SpaceX (general discussion)

CRS-11 is a success

First stage made perfect landing, the fifth on Landing zone 1
Second stage work well
and Dragon behave well for it second time in Space
 
Michel Van said:
CRS-11 is a success

First stage made perfect landing, the fifth on Landing zone 1
Second stage work well
and Dragon behave well for it second time in Space
Click to expand...

That is excellent news Michel Van, even better that both the second stage made a perfect landing and Dragon has behaved.
 
They did not land the second stage. And there was no shroud to try to recover.
 
TomS said:
They did not land the second stage. And there was no shroud to try to recover.
Click to expand...

Well Musk and his team had studied the idea in 2011 (see Video)
But the penalty is reduction of payload about 37% do additional hardware in second stage (if i recall that right)
Interesting Musk talk about Falcon Heavy on several occasions, about reuse of second stage.
let see with what they surprise us next

https://www.youtube.com/watch?v=sWFFiubtC3c
 
http://www.businessinsider.com/elon-musk-mars-colony-details-new-space-study-2017-6
 
The paper being mentioned:
 

Attachments

  • space.2017.29009.emu.pdf
    2.2 MB · Views: 10
Interesting Article
About USAF upcoming space budget 2018 and about ULA problem with SpaceX
full story
https://arstechnica.com/science/2017/06/air-force-budget-reveals-how-much-spacex-undercuts-launch-prices/

Also link to cost estimates for launch NRO satellites
http://www.gao.gov/assets/670/661330.pdf

USAF recently budget estimates for fiscal year 2018, and these include a run out into the early 2020s.
at page 109 it get real interesting
http://www.saffm.hq.af.mil/Portals/84/documents/Air%20Force%20Space%20Procurement%20FY18.pdf?ver=2017-
 
Michel Van said:
Interesting Article
About USAF upcoming space budget 2018 and about ULA problem with SpaceX
full story
https://arstechnica.com/science/2017/06/air-force-budget-reveals-how-much-spacex-undercuts-launch-prices/

Also link to cost estimates for launch NRO satellites
http://www.gao.gov/assets/670/661330.pdf

USAF recently budget estimates for fiscal year 2018, and these include a run out into the early 2020s.
at page 109 it get real interesting
http://www.saffm.hq.af.mil/Portals/84/documents/Air%20Force%20Space%20Procurement%20FY18.pdf?ver=2017-
Click to expand...

Highly interesting links Michel Van, thanks for posting. B)
 
Not two more, 10 more. It is the second Iridium flight. And as stated in the article, the core used for BulgariaSat-1 is the one that launched Iridium mission 1.
 
the flight goes well
Despite a close miss on "Of Course I Still Love You"
DDB2zSyVwAADMkO.jpg


spaceX got now two Rocket stages that flow twice in space
 
Hottest and hardest landing they've ever performed to date as well; they hadn't put high hopes on the rocket surviving re-entry, but it managed to pull it off anyway. As seen by the tilt and from an Elon Musk tweet, they used almost all of the emergency crush core (aluminium honeycomb shock attenuators in the leg pistons).
 
Rode hard, put away wet. Yeeehaw!

You ammunition types: suck it!

David
 
New gridfins make an appearance;

http://www.spacex.com/sites/spacex/files/iridium2_vertical.jpg

They are larger, made of forged titanium, are unpainted and have a different pattern.
 
Falcon 9 has successfully taken of from Vandenberg Air Force Base.
 
The Falcon 9 first stage has performed a perfect landing on the Drone Ship.
 
here launch and landing of flight 37

https://www.youtube.com/watch?v=xZMBVLSUxLg
 
The July 2, 2017 launch date is known for some time
SpaceX had announced they want to increase the Launch rate to once per Week.
So June 23 to July, 2 that 10 days to refurbish launch pad 39A, almost match that goal.
Once Cape Canaveral LC-40 is repair, SpaceX can speed things up
and once the launch Complex in Texas is ready, they can launch once a Week.

Oh by the way
Intelsat 35e is to heavy that Falcon 9FT will be not be recovered.
This is last disposable Falcon 9FT launch, the Falcon Heavy will take charge of these heavy payloads
 
Photos of the returned first stage that launched BulgariaSat-1 - note the "roomba" robot being used to hold the rocket steady, as well as its serious tilt caused by the tough landing - in case you're wondering, the landed rocket's CG is around where the "P" is on the vertical "SPACEX":

Hi0VSQP.jpg


BY4WoAT.jpg


6x8I5oG.jpg


RRpxefK.jpg


CC7FFDT.jpg


Photo credit: Mary Ellen Jelen / We Report Space
 
I understand there is a "crush" item that is designed to give way during particularly hard landings but where does it reside, and what is it? ???
 
Probably inside the strut, so that if the piston "bottoms" out its regular travel it'll crush that element, dissipating the energy before it does real damage? Could be a honeycomb piece of some sort, they're fairly common in helicopter and automotive crushable structures AFAIK.

EDIT:

Dragon029 said:
Hottest and hardest landing they've ever performed to date as well; they hadn't put high hopes on the rocket surviving re-entry, but it managed to pull it off anyway. As seen by the tilt and from an Elon Musk tweet, they used almost all of the emergency crush core (aluminium honeycomb shock attenuators in the leg pistons).
Click to expand...

Err... there we go :)
 
sferrin said:
I understand there is a "crush" item that is designed to give way during particularly hard landings but where does it reside, and what is it? ???
Click to expand...
Aluminum crush core. (moon lander used it too) It is in the legs and it is at the tip of the pistons where it connects to the leg. Compare the leg the core is leaing towards vs the more extended legs.
 
The launch of Intelsat 35e was aborted 10 seconds before launch
as computer check find errors in flight computer and guidance system of Falcon 9

so as consolation, Six SpaceX Launches Synchronized To The Landing
https://www.youtube.com/watch?v=4FU0l2JHhGs
 
Better being safe than having the rocket or worse pad 39 destroyed. Any word on when the next launch attempt will be?
 
FighterJock said:
Better being safe than having the rocket or worse pad 39 destroyed. Any word on when the next launch attempt will be?
Click to expand...

Could be Monday night. The launch window is similar, 58 minutes starting at 1937 local time (2337 GMT).
 
In other SpaceX news, they just re-entered and safely splashed down the Dragon capsule from the last ISS resupply mission. This is the second time that capsule has flown, another point in favor of reusability.

https://spaceflightnow.com/2017/07/03/spacex-crs-11-end-of-mission/
 
TomS said:
In other SpaceX news, they just re-entered and safely splashed down the Dragon capsule from the last ISS resupply mission. This is the second time that capsule has flown, another point in favor of reusability.

https://spaceflightnow.com/2017/07/03/spacex-crs-11-end-of-mission/
Click to expand...

Good news about the Dragon capsule making it back down to Earth successfully. Wonder when it will be going back to the space station?
 
Well, it took 3 years to reuse this one (it first flew in 2011 on CRS-4).

There are only a few more missions under this contract though. I believe the second CRS contract will switch to Dragon 2 and hopefully stop doing water landings.
 

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