Author Topic: SpaceX F9 : WorldView Legion Flight 1 : VSFB SLC-4E : 24 April 2024 (18:30 UTC)  (Read 62765 times)

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
DISCUSSION thread for WorldView Legion Flight 1

NSF Threads for WorldView Legion Flight 1 : Discussion
NSF Articles for WorldView Legion Flight 1:

Launch 24 April 2024 at 18:30 UTC (11:30 am PDT).  First two Legion satellites to SSO.  Falcon 9 first stage 10xx-x will launch from VSFB SLC-4E and land at LZ-4.

Other SpaceX resources on NASASpaceflight:
   SpaceX News Articles (Recent)  /   SpaceX News Articles from 2006 (Including numerous exclusive Elon interviews)
   SpaceX Dragon Articles  /  SpaceX Missions Section (with Launch Manifest and info on past and future missions)
   L2 SpaceX Section




Two new launches:
Quote
Maxar Technologies’ DigitalGlobe Selects SpaceX to Launch its Next-generation WorldView Legion Satellites
Quote
The initial block of the multi-satellite WorldView Legion constellation will be launched by two flight-proven Falcon 9 rockets in 2021.
https://www.businesswire.com/news/home/20180314005049/en/Maxar-Technologies%E2%80%99-DigitalGlobe-Selects-SpaceX-Launch-Next-generation

If this is like many other recently designed constellations it could be one launch each from Florida and California?

[SSL 2017-07-06] SSL To Provide Next-Generation Imaging Satellite Constellation to DigitalGlobe
Quote
PALO ALTO, Calif. – MacDonald, Dettwiler and Associates Ltd. (“MDA” or the “Company”) (TSX:MDA), a global communications and information company, today announced that its subsidiary Space Systems Loral (SSL) was selected to provide a next-generation satellite constellation for high-resolution Earth imaging to DigitalGlobe, the global leader in Earth imagery and information about our changing planet. Called WorldView Legion, the Low Earth Orbit (LEO) satellites will more than double DigitalGlobe’s high-resolution capacity in important regions. The contract is valued at several hundred million U.S. dollars..

[Raytheon] DigitalGlobe selects Raytheon as satellite imaging payload provider for WorldView Legion constellation
Quote
EL SEGUNDO, Calif., Oct. 10, 2017 /PRNewswire/ -- Raytheon Company (NYSE: RTN) was recently selected by DigitalGlobe, Inc. as the next-generation WorldView Legion satellite imaging constellation payload provider. Under the contract, Raytheon will deliver the telescopes, detectors and combined electronics to Space Systems Loral, the WorldView Legion space vehicle integrator.

Raytheon's new payload doubles DigitalGlobe's capacity to capture multispectral and 30 cm imagery, while tripling to quadrupling the company's capacity to image high-demand areas. Once the WorldView Legion constellation is on orbit, DigitalGlobe's combined constellation will be able to image the most rapidly changing areas on Earth every 20 to 30 minutes, from sunup to sundown. WorldView Legion will begin launching in 2020.

WorldView Legion on Gunter's Space Page
« Last Edit: 04/19/2024 01:58 pm by zubenelgenubi »

Offline Skyrocket

  • Extreme Veteran
  • Senior Member
  • *****
  • Posts: 2632
  • Frankfurt am Main, Germany
  • Liked: 941
  • Likes Given: 172
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #1 on: 03/14/2018 03:49 pm »
Does anyone has info, how many WorldView-Legion satellites are on one Falcon-9 launch?

Online vaporcobra

Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #2 on: 03/14/2018 04:09 pm »
AncientU missed the best part! ;D Should come as no surprise in the 2020 time frame, but still great to hear.
Quote
"SpaceX is proud to partner with DigitalGlobe to launch the WorldView Legion constellation," said Gwynne Shotwell, President and COO of SpaceX. "We appreciate DigitalGlobe selecting two flight-proven Falcon 9’s to reliably deliver their satellites to orbit.”

Does anyone has info, how many WorldView-Legion satellites are on one Falcon-9 launch?

40 revisits in 24 hours for certain locations would fit well with 6 satellites in an average SSO, I think. Based on the phrasing of the PR and the lowish orbit, I'd bet on 3 satellites per launch. Probably wrong :D
« Last Edit: 03/14/2018 05:42 pm by vaporcobra »

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #3 on: 03/14/2018 04:30 pm »
40 revisits in 24 hours for certain locations would fit well with 6 satellites in an average SSO, I think. Based on the phrasing of the PR and the lowish orbit, I'd bet on 3 satellites per launch.

They're not all in SSO, and the revisit rate is for their combined constellation, not just Legion.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #4 on: 03/29/2018 09:13 pm »
[Spaceflight Now] DigitalGlobe books two launches with SpaceX for Earth-imaging fleet
Quote
Turner Brinton, a DigitalGlobe spokesperson, said the WorldView Legion satellites will be the primary payloads on each of the Falcon 9 flights in 2021. But he said the company is open to making the rocket’s excess lift capability available for rideshares, or secondary satellites.

Offline Rik ISS-fan

  • Full Member
  • ****
  • Posts: 1527
  • the Netherlands
  • Liked: 626
  • Likes Given: 212
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #5 on: 08/13/2018 10:10 pm »
just a link:

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #6 on: 09/20/2018 02:40 am »
SAT-MOD-20180918-00073
Quote
DG Consents Sub, Inc. (“DigitalGlobe”) hereby requests modification of its Earth Exploration Satellite Service (“EESS”) system to add twelve new non-geostationary satellite orbit (“NGSO”) remote sensing satellites. These new satellites (the “WorldView-Legion satellites”) will be organized into two Blocks, increasing the number of satellites licensed under Call Sign S2129 to fifteen.  Block-1 will consist of WorldView-Legion-1 through 6, and Block-2 will consist of WorldView-Legion-7 through 12.
...
Each Block of WorldView-Legion satellites will operate in two circular orbital planes. Each Block of six satellites will be placed into orbit on two separate launches. For each Block two of the satellites to be launched will operate in a sun-synchronous orbital plane, and the remaining four satellites will operate in a 45-degree-inclined plane.
...
This means that their satellites will operate over an altitude range of 450 to 870 kilometers during the initial part of the mission, and they will converge to nominal altitudes of 763 kilometers (equatorial altitude) for the two sun-synchronous satellites, and 518 kilometers (equatorial altitude) for the four 45-degree-inclined satellites
...
Block 1 of the WorldView-Legion satellites are under construction. The launches of WorldView-Legion Blocks 1 and 2 will be staggered and ensure continuity of service to DigitalGlobe’s customers.

As expected this would be one launch each from Vandenberg and Cape Canaveral for WorldView Legion Block 1.

Online vaporcobra

Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #7 on: 04/11/2019 12:19 am »
Quote
When do the first Worldview Legion satellites launch?

Right now, the publicly released schedule is first quarter of 2021. We’re under contract with SpaceX for two launches. This is the first block of a multi-satellite constellation. We’re looking at ways to possibly pull that into the back end of 2020. We’ve been having meetings with others here today to see if we can pull those back to the left. Right now, we’re still on a path to get to first quarter of 2021, but we’re seeing if there are things we can do pull to the left, into 2020.



I’ve heard rumors that you don’t have enough money for Worldview Legion.

That is completely and utterly false. We’re building it on our own. We have more debt than we want to right now, which we’re working on in terms of getting our capital structure into a different place that would be better for our shareowners on the equity side. But we are fully able to fund the Worldview Legion constellation. This is the highest capex year for it. Raytheon is providing the instrument, a highly designed advanced instrument per our specifications. SpaceX is under contract for launches. We’re building the satellites on our own. I’m absolutely certain we’re going to do. Our credit facilities and other things provide us way more latitude than we need with this program.

https://spacenews.com/jablonsky-maxar-interview/

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #8 on: 06/16/2019 02:04 am »
DigitalGlobe's FCC license for the Legion constellation was approved on June 13.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #9 on: 10/10/2019 06:23 pm »

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #10 on: 04/28/2020 02:48 am »
[Raytheon: April 15, 2020] Sharp focus : Next-gen imaging instruments to power WorldView Legion satellites

...

Maxar’s WorldView Legion, a fleet of six Earth-observation satellites, will offer a more accurate and timely view of the ground. The satellites will carry a new imaging instrument from Raytheon Intelligence & Space, one of four businesses that form Raytheon Technologies. It will collect high-resolution images from large, contiguous areas. The number of satellites in orbit will make it possible to revisit a particular area in a short amount of time, producing real-time information that can be important to everything from national security to disaster response and environmental monitoring.

“Our instrument collects images and effectively stitches together a panoramic picture of the ground,” said Wallis Laughrey, vice president of Space Systems at Raytheon Intelligence & Space. “The amount of images collected will be huge. Each satellite will collect imagery that could cover approximately 700,000 square kilometers – about the size of Texas – every day.”

As a satellite passes an area of interest, it essentially swings back and forth, scanning an area 10 kilometers-wide. The image resolution possible with the new instrument will show a level of detail that was not possible before. Users looking at an image of a parking lot will be able to distinguish between a sedan, an SUV, a motorcycle or truck.

“Say you take an image of a coastal city and a building in this city is obscured by a shadow,” said Earl Choi, WorldView Legion chief engineer for Raytheon Intelligence & Space. “Our instrument can not only clearly reveal the building, but let you see underwater obstructions in the nearby ocean, identify different vegetation and soils in the area and tell you the direction of traveling vehicles.”

...

The first set of WorldView Legion satellites will launch in 2021. To meet a one-payload-per-month schedule, RI&S made a significant investment in advanced techniques, including digital, 3D-model-based instructions for assembly, and a software-based, automated telescope alignment system.

“Telescope alignment is incredibly precise, down to nanometers, and keep in mind, the diameter of a human hair is 75,000 nanometers,” said Choi. “Normally, it’s a manual, time-consuming process. Now, we can make minute adjustments at the click of a button, with higher precision and product quality. It’s a big time-saver.” ...


Photo: A Raytheon Technologies engineer positions the instrument's primary mirror using a precise measuring tool called a metrology arm.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : early 2021
« Reply #11 on: 05/04/2020 02:59 pm »
[Space News: May 1, 2020] WorldView Legion remains on track for 2021 launch
Quote
Maxar will begin integrating the satellites and sensors “later this year for a first launch early in 2021 and a second launch in the latter part of 2021,” Walter Scott, Maxar executive vice president and chief technology officer, told SpaceNews.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : early 2021
« Reply #12 on: 08/06/2020 09:35 pm »

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
from Maxar earnings call, flight 1 targeting first week of September from Vandenberg, flight 2 about 3-6 months afterwards.
« Last Edit: 11/05/2020 09:42 pm by gongora »

Offline Jansen

  • Full Member
  • ****
  • Posts: 1997
  • Liked: 2235
  • Likes Given: 373
from Maxar earnings call, flight 1 targeting first week of September from Vandenberg, flight 2 about 3-6 months afterwards.

That’s a six month delay! Any reasons given?

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Will have to listen back later for some details.  Mentioned COVID supplier delays and launch windows around NASA launch.

Said later in call that expect first flight from Vandy but F9 has plenty of performance to do the polar launch from Florida if necessary.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Sounded like they were delayed building the satellites, and then the first week of September was the first launch window available after DART.  (I'm assuming DART is the NASA mission in question, which would mean that one hasn't slipped much if at all.)  They start environmental testing on the Legion satellites early next year.
« Last Edit: 11/05/2020 11:37 pm by gongora »

Offline Jansen

  • Full Member
  • ****
  • Posts: 1997
  • Liked: 2235
  • Likes Given: 373
https://spacenews.com/maxar-q3-2020/

Quote
Before the COVID-19 pandemic, Maxar planned to begin launching WorldView Legion satellites in the first quarter of 2021. Due to the pandemic, however, “some of the vendor hardware is showing up just a little later than we originally planned,” Jablonsky said. Those delays impact the timeline for full integration, which means environmental testing also occurs a little later, he added.

Quote
“We continue to make progress on the integration, assembly and test of all six spacecraft and instruments, and we expect to go into environmental testing early next year,” Dan Jablonsky, Maxar president and CEO, said during a Nov. 5 earnings call. “This is a complex program and many elements need to come together to ensure the level of quality and mission success we expect.”

Offline Jansen

  • Full Member
  • ****
  • Posts: 1997
  • Liked: 2235
  • Likes Given: 373
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #18 on: 11/10/2020 02:00 am »
Does anyone has info, how many WorldView-Legion satellites are on one Falcon-9 launch?

The plan is now for two satellites per launch.

Offline gongora

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 10229
  • US
  • Liked: 13938
  • Likes Given: 5969
Re: SpaceX Falcon 9 : WorldView Legion Flight 1 : 2021
« Reply #19 on: 11/10/2020 02:35 am »
Does anyone has info, how many WorldView-Legion satellites are on one Falcon-9 launch?

The plan is now for two satellites per launch.

Two on the first launch, four on the second launch, because two are going to polar orbit and four to mid-inclination

Tags:
 

Advertisement NovaTech
Advertisement Northrop Grumman
Advertisement
Advertisement Margaritaville Beach Resort South Padre Island
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
0