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SpaceX F9 - CRS 22 - LC-39A

Grendal

SpaceX Moderator
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Jan 31, 2012
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Launch Date: June 3
Launch Window: 1729 GMT (1:29 p.m. EDT)
Launch site: LC-39A, Kennedy Space Center, Florida
Booster Recovery: ASDS on OCISLY
Booster Type: B1067-1
Orbit: ISS in LEO
Mass: 9,525 kg (20,999 lb) for Dragon and 6,000 kg (13,000 lb) for payload
Dragon Return - July 6

A SpaceX Falcon 9 rocket will launch a Cargo Dragon 2 spacecraft on a cargo resupply mission to the International Space Station. The flight is the 22nd mission by SpaceX conducted under the Commercial Resupply Services contract with NASA. This is the second mission under the second Commercial Resupply Services contract.

10 Cubesats will be deployed ELaNa 36.

 
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Cosmacelf

Well-Known Member
Supporting Member
Mar 6, 2013
9,388
25,328
San Diego
So the trunk opens up and the satellite is deployed by some deployment mechanism? And the other cargo destined for ISS stays intact and continue its journey to ISS?

.. interesting

I believe so. It is a more capable vehicle than people realize. This isn't your grandfather's Soyez!
 
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bxr140

Active Member
Nov 18, 2014
3,148
5,235
Bay Area
So the trunk opens up and the satellite is deployed by some deployment mechanism? And the other cargo destined for ISS stays intact and continues its journey to ISS?

Its likely (I don't know for sure on Dragon) that the cubesats are deployed after ISS docking and possibly even after undocking. That's typically how its done anyway, and the idea is that you don't want the secondary mission to screw up the primary mission.

Think of the dispenser itself as a mailbox that can eject mail on command. Its about that size, and there's a spring mechanism inside that pushes the sat(s) out when the door pops open. Its really simple--bolt somewhere on a rocket, hook up to an initiator circuit, send command when ready, then the oor pops open and the sats get deployed.

Random Dispenser

The beauty of these things is that they can be bolted pretty much anywhere on a space vehicle (from second stages to GEO satellites) and they leverage a launcher's mass margin to a particular orbit, so they're kinda freebies. (Some launchers will actually provide free rides to universities and such). Generally you'll dispensers on any launch that's going to a stable LEO orbit, where 'stable' is high enough that drag doesn't quickly pull the sats down, because cubesats generally don't have ∆V capability. (Or in other words, not a Starlink launch that has a super low perigee)
 

Electroman

Well-Known Member
Aug 18, 2012
6,737
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TX
Its likely (I don't know for sure on Dragon) that the cubesats are deployed after ISS docking and possibly even after undocking. That's typically how its done anyway, and the idea is that you don't want the secondary mission to screw up the primary mission.

Think of the dispenser itself as a mailbox that can eject mail on command. Its about that size, and there's a spring mechanism inside that pushes the sat(s) out when the door pops open. Its really simple--bolt somewhere on a rocket, hook up to an initiator circuit, send command when ready, then the oor pops open and the sats get deployed.

Random Dispenser

The beauty of these things is that they can be bolted pretty much anywhere on a space vehicle (from second stages to GEO satellites) and they leverage a launcher's mass margin to a particular orbit, so they're kinda freebies. (Some launchers will actually provide free rides to universities and such). Generally you'll dispensers on any launch that's going to a stable LEO orbit, where 'stable' is high enough that drag doesn't quickly pull the sats down, because cubesats generally don't have ∆V capability. (Or in other words, not a Starlink launch that has a super low perigee)
Thanks you. But I doubt any sats will be released when the Dragon is docked with ISS, especially the ones that can't do a Delta V. You don't want an object orbiting that close to ISS.
 

bxr140

Active Member
Nov 18, 2014
3,148
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Bay Area
Thanks you. But I doubt any sats will be released when the Dragon is docked with ISS, especially the ones that can't do a Delta V. You don't want an object orbiting that close to ISS.

Did you watch that YouTube link? ;)

Many cubesats have been deployed from ISS. When you run the monte carlos the separation between the ISS and the deployed sats pretty much just keeps increasing over time. Typically the cubesats get pulled down pretty quickly and the ISS is being constantly(ish) boosted up.
 

Grendal

SpaceX Moderator
Moderator
Jan 31, 2012
6,431
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Santa Fe, New Mexico
1622133210540.png
 
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ItsNotAboutTheMoney

Well-Known Member
Jul 12, 2012
11,656
9,754
Maine
It appears that more than half the payload that goes to ISS is just to keep it operational - people, their basic needs, machinery to keep ISS humming. Like any Govt entity :)

So it'd be very useful if there were companies working to lower substantially the cost of payload to orbit.
 

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