Science Space Exploration megathread - Page 387

**DaFace** · 07:17 AM

Since a number of cool things are happening in space exploration these days, we'll widen the scope of this thread a smidge. Conversation about all things space exploration are welcome, whether it be from NASA, SpaceX, ULA, Blue Origin, or anyone else. Chances are most of the discussion will still be about SpaceX since they love to make things public and fun, but nothing's off limits. I'll eventually get around to modifying the OP to include resources for other companies too, but in the meantime, feel free to post any cool stuff you run across.

Lists of Upcoming Missions

Spoiler!

How to Watch a Live Launch

Spoiler!

Where to Learn More

Spoiler!

Glossary

Spoiler!

Space discussions tend to get a little bogged down in jargon, so here's a list of terms you might encounter. (Others, please let me know of others that should be added.)

ASDS - Autonomous Spaceport Droneship - The "barges" that they sometimes land rockets on.
Dragon - The cone-shaped capsule that sits at the top of the rocket for ISS-bound launches that holds the cargo (or, in the future, humans).
F9 - Falcon 9, the name of the rocket itself.
FH - Falcon Heavy, the three-booster version.
GTO - Geosynchronous Transfer Orbit, a type of orbit that will eventually result in the satellite orbiting the earth as it turns so that it seems to be in the same spot from the ground (such as DirecTV or Dish satellites). These types of launches are particularly challenging because they require a lot of power to get them into the right orbit, leaving very little fuel left for landing.
HIF - Horizontal Integration Facility - the building near the launch pad where they put all of the pieces of the rocket together before rolling it out to the pad.
ISS - The International Space Station
JRTI - Just Read The Instructions, the name of the "barge" that they land on for west-coast launches.
LEO - Low Earth Orbit, a fairly low orbit shared by many satellites and ISS. These launches usually require less power to achieve the proper orbit, so the first stage can often be landed back on land rather than on a drone ship.
LZ1 - Landing Zone 1, basically a big open slab of concrete at Cape Canaveral where the first stage will attempt to land (for some launches).
NET - No Earlier Than, basically the date they're hoping to launch, but rocket launches have a tendency of getting delayed.
OCISLY - Of Course I Still Love You, the name of the "barge" that they land on for east-coast launches.
RTLS - Return to Landing Site, a mission where the first stage comes back and lands at LZ1.
Starship - SpaceX's next-generation rocket (and spacecraft) that will hopefully one day take us to Mars. Starship is the "second stage" that will carry cargo or people, but also refers to the whole system. (It's confusing, but think of it like the Space Shuttle, which was both the shuttle itself and the entire launch system.)
Super Heavy - The giant booster that will carry Starship to space.

**DaFace** · 01-16-2025, 05:14 PM

Starship Flight 7 breaking up and re-entering over Turks and Caicos pic.twitter.com/iuQ0YAy17O
— Alex D. (@adavenport354) January 16, 2025

**Donger** · 01-16-2025, 05:16 PM

Quote:

Originally Posted by DaFace

Starship Flight 7 breaking up and re-entering over Turks and Caicos pic.twitter.com/iuQ0YAy17O
— Alex D. (@adavenport354) January 16, 2025

Obviously a major malfunction.

**DaFace** · 01-16-2025, 05:16 PM

And another:

Just saw the most insane #spacedebris #meteorshower right now in Turks and Caicos ⁦@elonmusk⁩ what is it?? pic.twitter.com/a7f4MbEB8Q
— Dean Olson (@deankolson87) January 16, 2025

**DaFace** · 01-16-2025, 05:17 PM

Quote:

Originally Posted by Donger

Obviously a major malfunction.

Perhaps. Could be as simple as veering off course and triggering FTS, though.

**Donger** · 01-16-2025, 05:19 PM

Quote:

Originally Posted by DaFace

Perhaps. Could be as simple as veering off course and triggering FTS, though.

Just NASA speak.

**ChiefGator** · 01-16-2025, 06:18 PM

Starship experienced a “rapid unscheduled disassembly.”

At least the booster was caught. Starship burning up is no big deal... that's not where.. you know.. people would be sitting, is it?

EDIT: It's going to be billed as a successful test of the “flight termination system”

**DaFace** · 01-16-2025, 11:39 PM

Quote:

Originally Posted by ChiefGator

Starship experienced a “rapid unscheduled disassembly.”

At least the booster was caught. Starship burning up is no big deal... that's not where.. you know.. people would be sitting, is it?

EDIT: It's going to be billed as a successful test of the “flight termination system”

It's not a big deal in terms of development - they have more right behind it. However, while it doesn't sound like there have been any reported incidents with debris, this definitely splattered chunks all over the place. They had to reroute flights around the area for a while.

I'm guessing the FAA is going to be pretty cranky about this which could delay the next flight until they figure out how to prevent another similar incident.

**Donger** · 01-18-2025, 09:59 AM

"Preliminary indication is that we had an oxygen/fuel leak in the cavity above the ship engine firewall that was large enough to build pressure in excess of the vent capacity. Apart from obviously double-checking for leaks, we will add fire suppression to that volume and probably increase vent area. Nothing so far suggests pushing next launch past next month," Musk said via X, the social media platform he owns, about 2.5 hours after Flight 7 launched. (Starship's Raptor engines are powered by liquid oxygen and liquid methane.)

That pressure overload apparently led to a fire "in the aft section of the ship, leading to a rapid unscheduled disassembly," SpaceX wrote in a blog post about Flight 7 yesterday evening, stressing that this interpretation is based on initial data analyses. ("Rapid unscheduled disassembly" is a term of art for a spacecraft explosion.)

"We will conduct a thorough investigation, in coordination with the FAA, and implement corrective actions to make improvements on future Starship flight tests," the company added, referring to the U.S. Federal Aviation Administration.

"Starship flew within its designated launch corridor — as all U.S. launches do to safeguard the public both on the ground, on water and in the air," SpaceX continued in the blog post. "Any surviving pieces of debris would have fallen into the designated hazard area."

06-01-2014, 09:40 AM
DaFace Kind of a mod Join Date: Aug 2005 Location: Donkey Land Casino cash: $-663101	Space Exploration megathread Since a number of cool things are happening in space exploration these days, we'll widen the scope of this thread a smidge. Conversation about all things space exploration are welcome, whether it be from NASA, SpaceX, ULA, Blue Origin, or anyone else. Chances are most of the discussion will still be about SpaceX since they love to make things public and fun, but nothing's off limits. I'll eventually get around to modifying the OP to include resources for other companies too, but in the meantime, feel free to post any cool stuff you run across. Lists of Upcoming Missions Spoiler! General lists: https://nextspaceflight.com/ http://spaceflightnow.com/launch-schedule/ SpaceX specific list: https://spacexnow.com/upcoming.php How to Watch a Live Launch Spoiler! SpaceX: https://www.spacex.com/launches/ ULA: https://www.youtube.com/user/UnitedLaunchAlliance RocketLab: https://www.youtube.com/user/RocketLabNZ NASATV will also cover some launches (primarily ISS resupply missions): https://www.youtube.com/user/NASAtelevision Where to Learn More Spoiler! Some cool pics... https://www.flickr.com/photos/spacex/ https://www.instagram.com/spacex/?hl=en Twitter feed is usually interesing... https://twitter.com/SpaceX https://twitter.com/elonmusk The SpaceX sub is a great source of info... https://www.reddit.com/r/spacex https://www.reddit.com/r/spacex/wiki/index And for a more forum-style discussion board... http://forum.nasaspaceflight.com/index.php#c17 And there are plenty of YouTube channels with great content... Joe Scott - Lost of "future" discussion. Some about rockets and space. Much that goes beyond. Scott Manley - Super smart dude (engineer) who reviews a lot of major events in space exploration. Frazer Cain (Universe Today) - Podcast-style videos that go in-depth into space topics. Tim Dodd (Everyday Astronaut) - A "random dude" who got really into space (particularly SpaceX). He's a great resource for simple explanations of this stuff, as well as live hosting launches. USLaunchReport - Lost of videos of the more mundane stuff (e.g., booster recovery operations). Not a ton of commentary. NASASpaceFlight - Live hosting of most launches including a ton of video of Starlink operations. Glossary Spoiler! Space discussions tend to get a little bogged down in jargon, so here's a list of terms you might encounter. (Others, please let me know of others that should be added.) ASDS - Autonomous Spaceport Droneship - The "barges" that they sometimes land rockets on. Dragon - The cone-shaped capsule that sits at the top of the rocket for ISS-bound launches that holds the cargo (or, in the future, humans). F9 - Falcon 9, the name of the rocket itself. FH - Falcon Heavy, the three-booster version. GTO - Geosynchronous Transfer Orbit, a type of orbit that will eventually result in the satellite orbiting the earth as it turns so that it seems to be in the same spot from the ground (such as DirecTV or Dish satellites). These types of launches are particularly challenging because they require a lot of power to get them into the right orbit, leaving very little fuel left for landing. HIF - Horizontal Integration Facility - the building near the launch pad where they put all of the pieces of the rocket together before rolling it out to the pad. ISS - The International Space Station JRTI - Just Read The Instructions, the name of the "barge" that they land on for west-coast launches. LEO - Low Earth Orbit, a fairly low orbit shared by many satellites and ISS. These launches usually require less power to achieve the proper orbit, so the first stage can often be landed back on land rather than on a drone ship. LZ1 - Landing Zone 1, basically a big open slab of concrete at Cape Canaveral where the first stage will attempt to land (for some launches). NET - No Earlier Than, basically the date they're hoping to launch, but rocket launches have a tendency of getting delayed. OCISLY - Of Course I Still Love You, the name of the "barge" that they land on for east-coast launches. RTLS - Return to Landing Site, a mission where the first stage comes back and lands at LZ1. Starship - SpaceX's next-generation rocket (and spacecraft) that will hopefully one day take us to Mars. Starship is the "second stage" that will carry cargo or people, but also refers to the whole system. (It's confusing, but think of it like the Space Shuttle, which was both the shuttle itself and the entire launch system.) Super Heavy - The giant booster that will carry Starship to space. Last edited by DaFace; 10-13-2024 at 07:17 AM..
Posts: 52,919	1 0

01-16-2025, 05:14 PM	#5791
DaFace Kind of a mod Join Date: Aug 2005 Location: Donkey Land Casino cash: $-663101	Starship Flight 7 breaking up and re-entering over Turks and Caicos pic.twitter.com/iuQ0YAy17O — Alex D. (@adavenport354) January 16, 2025
Posts: 52,919	1 0

01-16-2025, 05:16 PM	#5793
DaFace Kind of a mod Join Date: Aug 2005 Location: Donkey Land Casino cash: $-663101	And another: Just saw the most insane #spacedebris #meteorshower right now in Turks and Caicos ⁦@elonmusk⁩ what is it?? pic.twitter.com/a7f4MbEB8Q — Dean Olson (@deankolson87) January 16, 2025
Posts: 52,919

01-16-2025, 06:18 PM	#5796
ChiefGator Can these boys not play? Join Date: Apr 2001 Location: Northcentral Florida Casino cash: $7062956	Starship experienced a “rapid unscheduled disassembly.” At least the booster was caught. Starship burning up is no big deal... that's not where.. you know.. people would be sitting, is it? EDIT: It's going to be billed as a successful test of the “flight termination system” __________________ - Mark
Posts: 4,676

01-18-2025, 09:59 AM	#5798
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $7889900 VARSITY	"Preliminary indication is that we had an oxygen/fuel leak in the cavity above the ship engine firewall that was large enough to build pressure in excess of the vent capacity. Apart from obviously double-checking for leaks, we will add fire suppression to that volume and probably increase vent area. Nothing so far suggests pushing next launch past next month," Musk said via X, the social media platform he owns, about 2.5 hours after Flight 7 launched. (Starship's Raptor engines are powered by liquid oxygen and liquid methane.) That pressure overload apparently led to a fire "in the aft section of the ship, leading to a rapid unscheduled disassembly," SpaceX wrote in a blog post about Flight 7 yesterday evening, stressing that this interpretation is based on initial data analyses. ("Rapid unscheduled disassembly" is a term of art for a spacecraft explosion.) "We will conduct a thorough investigation, in coordination with the FAA, and implement corrective actions to make improvements on future Starship flight tests," the company added, referring to the U.S. Federal Aviation Administration. "Starship flew within its designated launch corridor — as all U.S. launches do to safeguard the public both on the ground, on water and in the air," SpaceX continued in the blog post. "Any surviving pieces of debris would have fallen into the designated hazard area." __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 188,536