Author Topic: SpaceX F9 : OneWeb F17 (40x) : CCSFS SLC-40 : Mar 9, 2023 (19:13 UTC) (Read 32097 times)

FutureSpaceTourist · « **Reply #120 on:** 03/09/2023 08:13 pm »

https://twitter.com/kyle_m_photo/status/1633915482624466946

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Liftoff of Falcon 9 with OneWeb 17

https://twitter.com/kyle_m_photo/status/1633938534787604481

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Falcon 9 coming in for a landing, look at that heat distortion below and above falcon! #SpaceX #Falcon9 #OneWeb17

FutureSpaceTourist · « **Reply #121 on:** 03/09/2023 08:23 pm »

https://twitter.com/spacex/status/1633941127081652224

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Falcon 9 launches 40 @OneWeb satellites to orbit, first stage booster returns to Earth

Photos by Ben Cooper

FutureSpaceTourist · « **Reply #122 on:** 03/09/2023 08:32 pm »

https://twitter.com/johnkrausphotos/status/1633925451826470913

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Falcon 9 stage 1 boostback burn as stage 2 continues to orbit with 40 OneWeb satellites

FutureSpaceTourist · « **Reply #123 on:** 03/09/2023 08:50 pm »

https://twitter.com/spacex/status/1633948219133800449

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Falcon 9 first stage landing at LZ-1

zubenelgenubi · « **Reply #124 on:** 03/09/2023 09:08 pm »

Cross-post:

Quote from: Salo on 03/09/2023 06:15 pm

https://twitter.com/cbs_spacenews/status/1633908894660476948
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F9/OneWeb 17: LIFTOFF! At 2:13:28pm EST (1928 UTC)

zubenelgenubi · « **Reply #125 on:** 03/09/2023 09:10 pm »

Thank you, NSF webcasters!

Thank you, FST, for your launch thread coverage!

FutureSpaceTourist · « **Reply #126 on:** 03/09/2023 09:11 pm »

https://twitter.com/johnpisaniphoto/status/1633951429290258432

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A Falcon 9 rocket takes to the skies over the Space Coast and then lands during the #OneWeb 17 mission. Beaches and causeways were packed with people enjoying spring break and the sights and sounds of a launch. This F9 has been to space and back 13 times.

@considercosmos

FutureSpaceTourist · « **Reply #127 on:** 03/09/2023 09:33 pm »

https://twitter.com/m_ladovaz/status/1633958000204341254

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26/26 sats acquired successfully @OneWeb @SpaceX
Next pass in about 1.5h.. so far so good

FutureSpaceTourist · « **Reply #128 on:** 03/09/2023 09:37 pm »

https://twitter.com/ianpineapple/status/1633959648276480003

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Falcon 9 B1062 returns to LZ-1 after lofting 40 OneWeb satellites out of Earth's atmosphere.

📸Me, with my first-ever launch photography, for @NASASpaceflight

Sam Ho · « **Reply #129 on:** 03/10/2023 03:07 am »

OneWeb confirms successful deployment of 40 satellites launched with SpaceX
Launch 17 brings the total OneWeb constellation to 582 satellites. Third launch with SpaceX makes penultimate mission to achieving global coverage.

https://oneweb.net/resources/oneweb-confirms-successful-deployment-40-satellites-launched-spacex-1

Cape Canaveral, Florida, 9 March, 2023 – OneWeb, the low Earth orbit (LEO) satellite communications company, today confirmed the successful deployment and contact of 40 satellites launched by SpaceX from Cape Canaveral Space Force Station in Florida.

Lift-off took place on Thursday, March 9, 2023, at 2:13pm ET (local). OneWeb’s satellites separated successfully from the rocket and were dispensed using three separation groups over a period of 40 minutes, with the last separation occurring one hour and 35 minutes after launch. Signal acquisition on all 40 satellites has been confirmed.

This launch is OneWeb’s seventeenth to date, and the penultimate mission to complete OneWeb's first-generation (Gen 1) LEO satellite constellation and enable global coverage in 2023. With 582 satellites now in orbit, OneWeb will complete its global footprint of the Gen 1 constellation with a launch scheduled for later this month with ISRO/NSIL.

Today’s launch enables OneWeb to continue expanding its connectivity capabilities as it grows its fleet of satellites and seeks to initiate services for more partners around the world. OneWeb already has connectivity solutions active today in key geographies across the globe and is bringing new areas online by partnering with leading providers including VEON, Orange, Galaxy Broadband, Paratus, Telespazio, and more.

OneWeb and its partners are relentlessly focused on the mission to bridge the digital divide and provide internet connectivity to a greater number of unconnected and underserved rural and remote communities and businesses.

Neil Masterson, Chief Executive Officer of OneWeb, commented: “Today’s launch is an exciting milestone as we are now just one mission away from completing our Gen 1 constellation, which will activate global service in 2023. Now more than ever, OneWeb is dedicated to continuing the momentum we have garnered from the past 17 successful launches, to innovate alongside our trusted partners and deliver connectivity solutions at scale. Each launch is a group effort, and today’s success would not have been possible without the dedication of the entire launch team and our partners here in Florida.”

Webcast playback

Launch highlights available
View on YouTube
https://www.youtube.com/channel/UCzs-1EA5e6MRHXK8NKyqzcw

Launch imagery (Share / download)

OneWeb Launch 17 Media Kit
https://oneweb.net/resources/launch-programme/launch-17

Launch provider

SpaceX

Launch facility

Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida

FutureSpaceTourist · « **Reply #130 on:** 03/10/2023 05:26 am »

https://twitter.com/nextspaceflight/status/1634057994794041350

FutureSpaceTourist · « **Reply #131 on:** 03/10/2023 05:58 am »

https://twitter.com/spacex/status/1633993563020185601

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More photos from today’s launch

FutureSpaceTourist · « **Reply #132 on:** 03/10/2023 06:09 am »

https://twitter.com/mbrostphotos/status/1633926479288455169

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I like a little TEB with my TEA

B1063 igniting it’s center Merlin engine before touching down at LZ-1 after launching the OneWeb-17 mission.

#spacex #oneweb #falcon9

FutureSpaceTourist · « **Reply #133 on:** 03/10/2023 06:17 am »

https://twitter.com/m_ladovaz/status/1634015795003965440

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Thanks @SpaceX @elonmusk ! One year ago we. were told that we could only launch on broomsticks 🧹🧹actually … broomsticks work really ! Go @SpaceX .. you guys rock! ..

FutureSpaceTourist · « **Reply #134 on:** 03/10/2023 06:34 am »

https://twitter.com/tskelso/status/1633970635520229378

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CelesTrak has ephemeris-based SupGP data for all 40 satellites from the #OneWeb-17 launch (2023-029) from Cape Canaveral on a Falcon 9 rocket on Mar 9 at 1913 UTC: . The latest data can be found at: https://celestrak.org/NORAD/elements/supplemental/table.php?FILE=oneweb

OneSpeed · « **Reply #135 on:** 03/10/2023 09:04 am »

Here is a comparison of the booster webcast telemetry from the OneWeb F16 and F17 missions.

The main difference is that like F15, F17 has only a vestigial throttle bucket. So, I have added a simple calculation of the dynamic pressure to the plot, highlighted below. It is perhaps surprising that such a large reduction in acceleration during the F16 throttle bucket results in such a small relative difference in dynamic pressure. However, if the benefit is so small, perhaps there are missions where the whole event could be deleted?

The best part is no part?

Comga · « **Reply #136 on:** 03/10/2023 05:43 pm »

Quote from: OneSpeed on 03/10/2023 09:04 am

Here is a comparison of the booster webcast telemetry from the OneWeb F16 and F17 missions.

The main difference is that like F15, F17 has only a vestigial throttle bucket. So, I have added a simple calculation of the dynamic pressure to the plot, highlighted below. It is perhaps surprising that such a large reduction in acceleration during the F16 throttle bucket results in such a small relative difference in dynamic pressure. However, if the benefit is so small, perhaps there are missions where the whole event could be deleted?

The best part is no part?

While the vast amount of data you generate and share with us is marvelous and greatly appreciated, this addition doesn’t look right.
Because the new curve peaks much later and higher than the “thrust bucket” it would seem to be an erroneous indicator of Max-Q. Perhaps one of the assumptions in the calculation, such as a constant coefficient of drag, is inadequate.

edit: By “higher” I meant that the new curve was still going up after the time of the thrust bucket, which I thought was to reduce the stress of “Max-Q”, but the maximum of the curve occurs later.

OneSpeed · « **Reply #137 on:** 03/10/2023 06:10 pm »

Quote from: Comga on 03/10/2023 05:43 pm

Because the new curve peaks much later and higher than the “thrust bucket” it would seem to be an erroneous indicator of Max-Q. Perhaps one of the assumptions in the calculation, such as a constant coefficient of drag, is inadequate.

Edit: Why do you expect MaxQ and the throttle bucket to coincide? The throttle bucket is usually over well before MaxQ. However, referring back to the plot, you can see that the F16 dynamic pressure drops at the start of the throttle bucket, and stays lower past throttle up all the way to MaxQ.

The callout for MaxQ on the webcasts are at 68 and 70s, the same as in the plots. I have used the simple calculation of q=0.5*ρ*v², and it reflects the callouts.

The height of the dynamic pressure curve is irrelevant, it is simply scaled for display purposes, and is not in the same units as the acceleration plot that shows the throttle buckets. Hope this helps.

FutureSpaceTourist · « **Reply #138 on:** 03/10/2023 09:27 pm »

More photos from SpaceX

FutureSpaceTourist · « **Reply #139 on:** 03/10/2023 10:52 pm »

https://twitter.com/spaceoffshore/status/1634340664392515587

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SpaceX recovery ship Bob should arrive back at Port Canaveral around midnight tonight, hopefully carrying two fairing halves from the OneWeb launch on Thursday.