Author Topic: SpaceX F9 : USA 328-331 / Globalstar FM15 : SLC-40 : 19 June 2022 (04:27 UTC)  (Read 77904 times)

Offline Ken the Bin

  • Full Member
  • ****
  • Posts: 1654
  • US Pacific Time Zone
  • Liked: 2651
  • Likes Given: 2700
Finally!  L-1 weather forecast.  60% 'Go' for June 19.  80% 'Go' for June 20.  Booster Recovery Weather risk is Low-Moderate for June 19.  Upper-Level Wind Shear risk is Moderate for June 20.  All other Additional Risk Criteria are Low.

Offline LH2NHI

  • Member
  • Posts: 17
  • Japan
  • Liked: 14
  • Likes Given: 0
Perhaps the three upper stage engine start this time are due to plans to launch the Globalstar satellite directly at an operational altitude of 1410km instead of the usual 920km?

I'm also curious about how to attach only one satellite to the payload dispenser.
Normally, it should be an adapter that supports batch launching of 6 satellites. Is it a custom order?

Offline LH2NHI

  • Member
  • Posts: 17
  • Japan
  • Liked: 14
  • Likes Given: 0
However, if I think in common sense, satellites of this size should be able to direct burn insertion or at least elliptical parking orbit + apogee kick, and ASDS should not be necessary.

Ignition of the second stage three times is still strange in this mission, Is it a orbital inclination change?

SES1-SECO:7min 15sec
SES2-SECO2:4sec
SES3-SECO3:8sec

Offline Phillipsturtles

  • Member
  • Posts: 57
  • Florida
  • Liked: 94
  • Likes Given: 8

Offline Orbiter

  • Senior Member
  • *****
  • Posts: 2924
  • Florida
  • Liked: 1442
  • Likes Given: 1345
Well this makes it even more interesting https://twitter.com/StephenClark1/status/1538342187859161089

That doesn't seem totally surprising to me. Whatever the secondary payload (s) might be may not be required to in a particular orbital plane.
« Last Edit: 06/19/2022 03:33 am by Orbiter »
Astronomer & launch photographer

Offline Ken the Bin

  • Full Member
  • ****
  • Posts: 1654
  • US Pacific Time Zone
  • Liked: 2651
  • Likes Given: 2700
Mission Control Audio (video id 4riRoJWRE_Y):


Offline daveglo

  • Full Member
  • ****
  • Posts: 459
  • "a big enough engine, even a water tower can fly"
  • St. Louis, MO, USA
  • Liked: 482
  • Likes Given: 427
So, a fascinating tidbit:  The normal weather display video from KSC has been replaced with the static display shown below.

Curiouser and curiouser . . . .

Offline LouScheffer

  • Senior Member
  • *****
  • Posts: 3023
  • Liked: 5307
  • Likes Given: 670
However, if I think in common sense, satellites of this size should be able to direct burn insertion or at least elliptical parking orbit + apogee kick, and ASDS should not be necessary.

Ignition of the second stage three times is still strange in this mission, Is it a orbital inclination change?

SES1-SECO:7min 15sec
SES2-SECO2:4sec
SES3-SECO3:8sec

This is roughly compatible with this sequence:
(a) Launch into a 200 x 3200 km orbit (2 hour period)
(b) coast to 3200 km (about 1 hour, half an orbit)
(c) SECO2 to convert to a 1200 x 3200 orbit (dv about 240 m/s)
(d) release payload 'X'
(e) coast to bottom of orbit
(f) SECO3 to circularize at 1200 x 1200 (dv about 420 m/s)
(g) release Globalstar

Numbers are VERY approximate, but this roughly matches the burn durations and timings.


Offline zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8370
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 4950
  • Likes Given: 44782
T-20 minutes
« Last Edit: 06/19/2022 04:09 am by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Offline daveglo

  • Full Member
  • ****
  • Posts: 459
  • "a big enough engine, even a water tower can fly"
  • St. Louis, MO, USA
  • Liked: 482
  • Likes Given: 427
Stage 2 LOx load started (via MC audio).

Offline zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8370
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 4950
  • Likes Given: 44782
SpaceX, finally
« Last Edit: 06/19/2022 04:27 am by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Offline daveglo

  • Full Member
  • ****
  • Posts: 459
  • "a big enough engine, even a water tower can fly"
  • St. Louis, MO, USA
  • Liked: 482
  • Likes Given: 427
Stage 2 LOx load complete.

Offline zubenelgenubi

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 8370
  • Arc to Arcturus, then Spike to Spica
  • Sometimes it feels like Trantor in the time of Hari Seldon
  • Liked: 4950
  • Likes Given: 44782
Liftoff!
« Last Edit: 06/19/2022 04:43 am by zubenelgenubi »
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
My current avatar is saying "i wants to go uppies!"

Offline Orbiter

  • Senior Member
  • *****
  • Posts: 2924
  • Florida
  • Liked: 1442
  • Likes Given: 1345
No video updates will be given on the progress of the second stage via SpaceX
« Last Edit: 06/19/2022 04:36 am by Orbiter »
Astronomer & launch photographer

Offline ZachS09

  • Space Savant
  • Senior Member
  • *****
  • Posts: 7987
  • Roanoke, TX
  • Liked: 1955
  • Likes Given: 1829
No video updates will be given on the progress of the second stage via SpaceX

We did see SES-1 (Second Engine Start-1) on the Stage 2 camera, then the feed was cut.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline LouScheffer

  • Senior Member
  • *****
  • Posts: 3023
  • Liked: 5307
  • Likes Given: 670
As suspected, no shots of fairing jettison.

Offline Jarnis

  • Full Member
  • ****
  • Posts: 1301
  • Liked: 807
  • Likes Given: 195
No images shown from the front facing second stage camera, no fairing separation shown (or even mentioned!)

Very suspicious, and only reason that I can think of as to why... there is more inside the fairing than just Globalstar FM15.

Offline Zed_Noir

  • Senior Member
  • *****
  • Posts: 4361
  • Canada
  • Liked: 1320
  • Likes Given: 1144
Interesting that SpaceX have the upper stage telemetry readout on the webcast.

Offline Lars-J

  • Senior Member
  • *****
  • Posts: 6714
  • California
  • Liked: 8140
  • Likes Given: 5184

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 9172
  • US
  • Liked: 11524
  • Likes Given: 5157
Anyone want to explain what this "parking orbit" has to do with launching a Globalstar sat?  ::)

Tags:
 

Advertisement NovaTech
Advertisement SkyTale Software GmbH
Advertisement Northrop Grumman
Advertisement
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0