Author Topic: SpaceX Systems Engineering  (Read 35643 times)

Offline deltaV

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Re: SpaceX Systems Engineering
« Reply #40 on: 12/29/2015 07:42 pm »
The fact that SpaceX did not try to sue the strut supplier indicates they recognize their own responsibility for not requiring 100% load testing for acceptance. We can assume the provider fulfilled  their obligation to deliver the product with specified testing.

Or they negotiated some compensation but agreed to keep fact that confidential. It's not safe to assume that we know about everything that occurs. A transfer of money is a lot easier to hide than a rocket.

But how would or could a little strut manufacturer possibly compensate for the loss of a rocket & payload worth millions of dollars?

What's your source for the strut manufacturer being "little"?

Offline Jim

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Re: SpaceX Systems Engineering
« Reply #41 on: 12/29/2015 07:54 pm »
1.  But you keep only focusing on raw material.  You seem to completely exclude the possibility that they would require component testing from a supplier - and I think it's because you don't think "material certification" can mean something different than what you have experienced.  That is a fragile line of reasoning...


2.  NASA has no visibility into the component level parts of a Falcon 9 - it is a commercial service, not a product that NASA is buying.  Do think NASA inspectors are on the Falcon 9 production line?

1.  Wrong.  Material cert is for the material not components.   Kabloona is 100% correct

2.  Yes, NASA does.  NASA doesn't look at each individual item, but it has looked at the processes that create the items.

Eample:

Bakery.  NASA does look at each cake but it looks at where the eggs, flour and sugar come from.  NASA would then look at how they are combined into cakes. 

Also, when it comes to a specific cake for NASA (aka Jason-3 booster), NASA watches how it is built. 

Offline llanitedave

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Re: SpaceX Systems Engineering
« Reply #42 on: 12/29/2015 10:37 pm »
NASA would definitely not want one of my wife's cakes, then.  S'ok.  More for me!
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Offline CyndyC

Re: SpaceX Systems Engineering
« Reply #43 on: 12/29/2015 10:58 pm »
But how would or could a little strut manufacturer possibly compensate for the loss of a rocket & payload worth millions of dollars?

What's your source for the strut manufacturer being "little"?

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Offline mfck

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Re: SpaceX Systems Engineering
« Reply #44 on: 12/29/2015 11:42 pm »
But how would or could a little strut manufacturer possibly compensate for the loss of a rocket & payload worth millions of dollars?

What's your source for the strut manufacturer being "little"?

Albert Einstein, Theory of Relativity
First Principles all the way, huh?

Offline Kabloona

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Re: SpaceX Systems Engineering
« Reply #45 on: 04/07/2016 08:26 pm »
Some new and interesting videos related to SpaceX's systems engineering approach. And Dan Rasky has a few other SpaceX- and Blue- Origin-related videos worth checking out on YouTube.







« Last Edit: 04/07/2016 08:39 pm by Kabloona »

Offline Craftyatom

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Re: SpaceX Systems Engineering
« Reply #46 on: 04/09/2016 10:26 pm »
Some new and interesting videos related to SpaceX's systems engineering approach. And Dan Rasky has a few other SpaceX- and Blue- Origin-related videos worth checking out on YouTube.

Youtube videos aren't showing for me, so here are some links for those having the same issue:
youtube.com/watch?v=xCHuT7r38Es
youtube.com/watch?v=SMLDAgDNOhk
youtube.com/watch?v=I0qgBuIO6n4
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Offline catdlr

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Re: SpaceX Systems Engineering
« Reply #47 on: 04/10/2016 05:20 am »
People need to stop posting videos with the shared youtube link (i.e.,  youtube.be), and use the link yoututbe.com/watch?v= instead.  Chris did installed a conversion marco for this, but it seems that post above got past it.
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Offline Roy_H

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Re: SpaceX Systems Engineering
« Reply #48 on: 04/12/2016 08:07 pm »
The fact that SpaceX did not try to sue the strut supplier indicates they recognize their own responsibility for not requiring 100% load testing for acceptance. We can assume the provider fulfilled  their obligation to deliver the product with specified testing.

Or they negotiated some compensation but agreed to keep fact that confidential. It's not safe to assume that we know about everything that occurs. A transfer of money is a lot easier to hide than a rocket.

But how would or could a little strut manufacturer possibly compensate for the loss of a rocket & payload worth millions of dollars?

Totally out of the question. Warranties are for the product, and never cover losses as a result of use. The company would be required to replace the defective bolts/struts, nothing more.
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Offline savuporo

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Re: SpaceX Systems Engineering
« Reply #49 on: 04/14/2016 06:20 am »
What i have learned on this forum is that, most of the avid followers of the company favor replacing CDRs with LDRs ( where C used to stand for critical, and L will be laudatory )
Orion - the first and only manned not-too-deep-space craft

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