Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
1st 12:25 pm EDT.

/dps

--
Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
went apopleptic when he learned a lousy rodent had peed away all his
precious heavy water.
_The Disappearing Spoon_, Sam Kean

On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
> 1st 12:25 pm EDT.
>
> /dps
>
> --
> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
> went apopleptic when he learned a lousy rodent had peed away all his
> precious heavy water.
> _The Disappearing Spoon_, Sam Kean

AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission since it's not modified to perform an EVA. Only the Crew Dragon capsule being used for the Polaris Dawn mission is fitted (or being fitted) for EVA.

The Running Man scribbled something on Thursday the 5/30/2024:
> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>> 1st 12:25 pm EDT.
>>
>> /dps
>>
>> --
>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>> went apopleptic when he learned a lousy rodent had peed away all his
>> precious heavy water.
>> _The Disappearing Spoon_, Sam Kean
>
> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission
> since it's not modified to perform an EVA. Only the Crew Dragon capsule being
> used for the Polaris Dawn mission is fitted (or being fitted) for EVA.

Why are you talking about rescue missions? Starliner's heat shield is
intact.

/dps

--
potstickers, Japanese gyoza, Chinese dumplings, let's do it

On 30/05/2024 18:35 Snidely <snidely.too@gmail.com> wrote:
> The Running Man scribbled something on Thursday the 5/30/2024:
>> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>> 1st 12:25 pm EDT.
>>>
>>> /dps
>>>
>>> --
>>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>>> went apopleptic when he learned a lousy rodent had peed away all his
>>> precious heavy water.
>>> _The Disappearing Spoon_, Sam Kean
>>
>> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission
>> since it's not modified to perform an EVA. Only the Crew Dragon capsule being
>> used for the Polaris Dawn mission is fitted (or being fitted) for EVA.
>
> Why are you talking about rescue missions? Starliner's heat shield is
> intact.
>
> /dps
>
> --
> potstickers, Japanese gyoza, Chinese dumplings, let's do it

Because they said there's about a 0.75% chance that the helium leak could result in a failure to initiate the retro-burn.

The Running Man blurted out:
> On 30/05/2024 18:35 Snidely <snidely.too@gmail.com> wrote:
>> The Running Man scribbled something on Thursday the 5/30/2024:
>>> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>>> 1st 12:25 pm EDT.
>>>>
>>>> /dps
>>>>
>>>> --
>>>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>>>> went apopleptic when he learned a lousy rodent had peed away all his
>>>> precious heavy water.
>>>> _The Disappearing Spoon_, Sam Kean
>>>
>>> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission
>>> since it's not modified to perform an EVA. Only the Crew Dragon capsule
>>> being used for the Polaris Dawn mission is fitted (or being fitted) for
>>> EVA.
>>
>> Why are you talking about rescue missions? Starliner's heat shield is
>> intact.
>>
>> /dps
>>
>> --
>> potstickers, Japanese gyoza, Chinese dumplings, let's do it
>
> Because they said there's about a 0.75% chance that the helium leak could
> result in a failure to initiate the retro-burn.

Yes, and a Falcon 9 second stage may fall on your house. Multiple
failures have to happen for the retro burn to be missed. If any one of
those failures show up on the way to ISS, ISS becomes a safe haven.
And on departure, expect serious checkout of systems before the capusle
leaves the vicinity of the station.

/dps

--
You could try being nicer and politer
> instead, and see how that works out.
-- Katy Jennison

Thursday, Snidely quipped:

> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June 1st
> 12:25 pm EDT.

Working around GSE issues with LOX topping. L-01:29:01, and still
within the built-in hold.

-d

--
Let's celebrate Macaronesia

On 2024-06-01 10:57 a.m., Snidely wrote:
> Thursday, Snidely quipped:
>
>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>> 1st 12:25 pm EDT.
>
> Working around GSE issues with LOX topping.  L-01:29:01, and still
> within the built-in hold.

Scrubbed. Darn.

Alain Fournier

On 01/06/2024 13:26 Alain Fournier <alain245@videotron.ca> wrote:
> On 2024-06-01 10:57 a.m., Snidely wrote:
>> Thursday, Snidely quipped:
>>
>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>> 1st 12:25 pm EDT.
>>
>> Working around GSE issues with LOX topping.? L-01:29:01, and still
>> within the built-in hold.
>
>
> Scrubbed. Darn.
>
>
> Alain Fournier
>

One of the three redundant computers failed to start up properly (took too long to start up). They want to investigate before giving the go.

After serious thinking Alain Fournier wrote :
> On 2024-06-01 10:57 a.m., Snidely wrote:
>> Thursday, Snidely quipped:
>>
>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June 1st
>>> 12:25 pm EDT.
>>
>> Working around GSE issues with LOX topping.  L-01:29:01, and still within
>> the built-in hold.
>
>
> Scrubbed. Darn.
>
>
> Alain Fournier

Ground-based sequencer computer didn't sequence?

/dps

--
Rule #0: Don't be on fire.
In case of fire, exit the building before tweeting about it.
(Sighting reported by Adam F)

On Friday or thereabouts, The Running Man declared ...
> On 30/05/2024 18:35 Snidely <snidely.too@gmail.com> wrote:
>> The Running Man scribbled something on Thursday the 5/30/2024:
>>> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>>> 1st 12:25 pm EDT.
>>>>
>>>> /dps
>>>>
>>>> --
>>>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>>>> went apopleptic when he learned a lousy rodent had peed away all his
>>>> precious heavy water.
>>>> _The Disappearing Spoon_, Sam Kean
>>>
>>> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission
>>> since it's not modified to perform an EVA. Only the Crew Dragon capsule
>>> being used for the Polaris Dawn mission is fitted (or being fitted) for
>>> EVA.
>>
>> Why are you talking about rescue missions? Starliner's heat shield is
>> intact.
>>
>> /dps
>>
>> --
>> potstickers, Japanese gyoza, Chinese dumplings, let's do it
>
> Because they said there's about a 0.75% chance that the helium leak could
> result in a failure to initiate the retro-burn.

Was that 0.75% before or after the new backup backup procedure was
implemented (using 4 RCS thrusters twice)?

/dps

--
Who, me? And what lacuna?

On 02/06/2024 14:20 Snidely <snidely.too@gmail.com> wrote:
> After serious thinking Alain Fournier wrote :
>> On 2024-06-01 10:57 a.m., Snidely wrote:
>>> Thursday, Snidely quipped:
>>>
>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June 1st
>>>> 12:25 pm EDT.
>>>
>>> Working around GSE issues with LOX topping. L-01:29:01, and still within
>>> the built-in hold.
>>
>>
>> Scrubbed. Darn.
>>
>>
>> Alain Fournier
>
> Ground-based sequencer computer didn't sequence?
>
> /dps
>
>
> --
> Rule #0: Don't be on fire.
> In case of fire, exit the building before tweeting about it.
> (Sighting reported by Adam F)

<https://www.theregister.com/2024/06/03/boeing_starliner_launch_scrubbed/>

Turned out to be a redundant power supply of the ground sequencer computer that needs to be replaced. Not anything major. They should be back on the pad within a few days.

On 02/06/2024 14:22 Snidely <snidely.too@gmail.com> wrote:
> On Friday or thereabouts, The Running Man declared ...
>> On 30/05/2024 18:35 Snidely <snidely.too@gmail.com> wrote:
>>> The Running Man scribbled something on Thursday the 5/30/2024:
>>>> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>>>> 1st 12:25 pm EDT.
>>>>>
>>>>> /dps
>>>>>
>>>>> --
>>>>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>>>>> went apopleptic when he learned a lousy rodent had peed away all his
>>>>> precious heavy water.
>>>>> _The Disappearing Spoon_, Sam Kean
>>>>
>>>> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue mission
>>>> since it's not modified to perform an EVA. Only the Crew Dragon capsule
>>>> being used for the Polaris Dawn mission is fitted (or being fitted) for
>>>> EVA.
>>>
>>> Why are you talking about rescue missions? Starliner's heat shield is
>>> intact.
>>>
>>> /dps
>>>
>>> --
>>> potstickers, Japanese gyoza, Chinese dumplings, let's do it
>>
>> Because they said there's about a 0.75% chance that the helium leak could
>> result in a failure to initiate the retro-burn.
>
> Was that 0.75% before or after the new backup backup procedure was
> implemented (using 4 RCS thrusters twice)?
>
> /dps
>
> --
> Who, me? And what lacuna?

Here's your answer:

"As it turned out, there was something to be concerned about. The review turned up what he called a ?design vulnerability? with Starliner?s propulsion system that had not been recognized. Starliner?s service module has four areas called ?doghouses? spaced 90 degrees apart that host both larger Orbital Maneuvering and Attitude Control (OMAC) thrusters and smaller reaction control system (RCS) thrusters. If two adjacent doghouses failed for some reason, though, it would prevent the spacecraft from doing a deorbit burn even though the spacecraft is designed with multiple ways to carry out the deorbit burn using combinations of OMAC and RCS thrusters."

<https://www.thespacereview.com/article/4805/1>

The Running Man explained on 6/4/2024 :
> On 02/06/2024 14:22 Snidely <snidely.too@gmail.com> wrote:
>> On Friday or thereabouts, The Running Man declared ...
>>> On 30/05/2024 18:35 Snidely <snidely.too@gmail.com> wrote:
>>>> The Running Man scribbled something on Thursday the 5/30/2024:
>>>>> On 30/05/2024 11:17 Snidely <snidely.too@gmail.com> wrote:
>>>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>>>>> 1st 12:25 pm EDT.
>>>>>>
>>>>>> /dps
>>>>>>
>>>>>> --
>>>>>> Killing a mouse was hardly a Nobel Prize-worthy exercise, and Lawrence
>>>>>> went apopleptic when he learned a lousy rodent had peed away all his
>>>>>> precious heavy water.
>>>>>> _The Disappearing Spoon_, Sam Kean
>>>>>
>>>>> AFAIK the Crew Dragon docked at the ISS isn't suitable for a rescue
>>>>> mission since it's not modified to perform an EVA. Only the Crew Dragon
>>>>> capsule being used for the Polaris Dawn mission is fitted (or being
>>>>> fitted) for EVA.
>>>>
>>>> Why are you talking about rescue missions? Starliner's heat shield is
>>>> intact.
>>>>
>>>> /dps
>>>>
>>>> --
>>>> potstickers, Japanese gyoza, Chinese dumplings, let's do it
>>>
>>> Because they said there's about a 0.75% chance that the helium leak could
>>> result in a failure to initiate the retro-burn.
>>
>> Was that 0.75% before or after the new backup backup procedure was
>> implemented (using 4 RCS thrusters twice)?
>>
>> /dps
>>
>> --
>> Who, me? And what lacuna?
>
> Here's your answer:
>
> "As it turned out, there was something to be concerned about. The review
> turned up what he called a ?design vulnerability? with Starliner?s propulsion
> system that had not been recognized. Starliner?s service module has four
> areas called ?doghouses? spaced 90 degrees apart that host both larger
> Orbital Maneuvering and Attitude Control (OMAC) thrusters and smaller
> reaction control system (RCS) thrusters. If two adjacent doghouses failed for
> some reason, though, it would prevent the spacecraft from doing a deorbit
> burn even though the spacecraft is designed with multiple ways to carry out
> the deorbit burn using combinations of OMAC and RCS thrusters."
>
> <https://www.thespacereview.com/article/4805/1>

I believe, from my sources, including NSF and Ars Technica, that that
finding was from before the additional mode was added. The review that
revealed the above issue was what prompted the software update.

/dps

--
"That's a good sort of hectic, innit?"

" Very much so, and I'd recommend the haggis wontons."
-njm

Remember when Snidely bragged outrageously? That was Saturday:
> Thursday, Snidely quipped:
>
>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June 1st
>> 12:25 pm EDT.
>
> Working around GSE issues with LOX topping. L-01:29:01, and still within the
> built-in hold.
>
> -d

Seems to be a clean count on the third try as of L-4:02.

-d

--
Let's celebrate Macaronesia

Snidely submitted this idea :
> Remember when Snidely bragged outrageously? That was Saturday:
>> Thursday, Snidely quipped:
>>
>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June 1st
>>> 12:25 pm EDT.
>>
>> Working around GSE issues with LOX topping. L-01:29:01, and still within
>> the built-in hold.
>>
>> -d
>
> Seems to be a clean count on the third try as of L-4:02.

Still clean at Starliner separation at L+14:52

-d

--
"This is all very fine, but let us not be carried away be excitement,
but ask calmly, how does this person feel about in in his cooler
moments next day, with six or seven thousand feet of snow and stuff on
top of him?"
_Roughing It_, Mark Twain.

on 6/5/2024, Snidely supposed :
> Snidely submitted this idea :
>> Remember when Snidely bragged outrageously? That was Saturday:
>>> Thursday, Snidely quipped:
>>>
>>>> Starliner is again at SLC-41 ahead of crewed launch, L0 currently June
>>>> 1st 12:25 pm EDT.
>>>
>>> Working around GSE issues with LOX topping. L-01:29:01, and still within
>>> the built-in hold.
>>>
>>> -d
>>
>> Seems to be a clean count on the third try as of L-4:02.
>
> Still clean at Starliner separation at L+14:52

Good OI burn at L+31:00. Orbit now 323x186 km.

Congrats to the team! Go, Starliner!

/dps

--
We’ve learned way more than we wanted to know about the early history
of American professional basketball, like that you could have once
watched a game between teams named the Indianapolis Kautskys and the
Akron Firestone Non-Skids. -- fivethirtyeight.com