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SpaceX Crew Dragon: Elon Musk decries 'stranger than fiction' problem
Inverse ^
| 10/30/2020
| Mike Brown
Posted on 10/30/2020 12:45:32 PM PDT by BenLurkin
click here to read article
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1
posted on
10/30/2020 12:45:32 PM PDT
by
BenLurkin
To: SunkenCiv
2
posted on
10/30/2020 12:46:07 PM PDT
by
BenLurkin
(The above is not a statement of fact. It is either opinion or satire. Or both.)
To: BenLurkin
Inside the gas generator
Nicknamed Hillary.
3
posted on
10/30/2020 12:49:04 PM PDT
by
blueunicorn6
("A crack shot and a good dancer”)
To: BenLurkin
The tests found a masking lacquer, left over from the build process, had blocked a vent hole.Oopsie. Someone forgot to wash off the PVA before assembly.
4
posted on
10/30/2020 12:55:20 PM PDT
by
Ol' Dan Tucker
(For 'tis the sport to have the engineer hoist with his own petard., -- Hamlet, Act 3, Scene 4)
To: BenLurkin
a NASA briefing this week that a problem with a "nail polish"-like substance discovered during a previous launch threatened to derail the grand plans Recall some years ago Marine helicopters were falling out of the air because of de-laminating rotor blades
Was eventually traced to a laminating technician who would varnish her nails at beak time
The nail varnish vapor on the blades prevented proper adhesion.
5
posted on
10/30/2020 12:56:50 PM PDT
by
spokeshave
(White Confederate statue kills black man......Another month of protests.... (HT to seawolf101))
To: BenLurkin
Reminds me of a time I was the engineering lead on a project building a big radar and when they were flusing out the cooling water one day at the test site they found plastic debris in the lines. I ordered them to shut it all down and flush the lines and finally we figured out that we had a defective valve that had a plastic ball inside to control water flow but which had broken down. We knew the source of the plastic but the issue was that we had no way of knowing if we'd gotten all of the stuff out or if any of it would lodge into the cooling water piping for the high power transmitter. If it did, it could cause the transmitter to burn up, that's hundreds of thousands of dollars worth of equipment toasted.
We had to make a call and this was my first big leadership job so I went to the bigshots, VP of engineering on down they all said 'wow, that's a tough decision you have. Let us know what happens.' Thanks, guys. Lead from behind I guess. So it was all on me.
Knowing I could cook the transmitter and end my career, I said 'enough is enough, turn it on and let's radiate.' It was fine. But I aged five years in the meantime.
6
posted on
10/30/2020 1:02:14 PM PDT
by
pepsi_junkie
(Often wrong, but never in doubt!)
To: BenLurkin
Not a robust system if it can be stopped with some misapplied nail polish (lacquer).
To: BenLurkin
Sounds like a QA/QC problem.
8
posted on
10/30/2020 1:13:05 PM PDT
by
LastDayz
(A blunt and brazen Texan. I will not be assimilated.)
To: BenLurkin
Lacquer in the gas line.
I remember something like this clogging a carb on my motorcycle in 1974. As much as it seems silly, it stopped me in the middle of the woods.
To: spokeshave; blam
We had one operator who wasn’t allowed in the photolithography line. Her perfume interfered with the photoresist...
10
posted on
10/30/2020 1:25:20 PM PDT
by
null and void
(Don't piss off old people. The older we get the less 'life in prison' is a deterent!)
To: Ol' Dan Tucker
"Oopsie." "Let private industry do it cheaper" they said...
/s
11
posted on
10/30/2020 1:40:22 PM PDT
by
logi_cal869
(-cynicus the "concern troll" a/o 10/03/2018 /!i!! &@$%&*(@ -)
To: null and void
We had unusual failures in final test of printed circuit boards right after thanksgiving one year. Lots if internal shorts and bridges. We found traces of aluminum in failure samples.
Turns out that people who had aluminized christmas decorations at home were bringing the particles to work on their clothes and shoes. Even though we wore lab coats the particles were mobile enough to get into the air and mix with the conformal coat during the application process, the last step before final test.
12
posted on
10/30/2020 2:08:37 PM PDT
by
pfflier
To: null and void
We had a vapor phase degreaser that the gals in PCB assembly found worked wonderfully and much more quickly than cleaning by scrubbing.
Unfortunately, it’s real purpose was to clean stainless steel parts for penile implants, and left traces of flux on parts bound for the cleanroom.
13
posted on
10/30/2020 2:28:08 PM PDT
by
biggerten
(Love you, Mom.)
To: biggerten
Is that what you meant by engineer (hardware/firmware)?
14
posted on
10/30/2020 2:36:51 PM PDT
by
null and void
(Don't piss off old people. The older we get the less 'life in prison' is a deterent!)
To: BenLurkin
A frozen o-ring took out the Challenger.
15
posted on
10/30/2020 2:43:29 PM PDT
by
E. Pluribus Unum
(Islam is a totalitarian death cult founded by a child rapist.)
To: E. Pluribus Unum
Not one Morton-Thiokol engineer signed off on that launch. Not a single one. It was approved by (presumably non-technical) managers.
16
posted on
10/30/2020 2:49:50 PM PDT
by
null and void
(Don't piss off old people. The older we get the less 'life in prison' is a deterent!)
To: BenLurkin
With my advanced degree in thermodynamic profundity of dual matrix bovine scatology, the only think I can offer is
How about them Bears!
17
posted on
10/30/2020 3:15:30 PM PDT
by
SERE_DOC
( The beauty of the Second Amendment is that it will not be needed until they try to take it. TJ)
To: SERE_DOC
18
posted on
10/30/2020 3:19:45 PM PDT
by
BenLurkin
(The above is not a statement of fact. It is either opinion or satire. Or both.)
To: BenLurkin
Yeppers.
Ya make ‘em to ever closer and closer tolerances,
ya make lighter and stronger and lighter and stronger,
ya start makin’ ‘em too easy to be “just a little bit” wrong.
19
posted on
10/30/2020 3:20:43 PM PDT
by
Robert A Cook PE
( I can only donate monthly, but the radical ABCNNBCBS does it every hour on their news.)
To: Pearls Before Swine
Cadmium playing on tools caused titanium to get brittle during development of the SR-71.
Some things just arent known in advance.
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