Talk:List of Falcon 9 and Falcon Heavy launches
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Starlink 6-32 partial failure
[edit]I have just noticed that as of a recent edit http://en.wiki.x.io/w/index.php?title=List_of_Falcon_9_and_Falcon_Heavy_launches&oldid=1223919042 it seems that this mission has had the booster landing specified as a partial failure. I can't find a talk page discussing this so I thought I would start one here to see if we can reach a consensus.
From my point of view, the landing was successful, as the failure was during the recovery. Are there any other missions where this has occurred from which we can draw precedent from? 152.78.0.242 (talk) 18:07, 17 May 2024 (UTC)
- The column in the table is "Booster landing", so success or failure should be based on the landing itself, not whether the booster is subsequently damaged or lost in transport. I'd support changing this to "Success". GoPats (talk) 19:09, 17 May 2024 (UTC)
First 21st Launch and Landing
[edit]SpaceX tweeted yesterday that they completed their first 21st launch and landing which should be added. Erinspice (talk) 04:15, 19 May 2024 (UTC)
Statistics tables
[edit]@Sofeshue Why do we need these extra tables that just repeat the information? The statistics come from the page itself. By duplicating it you've doubled the numbers that need updating it for no apparent benefit. Unless you can give a pretty good justification for them I'm going to go ahead and remove them. Ergzay (talk) 23:42, 6 June 2024 (UTC)
- The bar charts are very rough visual representations and have at least 2 major drawbacks.
- (A) It is very difficult to see clearly the color or put the mouse on the short bars that represent small numbers (1 or 2, say). When these short bars stack, they make it even more difficult to distinguish them: just look at booster landings chart '15, '16, '18, '21.
- (B) The bar charts lack "horizontal" and "vertical" totals. One needs to manually add the bar numbers to get the total launch number for a year, or the total number in a certain category (e.g. drone-ship successes).
- The bar charts may appear visually pleasing, but for anyone who wish to obtain acurate numbers in a quick way, the bar charts are much less convinient than tables. The tables also help double check the accuracy of the bar charts. You can see in the edit history that I corrected the number for F9 v1.1 in '15 from 5 to 6 for the bar charts, bacause I found an inconsistancy between the tables, and pinpointed the problem. I don't think one can discover such a problem by merely looking at the charts. For every new launch, the update effort goes from 4 to 8, and the update is just adding 1 to some numbers, so the extra effort is minimal. In fact, if only one should remain, I believe it's the tables, not the bar charts, as wikipedia should not prioritize fanciness over clearness, convinience. Sofeshue (talk) 04:19, 7 June 2024 (UTC)
- The mistake in the bar chart is actually a reason why we shouldn't further duplicate the information as it's an example of how even more mistakes can creep in. It doesn't fix the potential for mistakes to creep into the bar chart. If you want a table you should create a template that generates both from the same information.
- As to the lacking of totals I don't see that as an issue as you can figure that out from looking at the launch tables. A quick bit of mental math tells you the total by looking at the starting and ending numbers.
- You bring up points that are reasonable, but I don't plan to update the tables myself so you and others will be responsible for keeping them updated. And if anyone else wants to remove them I'll take their side. I still feel they are wasted extra effort that bring little additional information that can't be easily cleaned from just clicking "edit" on the page and looking at the chart data. Ergzay (talk) 11:26, 7 June 2024 (UTC)
- I'll ping a few people who have been editing here for a while to see what they think. @Lazaro Fernandes @C-randles @Abdullah1099 @Mfb Ergzay (talk) 11:28, 7 June 2024 (UTC)
- Listing the total number of launches in a year without the need to add things is nice, but overall I don't think we need the tables. Maybe keep one, or just a list of launches per year. --mfb (talk) 15:25, 7 June 2024 (UTC)
- I don't think I should remove the statistics list Lazaro Fernandes (talk) 15:49, 7 June 2024 (UTC)
- Statistics tables can remove, it doesn't make sense Lazaro Fernandes (talk) 19:55, 7 June 2024 (UTC)
- Removed Lazaro Fernandes (talk) 20:01, 7 June 2024 (UTC)
- Statistics tables can remove, it doesn't make sense Lazaro Fernandes (talk) 19:55, 7 June 2024 (UTC)
- I don't think I should remove the statistics list Lazaro Fernandes (talk) 15:49, 7 June 2024 (UTC)
- Listing the total number of launches in a year without the need to add things is nice, but overall I don't think we need the tables. Maybe keep one, or just a list of launches per year. --mfb (talk) 15:25, 7 June 2024 (UTC)
- @Lazaro Fernandes I have explained above, that the bar charts are (1) difficult to browse, (2) highly prone to errors, (3) difficult to get precise data in a quick manner, all of which can be solved by simple tables. I also said above, that if one to remain, it should be the tables, not the bar charts. Could you explain why you remove the tables instead of the bar charts? Why should wikipedia appear so flamboyant with colors, while sacrificing the convenience to make data readily available? Sofeshue (talk) 21:46, 7 June 2024 (UTC)
- bar graphs are much better since all rockets that have launch statics have bar graphs Lazaro Fernandes (talk) 01:26, 8 June 2024 (UTC)
- Just to clarify what @Lazaro Fernandes is saying. He's saying that all other rocket launch lists on wikipedia have bar graphs and don't have statistics tables like you added. I think an acceptable compromise is @Mfb's suggestion about just having lists of launches per year would be better. Ergzay (talk) 04:04, 8 June 2024 (UTC)
- As to Wikipedia "making data readily available"; Wikipedia isn't really a source for data. It's not supposed to be readily available for use externally. It's to make things easily understandable. The exact precise numbers is only supposed to be useful for correctly displaying the graphs, not to be pulled out and used.
- And as to your point "(2) highly prone to errors", your change actually makes things _more_ prone to errors because there are more pieces of information that all need to be kept in sync with each other. Ergzay (talk) 04:11, 8 June 2024 (UTC)
- I don’t edit much, but it’d be nice to be able to keep both. It’s useful and accessible data for laypeople and enthusiasts alike. 86.15.33.109 (talk) 14:44, 28 June 2024 (UTC)
Starlink 9-3 failure
[edit]- The following discussion is closed. Please do not modify it. Subsequent comments should be made in a new section. A summary of the conclusions reached follows.
- The consensus is to list the Starlink 9-3 launch as a failure. -- RickyCourtney (talk) 18:52, 18 July 2024 (UTC)
Suffice it to say, perigee of <140 km (per McDowell) means the satellites are dead. Will probably list as a failure or perhaps a partial failure per the CRS-1 secondary payload in 2012. [osunpokeh/talk/contributions] 05:35, 12 July 2024 (UTC)
- Failure if they all reenter, as it's a complete loss of spacecraft caused by rocket failure. Partial if they can recover them. That would fit perfectly in line with the rest of spaceflight Wikipedia. Good example would be Mars-96 launch failure. Lower than planned isn't inherently full failure, but it absolutely is if the satellites rapidly deorbit, without a doubt. Lets give it a few days & see what happens. --Jrcraft Yt (talk) 06:22, 12 July 2024 (UTC)
- This sounds like good criteria, since these are primary payloads. Jonathan McDowell's criteria would have it a 0.4 on the scoring scale (described at https://www.planet4589.org/space/jsr/notes/fail.txt) if the orbits aren't raised; 0.75 if they are. A lot of 0.75s are listed as partial fails, most 0.4s are listed as failures on here. Sub31k (talk) 15:30, 12 July 2024 (UTC)
- Agreed. IMO, best thing for a discussion is to pause this topic for a few days, when the starlinks either have reentered or made it to LEO. Redacted II (talk) 15:33, 12 July 2024 (UTC)
- I don't think there's a need to pause the thread when SpaceX communications say:
- The team worked overnight to make contact with the satellites in order to send early burn commands, but the satellites were left in an enormously high-drag environment only 135 km above the Earth (each pass through perigee removed 5+ km of altitude from the orbit’s apogee, or the highest point in the satellite orbit). At this level of drag, our maximum available thrust is unlikely to be enough to successfully raise the satellites. As such, the satellites will re-enter Earth’s atmosphere and fully demise. They do not pose a threat to other satellites in orbit or to public safety.[1]https://www.spacex.com/launches/mission/?missionId=sl-9-3
- It's clear already that the satellites are not going to be raised. Sub31k (talk) 19:54, 12 July 2024 (UTC)
- https://celestrak.org/NORAD/elements/supplemental/table.php?INTDES=2024-129
- One of the sats made it to 191 km. So its still possible (if unlikely) that it'll make it to a usable orbit. We'll know what happens to it in a few days. Redacted II (talk) 21:01, 12 July 2024 (UTC)
- Agreed. IMO, best thing for a discussion is to pause this topic for a few days, when the starlinks either have reentered or made it to LEO. Redacted II (talk) 15:33, 12 July 2024 (UTC)
- This sounds like good criteria, since these are primary payloads. Jonathan McDowell's criteria would have it a 0.4 on the scoring scale (described at https://www.planet4589.org/space/jsr/notes/fail.txt) if the orbits aren't raised; 0.75 if they are. A lot of 0.75s are listed as partial fails, most 0.4s are listed as failures on here. Sub31k (talk) 15:30, 12 July 2024 (UTC)
- A perigee of 140 km would mean they didn't get any thrust in the second burn. In that case SpaceX could stop trying to raise them... so maybe they did get a bit of thrust out of the engine. For now I think it makes sense to call it partial failure, once we know more about the fate of the satellites and sources cover that we can re-visit that. --mfb (talk) 07:43, 12 July 2024 (UTC)
- @Mfb@Jrcraft Yt@Osunpokeh should we count streak from Amos 6 or crs 7 as List of Falcon 9 and Falcon Heavy launches (2010–2019) says Since it was a pre-flight test, SpaceX does not count this scheduled attempt in their launch totals. Some sources do consider this planned flight into the counting schemes, and as a result, some sources might list launch totals after 2016 with one additional launch.
- When it is not in records how can we count it's next mission as start of success streak rather than the mission succeeding crs 7? —🪦NΛSΛ B1058 (TALK) 09:54, 12 July 2024 (UTC)
- We can wait and see what sources use as streak length. My personal preference would be to start at flight 29, i.e. after Amos, or give both. Amos doesn't need a flight number to interrupt a streak of successful missions. --mfb (talk) 11:25, 12 July 2024 (UTC)
- Personally for the Falcon 9 I would have several "Success Streak" lists. These lists would include Launches, Missions, Landings, and Recoveries. The Starlink 9-3 mission ended the first two streaks. AmigaClone (talk) 13:19, 12 July 2024 (UTC)
- Later i found official Guinness World Records starting from AMOS-6 so sticking to it. https://www.guinnessworldrecords.com/world-records/most-successful-commercial-rocket-launcher either way they are all time industry Records as per https://arstechnica.com/space/2024/07/the-unmatched-streak-of-perfection-with-spacexs-falcon-9-rocket-is-over/ @AmigaClone@Mfb —🪦NΛSΛ B1058 (TALK) 14:10, 12 July 2024 (UTC)
- We can wait and see what sources use as streak length. My personal preference would be to start at flight 29, i.e. after Amos, or give both. Amos doesn't need a flight number to interrupt a streak of successful missions. --mfb (talk) 11:25, 12 July 2024 (UTC)
Same as Ariane 6: Partial Failure.- The vehicle deployed the payloads into the wrong orbit, but SpaceX is acting like they may be recoverable.
(If they aren't, then this changes to Failure) Redacted II (talk) 11:53, 12 July 2024 (UTC)- Failure At this point, it looks like only one of the sats made it. Technically, precedent supports Partial Failure, as one did make it, though the orbit may not be usable.Redacted II (talk) 14:45, 14 July 2024 (UTC)
- Disagree that precedent supports Partial Failure. It's true that, in the past, we've called it a partial failure when a rocket places a satellite into a lower orbit than planned, but the satellite was able to boost itself into the correct orbit. What didn't happen in those cases is that 19 other satellites were un-salvageable. One out of 20 is a 5% success, which would get you an F on a test where I'm from. Where's the cut off for success? I don't know and this doesn't seem like the time to litigate that. RickyCourtney (talk) 18:04, 15 July 2024 (UTC)
- "satellite was able to boost itself into the correct orbit."
- This is the part your incorrect on. The orbit only has to be usable.
- Also, it now looks like two of the sats made it out of reentry, but they may be dead. Redacted II (talk) 01:50, 16 July 2024 (UTC)
- Disagree that precedent supports Partial Failure. It's true that, in the past, we've called it a partial failure when a rocket places a satellite into a lower orbit than planned, but the satellite was able to boost itself into the correct orbit. What didn't happen in those cases is that 19 other satellites were un-salvageable. One out of 20 is a 5% success, which would get you an F on a test where I'm from. Where's the cut off for success? I don't know and this doesn't seem like the time to litigate that. RickyCourtney (talk) 18:04, 15 July 2024 (UTC)
- List as Failure. The vehicle deployed only 25% of its payloads, and those it did deploy were into an orbit so low the company admits they are likely un-recoverable. RickyCourtney (talk) 14:46, 12 July 2024 (UTC)
- The Federal Aviation Administration is now calling this a failure. “The incident involved the failure of the upper stage rocket while it was in space.” They are also requiring an investigation, which will suspend Falcon 9 launches until further notice. RickyCourtney (talk) 16:39, 12 July 2024 (UTC)
- That doesn't always mean launch failure.
- That only means an anomaly occurred. Redacted II (talk) 16:46, 12 July 2024 (UTC)
- When a reliable source calls it a failure, so should we. RickyCourtney (talk) 16:47, 12 July 2024 (UTC)
- In theory, this works.
- In practice... no.
- If it was 100% up to sources, then IFT-1 would be a success, and IFT-2 would remain a failure, despite being far more successful than IFT-1. Redacted II (talk) 18:07, 12 July 2024 (UTC)
- Sigh. This again. This is the talk page for the Falcon 9, not Starship. Yes, other stuff exists. Please stay on topic. -- RickyCourtney (talk) 18:18, 12 July 2024 (UTC)
- Established precedent. Other stuff exists, and the precedent established by it impacts this.
- Mentioning how that precedent impacts this event is on topic. Redacted II (talk) 18:20, 12 July 2024 (UTC)
- Sigh. This again. This is the talk page for the Falcon 9, not Starship. Yes, other stuff exists. Please stay on topic. -- RickyCourtney (talk) 18:18, 12 July 2024 (UTC)
- I think you should read further up in the discussion about McDowell, he's the most reliable source there is, more reliable than the FAA. I agree that it's a failure (because all the satellites have likely re-entered), I disagree with how you're determining it.
- News agencies _never_ call missions "partial failures" they just talk about the entire mission being failure or not. Those sources should not be considered reliable for this type of thing. You need professional sources to determine that, like McDowell. Ergzay (talk) 04:54, 13 July 2024 (UTC)
- Seriously, what would be a launch failure? Did the rocket performed it's primary mission and deployed it's payload on the intended orbit? Not at all. Did it become a grounded rocket? Yes? Did the events triggered an mishap investigation? Yes. Not long ago I've seen a graph on Twitter, only one satellite's perigee is above 190 km.
- Ariane 6 at least performed it's primary mission. This doesn't. We can call it safely as a failure. 2001:4C4C:146B:3200:DCD1:6857:571F:A148 (talk) 17:41, 12 July 2024 (UTC)
- It is likely going to be a failure, but should some of the payloads be able to enter a usable orbit, that is a partial failure. Redacted II (talk) 18:06, 12 July 2024 (UTC)
- When a reliable source calls it a failure, so should we. RickyCourtney (talk) 16:47, 12 July 2024 (UTC)
- The Federal Aviation Administration is now calling this a failure. “The incident involved the failure of the upper stage rocket while it was in space.” They are also requiring an investigation, which will suspend Falcon 9 launches until further notice. RickyCourtney (talk) 16:39, 12 July 2024 (UTC)
- This is clearly a failure at this point, given the statement here: https://www.spacex.com/launches/mission/?missionId=sl-9-3 72.76.72.238 (talk) 18:02, 12 July 2024 (UTC)
- Looks like all satellites reentered quickly. --mfb (talk) 10:46, 17 July 2024 (UTC)
- The last info I have (which is 5 days old, admittedly) has one of the sats having made it (191 perigee) Redacted II (talk) 13:07, 17 July 2024 (UTC)
- All except 1 reentered —🪦NΛSΛ B1058 (TALK) 02:02, 18 July 2024 (UTC)
- Yeah, only one is still listed on CelesTrak with a perigee height of 143 km. RickyCourtney (talk) 17:54, 18 July 2024 (UTC)
- The 191 one deorbited —🪦NΛSΛ B1058 (TALK) 17:57, 18 July 2024 (UTC)
- The data for that one is 6 days old.
- There's a good chance it deorbited. Redacted II (talk) 18:17, 18 July 2024 (UTC)
- Yeah, only one is still listed on CelesTrak with a perigee height of 143 km. RickyCourtney (talk) 17:54, 18 July 2024 (UTC)
- All except 1 reentered —🪦NΛSΛ B1058 (TALK) 02:02, 18 July 2024 (UTC)
- The last info I have (which is 5 days old, admittedly) has one of the sats having made it (191 perigee) Redacted II (talk) 13:07, 17 July 2024 (UTC)
- Looks like all satellites reentered quickly. --mfb (talk) 10:46, 17 July 2024 (UTC)
Proposal: Eliminate the recycled booster symbol
[edit]I really think the "recycled booster" symbol is just clutter. While it may have made sense in the early days, nowadays it's just clutter, redundant with the booster launch number suffix. I propose to simply delete it (and the associated captions) from all tables. Although the improvement seems obvious to me, this is a large-scale edit on multiple pages, so it seems worth discussing here first.
If someone can propose a way to visually distinguish new boosters, perhaps a symbol or a background tint, that might be interesting. I haven't found a good Unicode symbol for the purpose (possibilities are the baby emoji 👶, the "sun" symbols ☀ or ☼, or "sparkles" ✨, but nothing's particularly clear), but there are a lot so maybe I'm missing one. 97.102.205.224 (talk) 14:16, 16 August 2024 (UTC)
- @RickyCourtney: Thanks for the feedback. I reverted two analogous edits to List of Falcon 9 and Falcon Heavy launches (2020–2022) and List of Falcon 9 and Falcon Heavy launches (2010–2019) myself pending discussion. Yeah, I'm not very happy with that symbol, either. It's U+2728, in Dingbats (Unicode block) and not an emoji block, so I had hoped it was more common. I also figured out that it makes sense to switch over in 2018. In 2017, there are only a few reflown boosters. In 2018, they overtake new-built (13 to 10, counting Falcon Heavy as 3), and it becomes overwhelming after that. Anyway, can you suggest anything? I've been thinking about the sun ☀ U+2600 and four-pointed star ✦ U+2726. (Both also come in outline versions, but I prefer the solid.) It was mostly the name "sparkles" that associated strongly with "shiny and new" in my mind. 97.102.205.224 (talk) 19:11, 17 August 2024 (UTC)
- @RickyCourtney: I just experimented with U+267A RECYCLING SYMBOL FOR GENERIC MATERIALS ♺ and U+20E0 COMBINING ENCLOSING CIRCLE BACKSLASH ◌⃠ but the former seems too wide to combine well with the latter: ♺⃠ There's also U+1F3D7 BUILDING CONSTRUCTION 🏗, but it's hard to recognize at body text sizes and I'd rather stay in the BMP. Is there a code point for the WEEE "no trash" symbol? The symbol isn't useful itself, but that might be a fruitful code block to look through. 97.102.205.224 (talk) 21:20, 17 August 2024 (UTC)
- If accessibility is our concern, we would choose one of the symbols in the table below, as they are the only ones consistently parsed by screen readers. We could also go with a background tint like the mint green color used on the List of Falcon 9 first-stage boosters article, or we could just let the .2, .3, .4, etc. tell the story.
Details, see: Template:Asterism/Symbols
Unicode symbol | Pronounced as | HTML entity | Template name | Template usage |
---|---|---|---|---|
* | "star" or "asterisk" | *
|
{{asterisk}} | transclusion |
† | "dagger" or "single dagger" | †
|
{{dagger}} | substitution |
‡ | "double dagger" | ‡
|
{{double-dagger}} | substitution |
# | "number" or "hash tag" | #
|
{{number sign}} | transclusion |
° | "degree" or "degrees" | °
|
{{degree}} | substitution |
→ | "right arrow" or "rightwards arrow" | →
|
{{arrow}} | substitution |
↓ | "down arrow" or "downwards arrow" | ↓
|
{{down-arrow}} | substitution |
← | "left arrow" or "leftwards arrow" | ←
|
{{left-arrow}} | substitution |
↑ | "up arrow" or "upwards arrow" | ↑
|
{{up-arrow}} | substitution |
′ | "prime" | ′
|
{{prime}} | transclusion |
- -- RickyCourtney (talk) 19:58, 19 August 2024 (UTC)
- @RickyCourtney: All those symbols seem too ambiguous; the dagger is best, but it's also used in genealogy to mark "death", which doesn't match the desired "birth". So I just now reinstated the edits (Special:Diff/1241236692, Special:Diff/1241238150, Special:Diff/1241239466) with a green background rather than the ugly emoji. How does that look? 97.102.205.224 (talk) 03:41, 20 August 2024 (UTC)
- I am okay with it, however it’s the inverse of the treatment on the List of Falcon 9 first-stage boosters article, so maybe make that your next edit to keep testing the waters. RickyCourtney (talk) 23:20, 21 August 2024 (UTC)
- @RickyCourtney: All those symbols seem too ambiguous; the dagger is best, but it's also used in genealogy to mark "death", which doesn't match the desired "birth". So I just now reinstated the edits (Special:Diff/1241236692, Special:Diff/1241238150, Special:Diff/1241239466) with a green background rather than the ugly emoji. How does that look? 97.102.205.224 (talk) 03:41, 20 August 2024 (UTC)
- -- RickyCourtney (talk) 19:58, 19 August 2024 (UTC)
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