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#1160
by
Rocket Science
on 20 Feb, 2020 07:45
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Curious how other spacecraft launched from the US such as Cygnus and Dragon (both cargo and unmanned crew test) vehicles make through the described RFI storm, can both berth and dock successfully at ISS...
Come on Boeing, you're better than this...
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#1161
by
SimonFD
on 20 Feb, 2020 10:13
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Curious how other spacecraft launched from the US such as Cygnus and Dragon (both cargo and unmanned crew test) vehicles make through the described RFI storm, can both berth and dock successfully at ISS... Come on Boeing, you're better than this...
Well they didn't suffer anomalies on the way up and so didn't have to try and make use of the TDRS comms perhaps?
That's a genuine question, not a snark
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#1162
by
Rocket Science
on 20 Feb, 2020 16:52
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Curious how other spacecraft launched from the US such as Cygnus and Dragon (both cargo and unmanned crew test) vehicles make through the described RFI storm, can both berth and dock successfully at ISS... Come on Boeing, you're better than this...
Well they didn't suffer anomalies on the way up and so didn't have to try and make use of the TDRS comms perhaps?
That's a genuine question, not a snark
Good engineering is doing the "what-if" on the ground and not while in flight...
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#1163
by
Coastal Ron
on 20 Feb, 2020 20:15
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Curious how other spacecraft launched from the US such as Cygnus and Dragon (both cargo and unmanned crew test) vehicles make through the described RFI storm, can both berth and dock successfully at ISS... Come on Boeing, you're better than this...
Well they didn't suffer anomalies on the way up and so didn't have to try and make use of the TDRS comms perhaps?
That's a genuine question, not a snark
The TDRS satellites have been in use since 1983 - 37 years. If there was an interference issue you'd think they would have found it by now.
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#1164
by
butters
on 20 Feb, 2020 20:29
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There are no AP-101s on Starliner.
Do you know what they are using?
I don't know, but the avionics architecture Boeing developed for GPS satellites is also used for ULA's common avionics suite and SLS, so I wouldn't be surprised if that's also the basis for Starliner.
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#1165
by
clongton
on 20 Feb, 2020 21:52
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Come on Boeing, you're better than this...
I'm beginning to wonder.
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#1166
by
AJW
on 21 Feb, 2020 00:53
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Come on Boeing, you're better than this...
I'm beginning to wonder.
There were a number of comments by an 11-year Boeing veteran in the last few pages of the Pad Abort Test thread that may provide some insight into Boeing's approach when dealing with serious organizational and procedural failures.
Knowing how Boeing deals with things like this. At some point there will be some section party or crew party and most likely Chris will come down and present who ever did this "the golden (insert part award)" every body will have a good laugh, some booze, and well that guy/gal will remember this as long as they wear the blue and work on the vehicle..
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#1167
by
SoftwareDude
on 21 Feb, 2020 03:23
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#1168
by
Eric Hedman
on 21 Feb, 2020 04:57
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There are no AP-101s on Starliner.
Do you know what they are using?
I don't know, but the avionics architecture Boeing developed for GPS satellites is also used for ULA's common avionics suite and SLS, so I wouldn't be surprised if that's also the basis for Starliner.
It's looking like General Dynamics provides the Flight Computers and the System Management Computers
https://gdmissionsystems.com/articles/2019/12/18/featured-story-general-dynamics-supports-starliner-cst-100-space-capsule
The pictures of the computer and transponder look like they have old RS-25 connectors on them. Do they still use this 300 year old technology? I remember soldering cables to these connectors in a GM stamping plant nearly 40 years ago.
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#1169
by
SoftwareDude
on 21 Feb, 2020 06:43
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#1170
by
jimvela
on 21 Feb, 2020 07:11
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The pictures of the computer and transponder look like they have old RS-25 connectors on them. Do they still use this 300 year old technology? I remember soldering cables to these connectors in a GM stamping plant nearly 40 years ago.
DSUB connectors are still widely used on flight avionics to this day. Cable harnesses all used crimped pins, but box side many are soldered. The family goes up to 104 contact connectors.
It's a very up-spec variant and only shares a footprint with those ancient connectors you remember.
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#1171
by
Gary
on 21 Feb, 2020 11:38
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Having the MET set to eleven hours just before launch was probably normal and expected, because it was just a garbage value at that point. It wouldn't be set to the correct value until separation, and nothing would use it before separation either.
Presumably the spacecraft is active during that climb to orbit so would be logging certain status information? Accurate time would help even there.
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#1172
by
Svetoslav
on 21 Feb, 2020 13:31
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Is this old news?
twitter.com/katlinegrey/status/1230854955369717761
A private company in Voronezh, Russia, produces some units for #Starliner spacecraft, said Dmitry Rogozin today. According to him, those units are ordered by Boeing and intended for use in the landing system of Starliner. tass.ru/kosmos/7813231
https://twitter.com/sciguyspace/status/1230856885542281216
"I myself was surprised when I found out,” the head of Roscosmos noted.
Is it true, I would ask?
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#1173
by
abaddon
on 21 Feb, 2020 13:56
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Probably? It's hardly shocking to think that Boeing might buy parts from a supplier from the only other (available) country that has a human capsule that lands on land.
More importantly - who cares?
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#1174
by
SWGlassPit
on 21 Feb, 2020 14:25
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Is this old news?
Hard to say. The article says next to nothing. I'm surprised it's enough to get picked up on as "news" for anybody.
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#1175
by
Coastal Ron
on 21 Feb, 2020 15:08
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Is this old news?
Hard to say. The article says next to nothing. I'm surprised it's enough to get picked up on as "news" for anybody.
Well, the PR tagline for the Commercial Crew program is "American spacecraft launching from America", and now we find out that the Starliner has Russian parts in it, so not 100% American.
Personally I don't see an issue with it, but it can be one of those oddities that doesn't look good if you aren't familiar with how far flung supply chains can be.
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#1176
by
Kansan52
on 21 Feb, 2020 15:09
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More importantly - who cares?
Me. Embargoes could affect supplies.
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#1177
by
abaddon
on 21 Feb, 2020 15:24
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More importantly - who cares?
Me. Embargoes could affect supplies.
There's no indication these are a) expendable (Starliner is a reusable capsule) or b) exclusively available from the Russian supplier. And embargo concerns are overblown anyway, we continue to use the RD-180 to launch the capsule into space, and that's a much more important component that would be harder to replace. (Yes, Starliner will be on Vulcan at some point, but who knows how long that will take?).
It's barely worth mentioning, let alone caring about. Just my two cents.
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#1178
by
Rocket Science
on 21 Feb, 2020 15:24
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Well, for now it still get off the pad using Russian engines... (what he said above, just noticed)...
Still, if true the whole program point was sold as an "all American" launch capability... In light of the spacecraft's problems and now under scrutiny it provides another talking point for your competitor SpaceX...
Edit:
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#1179
by
ugordan
on 21 Feb, 2020 15:49
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If true, this will just give a reason to Rogozin to now boast (for internal purposes, of course) that Starliner both lifted off AND landed using Russian technology.
Of no other practical consequence otherwise.
Come on Boeing, you're better than this...
