Author Topic: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 13, 2020  (Read 91189 times)

Offline Comga

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Re: SpaceX F9 : Starlink 9 (v1.0 L8) Rideshare : NET June 2020
« Reply #20 on: 05/17/2020 09:58 pm »
Without actual measurements, I doubt we can assume you *can’t* still fit 60 Starlink satellites in there. Possible, but far from safe to assume there won’t be 60 in there. They may have improved packing slightly, there may be more room than there appears, and (unlikely but certainly possible) they may be trying a longer fairing.

Or, more simply, they make the 4 aluminum tension rods that hold the Starlinks together shorter... no need to overthink it.

Also, keeping the dispenser for the rideshare sats on the 2nd stage reduces orbital debris.

Unless the mechanism is just a releasing clamp on each of the top two Starlink satellites that stays attached to those Starlinks.
Releasing the carrier is another mechanism, in addition to leaving debris. 
(That would one good thing about an ESPA ring fixed to the top of the second stage.)

Occam's razor.
Starlink satellites fill the cylindrical part of the fairing.
The ogive nose part is empty.
Starlink satellites can take launch loads from above.
There are two Starlink satellites in each layer.
The two rideshare payloads are much smaller and lighter than Starlink satelites
SpaceX wants to get the full Starlink constellation up as quickly as possible.
What accommodation would require the least modification and complication and impose the least burden on SpaceX and Starlink?
(snip)

[Spaceflight Now] Planet reserves rideshare slots on SpaceX Starlink launches
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Mike Safyan, vice president of launch for San Francisco-based Planet, said the SkySat satellites will be mounted at the very top of the stack of Starlink payloads inside the fairing on each Falcon 9 flight. The SkySats will attach to the Starlink stack using a custom adapter.
;D
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Either they mount the rideshares to the top two satellites or they make a full width structure for the top of the stack that can be configured to carry various numbers and types of rideshare payloads.  The former is simpler
Missed it by THAT much.
Custom adapter on top it is.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline Hummy

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : NET June 2020
« Reply #21 on: 06/04/2020 04:21 pm »
v1.0-L8 target plane 1 prediction that matches Ben Cooper's info (mid-June @ ~9-10pm EDT): +60 degrees relative to L7 plane 1.

Launch opportunities (UTC, Eastern time):

2020-06-13 02:10:13.540586+00:00 2020-06-12 22:10:13.540586-04:00
2020-06-14 01:48:39.413790+00:00 2020-06-13 21:48:39.413790-04:00
2020-06-15 01:27:05.286994+00:00 2020-06-14 21:27:05.286994-04:00
2020-06-16 01:05:31.160198+00:00 2020-06-15 21:05:31.160198-04:00
2020-06-17 00:43:57.033402+00:00 2020-06-16 20:43:57.033402-04:00

Offline Raul

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There is active NOTAM in Mazatlan Oceanic area for Stage2 Debris Reentry of next Starlink launch NET June 13 (UTC).
Quote
MAZATLAN OCEANIC FIR
NOTAM #: A3109/20      Class: International      Start Date UTC: 06/13/2020 0259      End Date UTC: 06/14/2020 0355      Status: Active
A3109/20 NOTAMN
Q) MMFO/QRDCA/IV/BO/W/000/999/
A) MMFO
B) 2006130259
C) 2006140355
D) 0259/0416 DAY 13 JUN
   0238/0355 DAY 14 JUN
E) DANGEROUS AREA FOR REENTRY OF ROCKET FALCON 9
   LATERAL LIMIT: AREA FORMED BY THE UNION OF THE FOLLOWING POINTS:
                  05 00 00N  120 00 00W
                  11 24 43N  120 00 00W
                  16 19 00N  114 48 00W
                  15 16 00N  113 01 00W
                  07 44 00N  116 14 00W
                  05 50 17N  117 24 06W
                  05 00 00N  120 00 00W
F) MSL
G) UNL

Online zubenelgenubi

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Cross-post:
http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html
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The next SpaceX Falcon 9 rocket from Cape Canaveral will launch the ninth batch of Starlink internet satellites from pad 40 on June 12 at around 9-10pm EDT.
June 12, 9-10 pm EDT = June 13, 0100-0200 UTC
« Last Edit: 06/05/2020 01:29 am by zubenelgenubi »
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Offline jpo234

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Starlink launch 10, there seems to be no dedicated thread yet

https://twitter.com/nextspaceflight/status/1268997874559225856

[zubenelgenubi: This is copy/pasted to the appropriate launch thread here, which was created shortly after this post.]
« Last Edit: 06/09/2020 06:18 pm by zubenelgenubi »
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Offline Raul

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : NET June 12, 2020
« Reply #25 on: 06/05/2020 09:21 pm »
Replacing NOTAM moving Starlink launch more left - NET Friday June 12 (at around 09:15 UTC).
Quote
MAZATLAN OCEANIC FIR
NOTAM #: A3154/20      Class: International      Start Date UTC: 06/12/2020 1034      End Date UTC: 06/13/2020 1130      Status: Active
A3154/20 NOTAMR A3109/20
Q) MMFO/QRDCD/IV/BO/W/000/999/
A) MMFO
B) 2006121034
C) 2006131130
D) 1034/1151 DAY 12
   1013/1130 DAY 13
E) DANGEROUS AREA FOR FALCON 9 REENTRY
   LATERAL LIMIT: AREA FORMED BY THE UNION OF THE FOLLOWING POINTS
                  16 19N  114 48W
                  15 16N  113 01W
                  07 44N  116 14W
F) MSL
G) UNL

Offline Hummy

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It looks like they changed launch time to avoid worsening weather. In that case L5 group 3 will provide 18th initial plane (not accounting for stragglers) on Aug 5th according to my estimate. L8 would have provided it on Aug 1st. Not much difference. 18 evenly distributed planes I believe are needed for the private beta.

Online FutureSpaceTourist

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https://twitter.com/booster_buddies/status/1269842343940718592

Quote
Looks like OCISLY is getting ready for yet another Starlink mission currently slated for 6/12.

Offline Elthiryel

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Booster 1059.3 is going to be used for this mission.

Previous flights:
CRS-19 in December 2019
CRS-20 in March 2020

OCISLY is going to be used for booster landing.

Source: https://nextspaceflight.com/launches/details/2573
« Last Edit: 06/08/2020 07:25 pm by Elthiryel »
GO for launch, GO for age of reflight

Offline Hummy

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Launch Hazard Area and Airspace Closure Area have been published. We are back to Jun 12 night launch. 9:32 - 11:30 pm EDT. Minor adjustment to my previous launch time prediction: Jun 12, 10:07 pm EDT (calculated relative to L7 launch time to target L7 +60 degrees RAAN).
« Last Edit: 06/08/2020 08:37 pm by Hummy »

Offline Alexphysics

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NOTAM's still say morning - not night - launch and are very recent, like from just a few hours ago.

June 12th NOTAM: https://tfr.faa.gov/save_pages/detail_0_7307.html

June 13th NOTAM: https://tfr.faa.gov/save_pages/detail_0_7452.html

It's also well known that the 45th SW Hazard maps are usually uploaded a bit behind in time like they are usually not very well updated and tend to take some time until they're finally updated. Something like this happened on a Starlink mission earlier this year

Offline Hummy

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What about the night NOTAM? Is it marked obsolete/inactive?

Offline gongora

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What about the night NOTAM? Is it marked obsolete/inactive?

There are only TFRs for the mornings

Offline Hummy

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I see. I was thinking of the NOTAM in Mazatlan Oceanic area for Stage2 posted above.

Offline gongora

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I see. I was thinking of the NOTAM in Mazatlan Oceanic area for Stage2 posted above.

That still exists, but it covers 24 hours.  Also it's for stage 2 reentry so could be a little after the launch time.
For Cape Canaveral the TFRs are in the morning.
« Last Edit: 06/08/2020 09:55 pm by gongora »

Online FutureSpaceTourist

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 12, 2020
« Reply #35 on: 06/09/2020 12:21 am »
https://twitter.com/kyle_m_photo/status/1270134606407389184

Quote
OCISLY has departed port canaveral being towed by Finn Falgout for the next starlink mission.  #SpaceXFleet #SpaceX

Online FutureSpaceTourist

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 12, 2020
« Reply #36 on: 06/09/2020 04:06 pm »
L-3 launch weather forecast is 80% GO

Online FutureSpaceTourist

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 12, 2020
« Reply #37 on: 06/09/2020 06:53 pm »
Updated launch hazard area with the correct times

Online FutureSpaceTourist

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 12, 2020
« Reply #38 on: 06/09/2020 10:42 pm »
Looks like this will be heaviest F9 payload to date:

https://twitter.com/thesheetztweetz/status/1270469107465490432

Quote
I asked SpaceX if launching Planet's 3 SkySat satellites meant the company would have to reduce the number Starlink satellites from 60 on each launch but it looks like there's room at the top of the stack (view from inside the Falcon 9 rocket nosecone):
https://www.cnbc.com/2020/06/09/planets-skysats-will-take-images-up-to-12-times-a-day-launched-with-help-of-spacex.html

From CNBC article:

Quote
[Planet’s VP of launch Mike] Safyan said that his company built a “a custom adapter plate that allows us to fit on top of the Starlink stack” inside the rocket’s nosecone.

Offline scr00chy

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Re: SpaceX F9 : Starlink v1.0 L8 Rideshare : June 12, 2020
« Reply #39 on: 06/10/2020 12:04 am »
Exact launch time is June 12, 09:42 UTC, according to SFN and Ben Cooper.

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