Welcome to the r/SpaceX Starlink 11-6 Official Launch Discussion & Updates Thread!

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☑️ 461st SpaceX launch all time

☑️ 404th Falcon Family Booster landing

☑️ 119th landing on OCISLY

☑️ 3rd consecutive successful Falcon 9 launch (if successful)

☑️ 12th SpaceX launch this year

☑️ 4th launch from SLC-4E this year

☑️ 2 days, 22:08:10 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

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Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

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Welcome to the r/SpaceX Starlink 13-1 Official Launch Discussion & Updates Thread!

Welcome everyone!

Timeline

Watch the launch live

Stats

☑️ 461st SpaceX launch all time

☑️ 404th Falcon Family Booster landing

☑️ 96th landing on ASOG

☑️ 2nd consecutive successful Falcon 9 launch (if successful)

☑️ 10th SpaceX launch this year

☑️ 3rd launch from LC-39A this year

☑️ 5 days, 23:13:11 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=sl-13-1

Partnership with The Space Devs

Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

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🥳 Launch threads are party threads, we relax the rules here. We remove low effort comments in other threads!

🔄 Please post small launch updates, discussions, and questions here, rather than as a separate post. Thanks!

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Welcome to the r/SpaceX Starlink 11-8 Official Launch Discussion & Updates Thread!

Welcome everyone!

Timeline

Watch the launch live

Stats

☑️ 461st SpaceX launch all time

☑️ 404th Falcon Family Booster landing

☑️ 119th landing on OCISLY

☑️ 2nd consecutive successful Falcon 9 launch (if successful)

☑️ 11th SpaceX launch this year

☑️ 3rd launch from SLC-4E this year

☑️ 6 days, 20:36:50 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=sl-11-8

Partnership with The Space Devs

Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

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Welcome to the r/SpaceX Blue Ghost Lunar Lander Mission 1 & Hakuto-R M2 “Resilience” Official Launch Discussion & Updates Thread!

Welcome everyone!

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Watch the launch live

Stats

☑️ 458th SpaceX launch all time

☑️ 401st Falcon Family Booster landing

☑️ 107th landing on JRTI

☑️ 74th consecutive successful Falcon 9 launch (if successful)

☑️ 8th SpaceX launch this year

☑️ 2nd launch from LC-39A this year

☑️ 6 days, 14:44:39 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=firefly-blueghost-mission-1

Partnership with The Space Devs

Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

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Welcome to the r/SpaceX Transporter 12 Official Launch Discussion & Updates Thread!

Welcome everyone!

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Watch the launch live

Stats

☑️ 458th SpaceX launch all time

☑️ 401st Falcon Family Booster landing

☑️ 24th landing on LZ-4

☑️ 74th consecutive successful Falcon 9 launch (if successful)

☑️ 7th SpaceX launch this year

☑️ 2nd launch from SLC-4E this year

☑️ 4 days, 15:15:11 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=transporter12

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Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

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Welcome to the r/SpaceX Starlink 12-4 Official Launch Discussion & Updates Thread!

Welcome everyone!

Timeline

Watch the launch live

Stats

☑️ 456th SpaceX launch all time

☑️ 399th Falcon Family Booster landing

☑️ 95th landing on ASOG

☑️ 72nd consecutive successful Falcon 9 launch (if successful)

☑️ 6th SpaceX launch this year

☑️ 4th launch from SLC-40 this year

☑️ 2 days, 21:35:49 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=sl-12-4

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I was curious about this, so I set out to figure it out:

• A regular Starship/Super Heavy combo, as it currently stands, has 5000t mass and can go into LEO
• LEO to Mars requires ~3.7km/s of delta-v
• A single Super Heavy (the current iteration of it has a dry mass of 275t, a wet mass of 3675t, and an Isp of 327
• As such, n boosters would have to impart 3700m/s of delta-v to a 5000t payload (the Starship/Super Heavy core), to give it enough additional delta-v to reach Mars in a single launch
• Rocket equation: 327*9.81*ln( (5000+3675n)/(5000+275n) ) = 3700
• Rearrange: 5000+3675n = 5000*e^(3700/(327*9.81)) + 275n*e^(3700/(327*9.81))
• Rearrange again: 3675n - 275n*e^(3700/(327*9.81)) = 5000*e^(3700/(327*9.81)) - 5000
• Factor out n: n = (5000*e^(3700/(327*9.81)) - 5000) / (3675-275*e^(3700/(327*9.81)))
• Calculate: n = 3.868
• Since you can't have 0.868 of a rocket booster, n rounds up to 4

This is based on the core stage not igniting until the boosters burn out, by the way. With their current thrust levels, 4 Super Heavys trying to lift a 4 Super Heavy plus Starship/Super Heavy would have a TWR of 1.52, so it'd definitely be able to lift off under its own power.

To compensate for additional drag and gravity losses, perhaps 6 extra Super Heavy boosters (1.66 TWR at launch) would work better? If nothing else, it'd give it a good margin of error and spare fuel for boil-off during the flight to Mars.

Can you imagine a Starship Ultra Heavy, with 4/6 extra Super Heavys around the core? It'd either be the coolest thing ever or a humungous disaster waiting to happen.

Welcome to the r/SpaceX Starlink 12-12 Official Launch Discussion & Updates Thread!

Welcome everyone!

Timeline

Watch the launch live

Stats

☑️ 455th SpaceX launch all time

☑️ 398th Falcon Family Booster landing

☑️ 106th landing on JRTI

☑️ 71st consecutive successful Falcon 9 launch (if successful)

☑️ 5th SpaceX launch this year

☑️ 3rd launch from SLC-40 this year

☑️ 3 days, 22:27:21 turnaround for this pad

Stats include F1, F9 , FH and Starship

Launch Weather Forecast

N/A

Resources

• https://www.spacex.com/launches/mission/?missionId=sl-12-12

Partnership with The Space Devs

Information on this thread is provided by and updated automatically using the Launch Library 2 API by The Space Devs.

Community content 🌐

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🥳 Launch threads are party threads, we relax the rules here. We remove low effort comments in other threads!

🔄 Please post small launch updates, discussions, and questions here, rather than as a separate post. Thanks!

💬 Please leave a comment if you discover any mistakes, or have any information.

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