Questions tagged [falcon9-r]

Variant of the SpaceX Falcon 9 rocket with reusable first and second stages using recovery systems demonstrated by the SpaceX Grasshopper and F9R-Dev1.

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2answers
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Is there any information about the second and further use of first stage of Falcon 9 v1.1 if it will be landed as intended?

Is there any information available about, If first stage of Falcon 9 v1.1 will land as intended: How many times it can be used again? After which time it will be ready for launch? What need to be ...
4
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2answers
628 views

What are the version number and identification names for each Falcon 9-r boosters?

I would like to track the all the Falcon 9-r boosters that are landing or are attempting to land. I know that the third booster which landed successfully is the F9-0024-S1 but I don't know the ...
3
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3answers
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3* Tonnes Unaccounted for in Falcon 9 FT Weight Wikipedia Calculation?

On the Falcon 9 FT Wikipedia page, the fully fuelled weight of Falcon 9 is only 546 300kg instead of 549,054kg as stated on SpaceX website. 546,300 kg - Wikipedia ...
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2answers
362 views

ASDS Position during Falcon 9R first stage recovery

For the coming CRS-7 mission to the ISS, where exactly will SpaceX position the ASDS for the Falcon 9R first stage recovery attempt? Obviously it will be in the Atlantic Ocean.
3
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1answer
635 views

Falcon 9 - relief valves closing times

From what I understand, prior to the launch, the relief valves are open to allow some of the boiling LOX to evaporate and be replaced with fresh, cold one (we can see oxygen evaporating - and "...
3
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1answer
1k views

Does SpaceX performed low subsonic speed wind-tunnel runs of Falcon 9 booster in landing configuration and with legs eventually opened?

There are NASA reports on Falcon 9 runs in transonic in wind tunnel. Tests were conducted at several orientations and speeds ranging from Mach numbers 0.3, or 228 miles per hour at sea level, to Mach ...
2
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1answer
1k views

How low can the single Merlin engine on the Falcon 9 first stage throttle?

As I understand it, the Merlin 1D engine on the Falcon 9 that is used to land the first stage, is fairly limited in how low it can throttle. This makes landing on the barge more difficult -- a ...
2
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1answer
354 views

SpaceX: Recovery/reuse of upper stages - where would they land?

I know all about the plans for reusing the 1st stage, ocean landing vs. fly back, etc. But, Musk wants to make stages 2 and 3 reusable as well. Surely they would have far too much velocity and height ...
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0answers
556 views

Avionics Systems on board Falcon 9 (Reusable)

What kind of control systems are active and how do they function on board a Falcon 9 booster while it's landing ?

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