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SpaceX's Grasshopper  
User currently offlineZANL188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Posted (1 year 7 months 1 week 2 days 11 hours ago) and read 20652 times:
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Another space commercialization idea that may or may not work out is SpaceX's Grasshopper. The idea is to fly a Falcon 9 first stage back to its launch site & reuse it, thereby lowering the cost of getting to orbit.

Recently SpaceX had another successful test of the Grasshopper, flying the 12 story tall vehicle to a height of approximately 12 stories and then landing. Amazing thing to me here, vs other similiar vehicles, is the sheer size of the thing... It's BIG, note the vehicles around the launch pad...

http://youtu.be/B4PEXLODw9c


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71 replies: All unread, showing first 25:
 
User currently offlineZANL188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 1, posted (1 year 7 months 1 week 2 days 11 hours ago) and read 20652 times:
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Animation of what a fully reusable Falcon 9 launch (less the trunk it seems) might look like...

http://youtu.be/OX2-qEC7P_I



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 2, posted (1 year 7 months 1 week 1 day 19 hours ago) and read 20474 times:

I'd been wondering how they'd get the 2nd stage on the ground since an M1D would be way too powerful. It looks like 4 small thrusters. Super Dracos don't seem likely since you'd have to add hypergolic tanks.


Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 3, posted (1 year 7 months 1 week 1 day 16 hours ago) and read 20426 times:
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2nd stage is the difficult bit. Personally I think they'll be doing well to get the 1st stage back.


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User currently offlineGST From United Kingdom, joined Jun 2008, 930 posts, RR: 0
Reply 4, posted (1 year 7 months 1 week 1 day 15 hours ago) and read 20402 times:



Quoting zanl188 (Reply 3):
2nd stage is the difficult bit.

Whilst that is probably true on the propulsion end, I'm not sure it is on the navigational side. The second stage is inserted into orbit and can be directed to de-orbit at any time with little fuel requirement and with the considerable aerobreaking meaning relatively little fuel will be needed to steer and retard the module for the final pad landing. The first stage does not get into an orbit, therefore to get it back to the initial launch pad requires you to burn not only to decelerate but indeed to reverse direction onto a ballistic trajectory back to the pad. This needs far more fuel, even for a relatively light stage. Much better IMO to land somewhere like the Azores (or possibly even further afield) and ship the rocket back home from there, which would still offer a saving over building a new one.

Of course the remote landing pad would somewhat complicate the weather requirements for go/no go decisions if the economics of the launch operation actually require the launcher to be reusable in every instance.

[Edited 2012-12-26 09:04:27]

User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 5, posted (1 year 7 months 1 week 1 day 15 hours ago) and read 20390 times:
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Quoting GST (Reply 4):
Much better IMO to land somewhere like the Azores (or possibly even further afield) and ship the rocket back home from there, which would still offer a saving over building a new one.

Quite a bit of fuel would be needed to get as far down range as the Azores. Seems to me the thing to do would be to land on a large barge, maybe an old oil tanker, or a spit of land somewhere.

The other problem with going back to the launch site is range safety. Titusville is just on the other side of the river from the launch site... would be bad to drop a first stage on the neighbors.



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User currently offlineGST From United Kingdom, joined Jun 2008, 930 posts, RR: 0
Reply 6, posted (1 year 7 months 1 week 1 day 13 hours ago) and read 20368 times:

Quoting zanl188 (Reply 5):
Quite a bit of fuel would be needed to get as far down range as the Azores. Seems to me the thing to do would be to land on a large barge, maybe an old oil tanker, or a spit of land somewhere.

More fuel than reversing direction? I'm not so sure. But I agree a floating pad would seem to be the most practical first stage recovery site as you can put it wherever is most convenient. Of course if it is convenient for first stage recovery it would almost certainly be in a location that you can easily bring the second stage down onto after payload insertion too which simplifies things massively.

Quoting zanl188 (Reply 5):

The other problem with going back to the launch site is range safety. Titusville is just on the other side of the river from the launch site... would be bad to drop a first stage on the neighbors.

True, but is it any worse than a first stage going boom shortly after liftoff and raining rocket fuel on the vicinity? I'd love to see the relative risk assessments of those!


User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 7, posted (1 year 7 months 1 week 1 day 13 hours ago) and read 20362 times:
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Quoting GST (Reply 6):
True, but is it any worse than a first stage going boom shortly after liftoff and raining rocket fuel on the vicinity? I'd love to see the relative risk assessments of those!

Generally on liftoff the boosters are heading away from populated areas... In this case the booster is headed towards a populated area, big difference.



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User currently offlineGST From United Kingdom, joined Jun 2008, 930 posts, RR: 0
Reply 8, posted (1 year 7 months 1 week 1 day 11 hours ago) and read 20319 times:

Yes they do if working correctly, but the [remote] potential for harm remains which is what I was referring to.

User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 9, posted (1 year 7 months 1 week 1 day 8 hours ago) and read 20260 times:

Spacex seems to be getting pretty serious about the Texas site. That would change the 1st stage recovery equation some. Texas to Florida is a whole lot more practical than Florida to the Azores. That would only be about 20% further than the 1st stage impacts now. Just a little lower trajectory could put the 1st stage right where they want it.

[Edited 2012-12-26 16:07:54]


Andy Goetsch
User currently offlineZANL188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 10, posted (1 year 6 months 3 weeks 18 hours ago) and read 19554 times:
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Some onboard video from last months test...

http://youtu.be/nUV6oqCFrFU



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 11, posted (1 year 4 months 3 weeks 7 hours ago) and read 17750 times:
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Latest test. Twice as high as the previous... Note the cowboy figure for scale...

http://youtu.be/orUjSkc2pG0



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 12, posted (1 year 3 weeks 1 day 9 hours ago) and read 15674 times:
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Another Grasshopper test from earlier this month...

http://youtu.be/eGimzB5QM1M



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User currently offlinemaxter From Australia, joined May 2009, 222 posts, RR: 0
Reply 13, posted (1 year 1 week 18 hours ago) and read 14889 times:

Nice, thanks for the links. I have no doubt that SpaceX can achieve what many others deem too difficult


maxter
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 14, posted (11 months 3 weeks 1 day 8 hours ago) and read 13977 times:
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Flew a relatively aggressive lateral manuever yesterday.

http://youtu.be/2t15vP1PyoA



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 15, posted (10 months 3 weeks 3 days 8 hours ago) and read 12744 times:
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I wonder if SpaceX had to pay for lost dairy production?

http://youtu.be/HXdjxPY2j_0



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User currently offlinekanban From United States of America, joined Jan 2008, 3405 posts, RR: 26
Reply 16, posted (10 months 3 weeks 3 days 6 hours ago) and read 12712 times:
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Quoting zanl188 (Reply 15):
I wonder if SpaceX had to pay for lost dairy production?

Can't tell if they are dairy cattle.. if they are just skip one step in making yogurt.. they were however probably destined for beef and may be a little tough.


User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 17, posted (10 months 2 weeks 6 days 19 hours ago) and read 12298 times:
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SpaceX will attempt to soft land the 1st stage of upcoming Falcon 9 launch from Vandenberg.

http://www.usatoday.com/story/news/n...cket-set-for-risky-launch/2814865/

This Falcon 9 is the new version with 8 engines arranged in a circle and the 9th engine in the center.

http://www.spacex.com/falcon9

Although no landing gear will be installed on the 1st stage for this flight, they're trying for a soft ocean landing, this does represent the first use of Grasshopper technology.



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 18, posted (10 months 2 weeks 6 days 19 hours ago) and read 12290 times:

Quoting zanl188 (Reply 17):
This Falcon 9 is the new version with 8 engines arranged in a circle and the 9th engine in the center.

Putting the eight outer engines evenly under the tank walls like that allowed them to simplify and lighten the thrust structure. The new engines are half again as powerful as the old M1Cs and required some major changes in the rocket.
The next Grasshopper should be a lot more production grade. You'll know it's getting serious when they start making flights every week.



Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 19, posted (10 months 1 week 1 day 8 hours ago) and read 11829 times:
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First Falcon 9 with the Grasshopper tech and uprated engines launches from Vandenberg on Sunday. I expect SpaceX will attempt to limit expectations, may not see any coverage. http://www.spaceflightnow.com/falcon9/006/status.html


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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 20, posted (10 months 6 days 17 hours ago) and read 11625 times:
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Some words from Elon Musk regarding todays Falcon 9 launch:

"I give pretty low odds of this recovery working on this flight," Musk said. "The point of this mission is demonstrating the ascent of the crewed version of the Falcon 9."



Gotta love Musks brevity... Talking about stage recovery in one sentence... and a crewed version of Falcon 9 in the next... Lol!

Launch window opens at 0900 PDT, 1200 EDT, or 1600 GMT. About an hour and 20 minutes from now

http://www.spaceflightnow.com/falcon9/006/130928preview/

Where is MdmeConcorde?

Good luck SpaceX!



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 21, posted (10 months 6 days 16 hours ago) and read 11599 times:
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Launch appears to have gone well.

No word on the 1st stage soft landing other than a relight of the engines was achieved...



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 22, posted (10 months 6 days 9 hours ago) and read 11514 times:
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1st stage soft landing failed. Engines relit as planned however stage developed a roll due to aerodynamic forces. Roll forced propellants away from inlets and engine flamed out.

Next attempt at 1st stage soft landing: CRS-3

Launch video:

http://youtu.be/N0mLlO9enfY



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User currently offlinetravelavnut From Netherlands, joined May 2010, 1595 posts, RR: 7
Reply 23, posted (10 months 6 days ago) and read 11441 times:

Elon also tweeted:

Elon Musk ‏@elonmusk 12u Between this flight & Grasshopper tests, I think we now have all the pieces of the puzzle to bring the rocket back home.

And that is pretty damn awesome me thinks!  



Live From Amsterdam!
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 24, posted (10 months 15 hours ago) and read 11131 times:
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"SpaceX CEO and Chief Designer Elon Musk has laid out his plans for recovery and reusability of the first stage of the Falcon 9. The debut mission to launch the Cassiope satellite into orbit included a number of events that should help SpaceX recover and possibly even reuse the first stage of the Falcon 9 in 2014."



http://www.nasaspaceflight.com/2013/...plans-reusability-falcon-9-rocket/



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 25, posted (9 months 3 weeks 2 days 13 hours ago) and read 10941 times:
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Interesting view of Mondays Grasshopper test flight to 744 meters. View from a quadracopter.

http://youtu.be/9ZDkItO-0a4



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 26, posted (9 months 2 weeks 5 days 17 hours ago) and read 10636 times:
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Mission overview video of the last F9 launch. Contains a brief bit of video of the 1st stage relight.

This link will start right after 1st stage sep...

http://youtu.be/RtDbDMRG3q8?t=2m22s



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 27, posted (9 months 2 weeks 1 day 17 hours ago) and read 10699 times:
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Pic of 1st stage impact...

http://www.nasaspaceflight.com/2013/.../spacexs-dragon-moved-february-11/



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User currently offlinemaxter From Australia, joined May 2009, 222 posts, RR: 0
Reply 28, posted (9 months 6 days 16 hours ago) and read 10199 times:

Probably not known, but where is the best guess that grasshopper testing will go to from 744m? How soon do you believe the landing struts will be fitted to F9 even if not used for an actual recovered landing/return.


maxter
User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 29, posted (9 months 6 days 14 hours ago) and read 10196 times:

Quoting maxter (Reply 28):
Probably not known, but where is the best guess that grasshopper testing will go to from 744m? How soon do you believe the landing struts will be fitted to F9 even if not used for an actual recovered landing/return.

They intend to put legs on CRS-3 in February, but won't delay the rocket if the legs aren't ready. The SE-8 and Thaicom missions require the full F9 capability and won't have any extra fuel or recovery gear included.
The next Grasshopper will test mainly from Spaceport America in New Mexico after a few flights at McGregor. It's reported to have 3 engines for this stage of testing.



Andy Goetsch
User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 30, posted (8 months 4 weeks 1 day 8 hours ago) and read 9778 times:

So much for my sources. Gwenne Shotwell from SpaceX now says
"So what we're moving to now is what we call the Falcon Niner — Falcon 9R reusable — and that is a full Falcon 9 first stage, 9 engines and retractable landing gear. So that is the vehicle that we will be bringing to New Mexico".



Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 31, posted (8 months 4 weeks 1 day 8 hours ago) and read 9770 times:
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Quoting nomadd22 (Reply 30):
"So what we're moving to now is what we call the Falcon Niner — Falcon 9R reusable — and that is a full Falcon 9 first stage, 9 engines and retractable landing gear. So that is the vehicle that we will be bringing to New Mexico".

Will this be Grasshopper 2 then? They'll need to fly it quick if they intended to recover CRS-3.



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User currently offlinemaxter From Australia, joined May 2009, 222 posts, RR: 0
Reply 32, posted (8 months 4 weeks 3 hours ago) and read 9625 times:

Yes thanks for that, wonder if they use it for CRS3 then, if so where will the recovery location be?

Cheers and thanks



maxter
User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 33, posted (8 months 3 weeks 6 days 20 hours ago) and read 9587 times:

I don't think there's serious consideration of landing the CRS-3 booster. They'd like to fly the whole recovery profile and test the leg deployment, but it will still wind up in the water. Hopefully, they can get it back intact from there.


Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 34, posted (6 months 4 days 14 hours ago) and read 7751 times:
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Pix here of the Cassiope first stage about to impact. Note engine appears to be firing...

http://www.zerognews.com/2013/10/15/...d-video-of-next-gen-falcon-9-demo/



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 35, posted (5 months 1 week 3 days 9 hours ago) and read 6699 times:
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CRS-3 will have legs and attempt soft splashdown of the first stage.

http://www.nasaspaceflight.com/2014/...port-legs-attempt-soft-splashdown/



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User currently offlinetravelavnut From Netherlands, joined May 2010, 1595 posts, RR: 7
Reply 36, posted (5 months 1 week 21 hours ago) and read 6343 times:

Quoting zanl188 (Reply 35):

CRS-3 will have legs and attempt soft splashdown of the first stage.

http://www.nasaspaceflight.com/2014/...down/

A picture Tweeted by Elon ( https://twitter.com/elonmusk );


"Mounting landing legs (~60 ft span) to Falcon 9 for next month's Space Station servicing flight"

"However, F9 will continue to land in the ocean until we prove precision control from hypersonic thru subsonic regimes"

2014 is turning out be an awesome spaceflight year  



Live From Amsterdam!
User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 37, posted (3 months 2 weeks 1 day 5 hours ago) and read 5212 times:

Well, in the space of two days, the three engine next version of Grasshopper made it's maiden fight at McGregor and CRS3 went off with the 1st stage making a soft landing in the ocean. Apparently, there are two three engine test version of the recoverable first stage. One will stay in McGregor and one will test in New Mexico. The 9 engine Grasshopper 2 story was an old one before they changed it to 3 engines. Gwenne jumped the gun a little with that one.


Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 38, posted (3 months 2 weeks 22 hours ago) and read 5160 times:
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Quoting nomadd22 (Reply 37):

Video of yesterdays F9R flight:

http://youtu.be/0UjWqQPWmsY

Waiting for hard data on how CRS3 1st stage landing went...

Going to be an exciting year for SpaceX....



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 39, posted (3 months 1 week 8 hours ago) and read 4571 times:
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Elon Musk / SpaceX press conference regarding CRS-3 boost stage landing. Also took question regarding law suit SpaceX recently filed against US Govt.

http://youtu.be/3p2D701zfZU

Stage landed intact, however broke up due to wave action. They have video however it's of poor quality and they are trying to clean it up prior to release. Musk expects a boost stage to make a landing at Canaveral prior to the end of 2014.



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User currently offlineGDB From United Kingdom, joined May 2001, 13170 posts, RR: 77
Reply 40, posted (3 months 6 days 14 hours ago) and read 4505 times:

Another step in what could be one of the most significant advances in access to space ever.
The mind boggles when you consider that if this becomes standard on the Falcon range, including planned heavy lift versions, what the implications for not only access to low Earth orbit but potentially also for exploration, including manned, of the Moon, Asteroids and Mars.


User currently offlinewingman From Seychelles, joined May 1999, 2219 posts, RR: 5
Reply 41, posted (3 months 5 days 16 hours ago) and read 4360 times:

Quoting GDB (Reply 40):
Another step in what could be one of the most significant advances in access to space ever.

And to think, accomplished by one small company essentially still in it's infancy (relatively speaking) that is competing against master rocket builders like Boeing, LM, and even NASA itself. Musk should slap stickers on Teslas that say "My Other Car is a Falcon 9 Soft Lander". This guy is a different category of Homo Sapiens.


User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 42, posted (3 months 5 days 16 hours ago) and read 4359 times:
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Quoting wingman (Reply 41):

At $400M a pop on a sole source contract I can understand why ULA wants to ride the gravy train as long as possible. As a taxpayer though I've got to root for Musk & SpaceX.



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 43, posted (3 months 5 days 12 hours ago) and read 4278 times:

The FH will actually be more of a problem. The center core will be a lot faster and farther downrange than an F9 first stage when it's separates, so it will take a lot more to get it back home.


Andy Goetsch
User currently offlinetugger From United States of America, joined Apr 2006, 5436 posts, RR: 8
Reply 44, posted (3 months 5 days 12 hours ago) and read 4276 times:

Quoting nomadd22 (Reply 43):
The FH will actually be more of a problem. The center core will be a lot faster and farther downrange than an F9 first stage when it's separates, so it will take a lot more to get it back home.

Would you not simply go suborbital and circle round to "get it back home"? A Pacific landing could be fairly simple to achieve I would think.

Tugg



I don’t know that I am unafraid to be myself, but it is hard to be somebody else. -W. Shatner
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 45, posted (3 months 5 days 10 hours ago) and read 4244 times:
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Quoting tugger (Reply 44):

Adds a lot of weight for thermal protection. Maybe when they sort out a way to recover the second stage.



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User currently onlineAustrianZRH From Austria, joined Aug 2007, 1376 posts, RR: 0
Reply 46, posted (3 months 4 days 14 hours ago) and read 4172 times:

Although not entirely related to the recoverable first stage, there's some pretty cool footage of the CRS-3 launch available on the tube:

https://www.youtube.com/watch?v=Od-lON4bTyQ

Launch happens at 40:00, staging at 42:45, and Dragon separation just past 50:00. I found especially the video footage of the red glow of the second stage engine nozzle pretty amazing.

(Did not find a CRS-3 thread on here, so I'm posting it here.)



WARNING! The post above should be taken with a grain of salt! Furthermore, it may be slightly biased towards A.
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 47, posted (3 months 1 day 12 hours ago) and read 3983 times:
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Latest F9R test, this time to 1000M..

http://youtu.be/ZwwS4YOTbbw



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 48, posted (3 months 1 day 11 hours ago) and read 3963 times:
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FWIW, CRS-3 first stage landing video:

http://www.spacex.com/news/2014/04/29/first-stage-landing-video

Not much there but it's clear the legs deployed as planned



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User currently offlinemaxter From Australia, joined May 2009, 222 posts, RR: 0
Reply 49, posted (2 months 3 weeks 22 hours ago) and read 3594 times:

Some info on CRS-3 soft ocean landing outcomes - Elon at the National Press Club

https://www.youtube.com/watch?v=LcgfHslGjII



maxter
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 50, posted (2 months 2 days 16 hours ago) and read 2940 times:
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More enhanced CRS3 landing video from NASASpaceflight.com. Shows leg deploy:

http://youtu.be/XoufUV5oGTo

Related news:

FAA has published a draft environmental impact statement for DragonFly testing at SpaceXs Texas testing site. Dragonfly is the propulsive landing test article for the crewed Dragon, now named Dragon V2. Testing expected to begin late this year and will include both parachute and rocket landing tests.

Dragon V2 was unveiled by Elon Musk on Thursday night. In a very Tony Stark style if you ask me... Video here:

http://youtu.be/yEQrmDoIRO8



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 51, posted (1 month 1 week 6 days 9 hours ago) and read 2293 times:
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F9R goes to 1000M and deploys steering fins....

http://youtu.be/DgLBIdVg3EM



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 52, posted (1 month 1 week 5 days 21 hours ago) and read 2314 times:

I hadn't heard of those grid fins before I saw that video. Pretty cool. It's starting to look like a spaceship.


Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 53, posted (1 month 1 week 5 days 9 hours ago) and read 2142 times:
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Quoting nomadd22 (Reply 52):

I'd heard about the fins, wasn't sure what form they'd take. Didn't know they'd display so much motion...

I'm getting the itch to see 3 cores return after a F9H launch.....



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User currently offlineairplaneaddict From United States of America, joined May 2010, 12 posts, RR: 4
Reply 54, posted (1 month 1 week 5 days 9 hours ago) and read 2142 times:

http://www.spacex.com/webcast/ launch in 16 minutes

User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 55, posted (1 month 1 week 4 days 16 hours ago) and read 2078 times:
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Quoting airplaneaddict (Reply 54):

Scrubbed due to a 2nd stage pressurization problem. Rescheduled to this afternoon at 1746 EDT. Not sure if they'll attempt a soft landing with the first stage... Anybody know?



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 56, posted (1 month 1 week 4 days 14 hours ago) and read 2058 times:

Quoting zanl188 (Reply 55):
Not sure if they'll attempt a soft landing with the first stage... Anybody know?

Not on land. But the ocean landing (oceaning?) will be a lot closer to shore, so they should get a lot better video.
I'm wondering if it's about time to fire the head Helium guy at SpaceX. Just about every recent problem they've had is helium related.



Andy Goetsch
User currently offlineOroka From Canada, joined Dec 2006, 911 posts, RR: 0
Reply 57, posted (1 month 1 week 4 days 13 hours ago) and read 2041 times:

Quoting nomadd22 (Reply 56):
But the ocean landing (oceaning?)

I think that would be considered a controlled splash-down.


User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 58, posted (1 month 1 week 4 days 13 hours ago) and read 2045 times:
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Quoting nomadd22 (Reply 56):

Well it has legs... and shiny engines....


Courtesy: Spaceflightnow.com



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 59, posted (1 month 1 week 4 days 10 hours ago) and read 2011 times:
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Launch time now 1839 EDT, about 45 minutes from now. No webcast for this attempt... 

edit: scrub! No go for weather

[Edited 2014-06-21 15:31:39]


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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 60, posted (1 month 1 week 4 days 4 hours ago) and read 1968 times:

They'll try again tomorrow (Sunday) with a 4 hour window. Orbcomm is only half a payload, so they have plenty of leeway for a wide launch window and still have fuel for the 1st stage return test.
Almost makes you wonder why they need Grasshopper if they can already bring it back.



Andy Goetsch
User currently offlinemoo From Falkland Islands, joined May 2007, 3884 posts, RR: 4
Reply 61, posted (1 month 1 week 3 days 23 hours ago) and read 1947 times:

Quoting nomadd22 (Reply 52):
I hadn't heard of those grid fins before I saw that video. Pretty cool. It's starting to look like a spaceship.

The Russians use them on the R-77 missile (a rough equivalent of the AMRAAM), and the have been used on the MOAB  


User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 62, posted (1 month 1 week 3 days 20 hours ago) and read 1914 times:
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Quoting nomadd22 (Reply 60):

They need to satisfy the FAA and the range that they can bring it back on target.

I suspect the reason for no webcast yesterday is they knew weather was iffy and likely no chance to fly. Doesn't look much better, weather wise, for today.



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 63, posted (1 month 1 week 3 days 13 hours ago) and read 1843 times:
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Scrubbed for weather today. I understand wx was bad enough they didn't even tank. Next opportunity looks like Tuesday afternoon.


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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 64, posted (1 month 3 days 22 hours ago) and read 1519 times:
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Final CRS-3 landing video restoration:

http://youtu.be/CjZ33C9JZTM



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 65, posted (2 weeks 4 days 19 hours 41 minutes ago) and read 967 times:
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Quoting zanl188 (Reply 63):
Scrubbed for weather today. I understand wx was bad enough they didn't even tank. Next opportunity looks like Tuesday afternoon.

Orbcomm launch is now set for 1144 EDT today, a little more than 3 hours from now. Weather is 50/50 at the moment and gets worse as the day goes by.

Spaceflightnow.com has fairly decent coverage here:

http://www.spaceflightnow.com/falcon9/010/status.html

[Edited 2014-07-14 05:39:42]


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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 66, posted (2 weeks 4 days 18 hours 31 minutes ago) and read 946 times:
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Launch now set for 1115 EDT. Weather 60% favorable.


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User currently offlineTugger From United States of America, joined Apr 2006, 5436 posts, RR: 8
Reply 67, posted (2 weeks 4 days 16 hours 50 minutes ago) and read 918 times:

Nice launch! Now wondering about the first stage recovery/landing....

Tugg



I don’t know that I am unafraid to be myself, but it is hard to be somebody else. -W. Shatner
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 68, posted (2 weeks 4 days 15 hours 34 minutes ago) and read 908 times:
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Twitter from Musk states:

Rocket booster reentry, landing burn & leg deploy were good, but lost hull integrity right after splashdown (aka kaboom)



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User currently offlinenomadd22 From United States of America, joined Feb 2008, 1832 posts, RR: 0
Reply 69, posted (2 weeks 4 days 15 hours 33 minutes ago) and read 920 times:

All 6 satellites successfully deployed. The stage re-entered, deployed legs and made a soft landing, but the tank lost integrity and it sank. Could be that hot engine doesn't take well to being dunked in cold water. The stage isn't really meant to tip over and float on waves anyhow. It might never stay intact with water landings. Hopefully, it's shallow enough to recover this time. If it looks like it's reliably controllable, maybe they can start bringing it back to land soon.


Andy Goetsch
User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 70, posted (1 week 3 days 11 hours 9 minutes ago) and read 497 times:
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YouTube video of 1st stage reentry and landing for the Orbcomm launch.

Lens ices up after the reentry burn.

http://youtu.be/CQnR5fhCXkQ



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User currently offlinezanl188 From United States of America, joined Oct 2006, 3504 posts, RR: 0
Reply 71, posted (1 week 3 days 9 hours 44 minutes ago) and read 478 times:
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http://www.spacex.com/news/2014/07/2...-lands-falcon-9-rocket-first-stage

At this point, we are highly confident of being able to land successfully on a floating launch pad or back at the launch site and refly the rocket with no required refurbishment. However, our next couple launches are for very high velocity geostationary satellite missions, which don’t allow enough residual propellant for landing. In the longer term, missions like that will fly on Falcon Heavy, but until then Falcon 9 will need to fly in expendable mode.

We will attempt our next water landing on flight 13 of Falcon 9, but with a low probability of success. Flights 14 and 15 will attempt to land on a solid surface with an improved probability of success.



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