SpaceX Tuesday...

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Eric Mc

122,032 posts

265 months

Sunday 11th January 2015
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The barge seems to have come through its "thrashing" fairly unscathed.

scubadude

2,618 posts

197 months

Monday 12th January 2015
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Eric Mc said:
The barge seems to have come through its "thrashing" fairly unscathed.
Yes, looks like a glancing blow.

Have to give them Kudos, managing to "hit" the barge is inside the quote accuracy of some ICBM systems!

As you said, it'll take a few goes... I think its also slightly ironic, this would be alot easier if they where allowed to land it in a desert or similar isolated location but they have to do the open water/barge approach first to prove they can do it.

Simpo Two

85,422 posts

265 months

Monday 12th January 2015
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Eric Mc said:
The barge...
'Autonomous spaceport drone ship' if you please!



So, they have to do this because some rules say they are not allowed to land on land...?

Eric Mc

122,032 posts

265 months

Monday 12th January 2015
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More or less.

They have to be able to demonstrate that they can control the rate of descent and soft land the thing in a very accurate way.

Their ultimate plan would be to have it land vertically more or less beside where it took off from - much as the Space Shuttle tried as often as it could to land back at Kennedy.

However, they have a long way to go before they can get to that point. At the moment the FAA will be having nightmare visions of a Falcon 1st stage scoring a bullseye at unabated speed right into the middle of The Magic Kingdom.

MartG

20,678 posts

204 months

Monday 12th January 2015
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Looks like some debris of the rocket being unloaded

http://spaceflightnow.com/2015/01/11/photos-spacex...

Simpo Two

85,422 posts

265 months

Monday 12th January 2015
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Eric Mc said:
More or less.

They have to be able to demonstrate that they can control the rate of descent and soft land the thing in a very accurate way.

Their ultimate plan would be to have it land vertically more or less beside where it took off from - much as the Space Shuttle tried as often as it could to land back at Kennedy.

However, they have a long way to go before they can get to that point. At the moment the FAA will be having nightmare visions of a Falcon 1st stage scoring a bullseye at unabated speed right into the middle of The Magic Kingdom.
Perhaps another design could sprout wings and wheels and land like a drone? More weight to carry up though I suppose.

moribund

4,031 posts

214 months

Monday 12th January 2015
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Love one of the comments on that pics site -

Ken Hatch · I would suggest they speak more realistically and more conversationally about tests like this. "We are going to crash a rocket into a boat, its going to be epic!" "Eventually we might even get it to land, and some day the information will allow us to land bigger rockets back where they launched from."

He then goes on to say how this would work better with the media and undermine all those stupid "failed landing" headlines. I think he might have a point at this stage in the project.

Eric Mc

122,032 posts

265 months

Tuesday 13th January 2015
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Simpo Two said:
Perhaps another design could sprout wings and wheels and land like a drone? More weight to carry up though I suppose.
Weight is always the issue with launchers. For every pound of weight you add to the stage, you might three or four times the weight in fuel to lift that extra weight - which of course needs extra fuel etc.

The Shuttle showed the problems associated with launching unnecessary items into space i.e. wings, undercarriage and wheels, tail fins and the associated hydraulic systems, power units etc.

annodomini2

6,861 posts

251 months

Tuesday 13th January 2015
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Eric Mc said:
Simpo Two said:
Perhaps another design could sprout wings and wheels and land like a drone? More weight to carry up though I suppose.
Weight is always the issue with launchers. For every pound of weight you add to the stage, you might three or four times the weight in fuel to lift that extra weight - which of course needs extra fuel etc.

The Shuttle showed the problems associated with launching unnecessary items into space i.e. wings, undercarriage and wheels, tail fins and the associated hydraulic systems, power units etc.
10-12x the fuel, payload is about 7% to LEO on the F9 V1.1.

It's not just the weight, it's the complexity, more stuff = more to go wrong. One of the big weak points of the Shuttle was it's complexity.

These all have to be designed, developed, tested, tested again, broken, redesigned, new features added, redesigned, tested, broken, redesigned again etc, etc...


Simpo Two

85,422 posts

265 months

Tuesday 13th January 2015
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So maybe simple and cheap is best and make them disposable - empty cylinder falls into sea, eventually picked up and recycled into fridges...

SpeedyDave

417 posts

226 months

Wednesday 14th January 2015
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Simpo Two said:
So maybe simple and cheap is best and make them disposable - empty cylinder falls into sea, eventually picked up and recycled into fridges...
Nah, they've already slashed the cost of launch and its still $60M. Even a very optimistic & dedicated focus on cheap reusable is going to leave you with costs of some tens of millions at best.

Fuel for a launch is only circa $0.2M, add cost of all the launch process & management and a reusable could be flying for a few million per lift.

Hell even if they crash 50% of all the landings indefinitely they'll be way ahead.

Rockets are expensive, fuel is cheap.

You also have to keep in mind that ultimate reason Musk started SpaceX was establish travel to and from Mars. Reliable rapid reusability is what they are all about.

MartG

20,678 posts

204 months

Friday 16th January 2015
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MartG

20,678 posts

204 months

Friday 16th January 2015
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"Full RUD (rapid unscheduled disassembly) event." biggrin

CrutyRammers

13,735 posts

198 months

Friday 16th January 2015
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That was close, good effort, and it's good of them to publish it.

Eric Mc

122,032 posts

265 months

Friday 16th January 2015
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Excellent images - and full marks to the company for being open about what happened (unlike Dream Chaser).

I'm becoming more and more impressed with what SpaceX are doing and how they are going about doing it.

London424

12,829 posts

175 months

Friday 16th January 2015
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2 - 3 weeks till the next launch...plus some humour from Elon Musk

https://twitter.com/elonmusk/status/55610537005405...

Eric Mc

122,032 posts

265 months

Friday 16th January 2015
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If at first you don't succeed, try, try, try again -

and again

and again

and again

MartG

20,678 posts

204 months

Friday 16th January 2015
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Video now released

https://vine.co/v/OjqeYWWpVWK

Right click on image and unmute to get the sound wink

Edited by MartG on Friday 16th January 17:50

jingars

1,094 posts

240 months

Friday 16th January 2015
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MartG said:
Thanks for the link thumbup

Caruso

7,436 posts

256 months

Friday 16th January 2015
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MartG said:
Video now released

https://vine.co/v/OjqeYWWpVWK

Right click on image and unmute to get the sound wink
If that's not "good video of the landing" then I don't know what is???

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