000 as evidence millennium bug was not real instead as 2k problem successfully fixed.

This kind of moronic logic is prevalent unfortunately - just look at current pandemic. Low rates of cases and deaths is taken as evidence that employed strict measures are not needed, but in reality they are low exactly thanks to them.

[Oersted]

No need to call me a moron, thanks. Not usually the way we talk to each other at NSF.

In the context of the discussion about whether touch-screens could be used in space, I used the Millenium Bug as an example of another problem that was called potentially disastrous but turned out to be fixable.

[Norm38]

Whatever NASA TV is doing right now, it looks really low budget. Fake twinkling star field (camera noise) and  it looks like Dragon is being jerked across the screen on a string.

[ZachS09]

As there is some cargo beneath the seats, is there a number in regards to the cargo mass?

[Herb Schaltegger]

Whatever NASA TV is doing right now, it looks really low budget. Fake twinkling star field (camera noise) and  it looks like Dragon is being jerked across the screen on a string.

Low-light camera noise isn’t “fake twinkling starfield” and the “jerked across the screen on a string” is what happens with a long telephoto lens on an ISS external camera is being told to slew.  A tiny motion creates a huge apparently change in the field of view in a long lens.

[DecoLV]

Re Bob's remarks on the uphill ascent. I wonder if the ride was harder than expected. He didn't get specific, but I wonder if there was anything serious, e.g. pogo. Their remarks seem ambiguous.

[mrhuggy]

The Cooperative Institute for Meteorological Satellite Studies (CIMSS) part of University of Wisconsin-Madison have done a little blog about the GEOS-16 NOAA geostationary weather satellite imaging the launch of SpX-DM2.

https://cimss.ssec.wisc.edu/satellite-blog/archives/36890

The GIF is from that blog.

[kevinof]

My take was that it wasn't a problem, just different.

I assume that a rocket like the F9, being very long will tend to twitch a lot whenever there is gimballing on the engines or some other force acting on the stack. If you are at the pointy end you would feel the effects a lot.

It looked very smooth but then the cameras wouldn't pick up any movement like this anyway.

Re Bob's remarks on the uphill ascent. I wonder if the ride was harder than expected. He didn't get specific, but I wonder if there was anything serious, e.g. pogo. Their remarks seem ambiguous.

[Gary]

I've been watching the spacex near field test. I wasn't convinced about the flat screen approach but it all seems to work well and it's a very clean layout. It kinda reminds me of an A320 compared to a DC3 :-)