Talk:Starship flight test 4

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✠ SunDawn ✠ (contact) 06:53, 9 May 2024 (UTC)

Flight Profile

We don't have official times from SpaceX, and it may be different from IFT-3, so shouldn't the Flight Profile Table be removed? Redacted II (talk) 15:26, 22 May 2024 (UTC)

We should remove it for now, as it's always possible for things like prop load times to change by a few seconds. Stoplookin9 Hey there! Send me a message! 00:00, 23 May 2024 (UTC)

SpaceX has announced official times here but I can't find a source other than this. User3749 (talk) 14:10, 24 May 2024 (UTC)

The source you found is reliable. I'll go add the timeline. Redacted II (talk) 14:15, 24 May 2024 (UTC)

shouldn't the "Booster landing burn shutdown and splashdown" be 00:07:24 instead of 00:07:30? Prettymuchnonone (talk) Prettymuchnonone (talk) 17:30, 13 July 2024 (UTC)

No, landing occurred at 00:07:30 Redacted II (talk) 18:29, 13 July 2024 (UTC)

Source for Jettison of hot-staging ring

At the revision by the time I start this thread, (https://en.wikipedia.org/w/index.php?title=SpaceX_Starship_integrated_flight_test_4&oldid=1227614254) the Flight Profile section contains a statement that goes

To reduce mass during descent, SpaceX is using a temporary design change on this test flight to jettison the booster hot-staging ring. Longer term, SpaceX intends to redesign the hot-staging ring for lighter weight and tight integration with the booster, which will then not be jettisoned.

Inline comment states the intent to redesign was

per SpaceX launch day livecast, at 14:45

Current source for these two sentences doesn't really cover the statement other than proving the ring was indeed jettisoned. A note requesting secondary source is also present.

Is the "launch-day livecast" an acceptable source? (I'd assume there's some way to put a video stream as a source but I'd need to figure it out.) If a primary source (SpaceX) is able to explicitly state these points, would a secondary source be still needed? XrayBravoGolf (talk) 21:31, 6 June 2024 (UTC)

IMO, a secondary source is not needed, as the Hot Staging Ring was visibly jettisoned from the booster (and later visible during EDL) Redacted II (talk) 15:15, 7 June 2024 (UTC)

Periapsis may be incorrect

Given the apoapsis at 213 km of altitude and velocity of 26221 km/h, the periapsis is at -1228 km. The same result can be obtained from other points in time (e.g. at T+10:29 the altitude reaches 164 km and velocity equals 26495 km/h which matches a periapsis altitude around -1200 km). The cited source says "maybe about 10 kilometers below the surface" which imo means it's just a guess. 91.94.89.242 (talk) 01:12, 7 June 2024 (UTC)

The velocity doesn't include earths rotation (otherwise, velocity at launch would be over 1000 km/h!).

Factoring this in, I get a perigee of -12 km (I calculated from telemetry at T+10:30, as at that point latitude would have been close to when it had been at launch) Redacted II (talk) 15:14, 7 June 2024 (UTC)

You may be right indeed. We should still look for a better source that says where the numbers come from though.

But also, the telemetry doesn't generally give us the direction of that velocity so we can't just "add Earth's rotation". It should be easily doable if we assume the telemetry is from the reference frame of the launch. 83.20.165.154 (talk) 15:29, 7 June 2024 (UTC)

I don't think there is a better source. SpaceX doesn't publish apogee and perigee, and previous launch's sources were tweets from Jonathan McDowell.

99% (at least) of the velocity is in the direction of Earths rotation (this is done to reduce dV requirements, and is why the majority of launch pads are on an eastern coast), so the simple addition isn't inducing much of an error. Redacted II (talk) 15:40, 7 June 2024 (UTC)

Yeah, but the trajectory was constantly changing so to calculate the periapsis accurately we need to know the velocity after engine cutoff, above most atmosphere and ideally after it stopped venting propellant. 83.20.165.154 (talk) 15:46, 7 June 2024 (UTC)

The trajectory wouldn't have changed all that much (Air is pretty negligible until ~120 km, and those vents aren't all that powerful), and the farther from T-00:00:00, the less accurate the calculation would be, due to longitudinal drift. Redacted II (talk) 15:49, 7 June 2024 (UTC)

Our armchair analysis doesn't matter, as that would be original research. Even an unachieved orbital altitude like the -10 km shown in the article inforbox now, should not be there, as it just misleads the Wikipedia reader. It is a theoretical number that is only the altitude IF the spacecraft COULD get there.

Moreover, any information in an infobox should summarize key facts that appear in the article, not supplant them and not be the only place in an article that the data is discussed, per MOS:INFOBOX. So the periapsis negative number will be removed unless it merely summarizes something explicated in a paragraph in the article prose. N2e (talk) 11:04, 8 June 2024 (UTC)

The perigee is important information: without that information, the details of the orbit are unknown, except for Apogee.

Think of the difference between GTO and GEO. The apogees are the same, but the perigees are VERY different.

The suborbital nature of the launch can be discussed in the article. For example: "The vehicle, while achieving a near-orbital velocity, was on a suborbital trajectory, as its perigee was ~10 km below Earths surface". That text could easily be added to the article. Redacted II (talk) 13:13, 8 June 2024 (UTC)

Fully agreed that a section on whether this launch (and all previous ones) were suborbital or transatmospheric would be a great addition. Sadly, I haven't found any reliable sources doing that analysis.

Apoapsis and periapsis describe the shape of the orbit. It doesn't matter that the spacecraft would not be able to get to one of them, because knowing them still gives us important information (like the fact that it would crash into the surface or that it would re-enter the atmosphere).

Btw original research must not appear in articles. But that's not what's happening here. I brought up my own calculations on the talk page and these were only used to evaluate whether a somewhat cited claim should be removed from the article or not. 83.20.175.130 (talk) 13:51, 8 June 2024 (UTC)

There are reliable sources that state the perigee for IFT-3, IFT-2, and even IFT-1(!).

Additional, routine math is permitted on Wikipedia. Exponents are very much routine math (especially if you have a calculator) Redacted II (talk) 13:58, 8 June 2024 (UTC)

Why in the end of the mission says destroyed?

Acording to what I saw and wikipedia itself, both stages landed sucessfully. Yukielgato (talk) 13:14, 9 June 2024 (UTC)

they sank HamiltonthesixXmusic (talk) 15:41, 11 June 2024 (UTC)

I don't know, IT wasn't destroyed Yukielgato (talk) 17:58, 17 September 2024 (UTC)

Ship and Booster were both destroyed after landing Redacted II (talk) 14:23, 14 October 2024 (UTC)

MDY vs DMY

@RickyCourtney All the other IFT pages used MDY instead of DMY (until you changed them to DMY. I've reverted them on the same grounds as the two reverts here.).

Additionally, the SpaceX Super Heavy and SpaceX Starship (spacecraft) pages use MDY. So there is precedent for using MDY.

Finally, when there is a template of "Use MDY", you cannot just change it to DMY just because you think it will improve the article. That's something you have to discuss, and a consensus needs to be developed in favor of that change before its implemented. Redacted II (talk) 17:09, 9 July 2024 (UTC)

Space agencies and space missions almost always use DMY dates and UTC times. That includes other NASA or SpaceX missions like Demo-2, CRS-30 or Falcon 1 Flight 5 . I don't see a compelling reason why these Starship missions should be any different, except for our national pride in our preferred date format, which I say as an American. -- RickyCourtney (talk) 17:46, 9 July 2024 (UTC)

Every starship article on Wikipedia with three exceptions (SpaceX Starship itself and SpaceX Starship Flight Tests use DMY, and SpaceX Starship design history uses MY) uses MDY.

Its not just Starship. Every single Apollo launch article uses MDY. Redacted II (talk) 18:29, 9 July 2024 (UTC)

Apollo launches aren't modern, Starship is. The other SpaceX missions I mentioned are more contemporaneous. Also the SpaceX Starship is the main article, and gets more attention from experienced editors, so that helps to establish that other pages should follow that format. RickyCourtney (talk) 18:38, 9 July 2024 (UTC)

Those are still launches.

And their isn't an article hierarchy. SpaceX Starship's precedent doesn't outweigh that of Super Heavy, Starship (Spacecraft), IFT-1, IFT-2, IFT-3, and IFT-4. Redacted II (talk) 19:12, 9 July 2024 (UTC)

Let's move this conversation to a better venue: Wikipedia talk:WikiProject Spaceflight#Date format. -- RickyCourtney (talk) 19:51, 9 July 2024 (UTC)

Just commented there Redacted II (talk) 19:51, 9 July 2024 (UTC)

Requested move 30 July 2024

The following is a closed discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review after discussing it on the closer's talk page. No further edits should be made to this discussion.

The result of the move request was: moved. (non-admin closure) Waqar💬 15:21, 13 August 2024 (UTC)

---

• SpaceX Starship integrated flight test 1 → Starship flight test 1
• SpaceX Starship integrated flight test 2 → Starship flight test 2
• SpaceX Starship integrated flight test 3 → Starship flight test 3
• SpaceX Starship integrated flight test 4 → Starship flight test 4
• SpaceX Starship integrated flight test 5 → Starship flight test 5
• SpaceX Starship integrated flight test 6 → Starship flight test 6

– SpaceX has not referred to these missions as "Starship integrated flight test #". They call the campaign "integrated flight testing" but the missions, Starship flight test, Starship's second flight test, Starship's third flight test and Starship’s fourth flight test. This presents us with an opportunity to rename and move these pages to a much simpler, shorter, more natural name. Other sources do call the missions "Starship Flight #, however, my concern is that this may interfere with any future mission naming and including flight test provides an easy, preemptive disambiguation. -- RickyCourtney (talk) 00:32, 30 July 2024 (UTC) — Relisting. Safari Scribe^{Edits! Talk!} 07:25, 6 August 2024 (UTC)

I belive it should either be ONLY IFT-X, or starship flight test x. Both of these are used interchangebly, and both are short and concise. However, I belive the starship flight test x Would be better when taking into account that New people wouldnt know What IFT means. And about confusing the hop tests with flight test of the entire rocket, we could just call those starship hop tests for the same reasons. Fehér Zsigmond-03 (talk) 14:13, 11 August 2024 (UTC)

Support Since I'm the nom. -- RickyCourtney (talk) 18:42, 7 August 2024 (UTC)

Alternate proposal: Change to IFT-5, IFT-4, IFT-3, IFT-2, and IFT-1.

This follows the precedent of the shuttle: each mission is called STS-x, not Space Transportation System-x.

For examples of SpaceX using the Integrated Flight Test name:

https://www.youtube.com/watch?v=_krgcofiM6M Title, as of July 29, 2024, is "Starship | First Integrated Flight Test" Redacted II (talk) 01:50, 30 July 2024 (UTC)

However, for future videos they dropped the integrated: Starship | Second Flight Test, Starship | Third Flight Test and Starship | Fourth Flight Test.

Can you provide evidence that IFT is more of WP:COMMONNAME than just “flight test”? RickyCourtney (talk) 02:15, 30 July 2024 (UTC)

Nonprimary sources using IFT:

https://www.nasaspaceflight.com/2024/06/starship-launch-fourth-time/ "Just over a year after the first integrated flight test"/"three Starship integrated flight tests"/"After that, SpaceX moved to the integrated flight tests."

https://www.nasaspaceflight.com/2024/06/launch-roundup-0603/"Ship 29 and Booster 11 took to the skies for an incredible fourth integrated test flight"

https://www.nasaspaceflight.com/2024/04/ift-4-prepares-starships-future-focus/ "As IFT-4 prepares for launch"/"After the historic IFT-3 launch in March"

https://www.nasaspaceflight.com/2024/03/starship-passes-milestones-ift-4/ "Following IFT-3"/"with the IFT-4 mission"

https://www.nasaspaceflight.com/2024/03/launch-roundup-0312/ "with the IFT-4 mission"

https://arstechnica.com/science/2023/04/spacex-to-make-a-second-attempt-to-launch-its-massive-starship-rocket/?itm_source=parsely-api"SpaceX is calling this Starship launch an "integrated flight test""

Additionally, as far as I can tell, "Flight x" is a contraction of the full "Integrated Flight Test x". Redacted II (talk) 02:53, 30 July 2024 (UTC)

There’s more to common name than just establishing than its being used. We’ve already established via primary sources that unlike STS, “integrated flight test” or “IFT” may be a misnomer, or lots of people just repeating what Elon said in a Tweet once. You and I may know what an integrated flight test is, but there’s a very high chance that a non-technical reader won’t. They certainly won’t know to search for “IFT-4.” The natural language expression would be to search for Starship flight test (or test flight, depending on your English preferences). That’s the essence of common name: natural language. RickyCourtney (talk) 03:11, 30 July 2024 (UTC)

"“IFT” may be a misnomer, or lots of people just repeating what Elon said in a Tweet once."

The link in my first post disproves this: SpaceX used the name. The original name was OFT-1, IIRC

"You and I may know what an integrated flight test is, but there’s a very high chance that a non-technical reader won’t."

Then keep Starship in the title. Also, I am fairly confident (but have no way to prove, disprove, or even test this hypothesis) that the average reader of these pages knows what integrated test flight means.

Starship Flight x leads to a different mode of confusion: are we talking about Starship or Starship? If the understanding of the average reader is where you believe it is, then they will have no idea whether referring to SN8 or S24.

"They certainly won’t know to search for “IFT-4.”"

Spacex Starship flight tests leads them to the article. As does SpaceX Super Heavy, SpaceX Starship (spacecraft), the other IFT articles, List of SpaceX Starship Launches (draft), and SpaceX Starship.

Also, both a Wikipedia and a google search for Starship Flight Test 4 led directly to this page. So, with either search, it leads directly here. Redacted II (talk) 12:04, 30 July 2024 (UTC)

I entirely agree with this reasoning. The existing titles should be kept. WatkynBassett (talk) 19:55, 30 July 2024 (UTC)

Given that neither ITF nor Integrated Flight Test are used by Space nowadays and only show up once in an already outdated primary source and some secondarys just echoing, and that Space X is now using just "Flight Test", we should go with time and change it to the now officially used term. It had been a placeholder anyway when we had nothing official. 47.69.66.56 (talk) 09:58, 31 July 2024 (UTC)

The title Integrated Flight Test in some of the secondaries predates the video from SpaceX. So, they've used it a lot.

(Latest use on the updates section I could fine was the February 26, 2024 update. The IFT-3 page also mentions the term integrated flight test)

And its not just "some" secondaries. For example, NextSpaceflight uses IFT for the IFT-4 and IFT-5 vehicles. There a several others, but I don't feel like making a 50-article collapsible list (again), so just google "Integrated Flight Test 5", or 4, or any other (small) number. Redacted II (talk) 11:59, 31 July 2024 (UTC)

Once more: Current official denomination is what counts. Not "original research" by how many third parties or wp editors. Nor is outdated info relevant, months old before even test flight 3. RickyCourtney's argument is valid and convincing. Only the campaign is officially called "integrated flight testing" by SpaceX, the missions are just "Starship flight tests". No need to argue around and repeating irrelevant pseudo-sources. 47.69.66.56 (talk) 12:20, 31 July 2024 (UTC)

WP:COMMONNAME.

"it generally prefers the name that is most commonly used (as determined by its prevalence in a significant majority of independent, reliable, English-language sources"

Reliable secondary sources support IFT over "Flight Test". (And secondary sources aren't original research, in fact, WP:OR states the exact opposite: they are preferred and deemed "more reliable" than primary sources.) Redacted II (talk) 12:25, 31 July 2024 (UTC)

Maybe now that you finally avoid own orininal research, you might want to re-read the OR page: Primary sources are for plain facts. Secondary sources for "analysis, evaluation, interpretation, or synthesis of the facts, evidence, concepts, and ideas taken from primary sources". This is not the case here. How to call a topic is up to those who perform it, and that is SpaceX.

(The overwhelming number of secondary sources would call tests 1-3 and even 4 failures, but we all know that is not true and trust SpaceX, primary source, that they fulfilled most expected goals.)

Anyway, this is not the place to discuss or indoctrinate about source use. 47.69.66.56 (talk) 13:25, 31 July 2024 (UTC)

"Maybe now that you finally avoid own orininal research"

Stop with the accusations.

"Primary sources are for plain facts. Secondary sources for "analysis, evaluation, interpretation, or synthesis of the facts, evidence, concepts, and ideas taken from primary sources""

This is a misinterpretation of the text. A primary source can only be used for plain facts, as you put it. Meanwhile, "Articles may make an analytic, evaluative, interpretive, or synthetic claim only if it has been published by a reliable secondary source"

"How to call a topic is up to those who perform it, and that is SpaceX."

Again, WP:COMMONNAME. Use the name most commonly used, even if it is not the official name. IFT is more commonly used than "Starship Flight Test".

"(The overwhelming number of secondary sources would call tests 1-3 and even 4 failures, but we all know that is not true and trust SpaceX, primary source, that they fulfilled most expected goals.)"

Check the IFT-3 RfC. I compiled 49 sources that supported IFT-3's status as success. A direct link to the list is here. Also, I haven't seen a single reliable source call IFT-4 a failure. Redacted II (talk) 13:42, 31 July 2024 (UTC)

You are cherry picking again. Just collecting "sources" that fit you. You always do that. Getting tired of that. 47.69.66.56 (talk) 14:36, 31 July 2024 (UTC)

Cherry picking? I haven't found a single example of a reliable source calling IFT-4 a failure, and the vast majority of reliable sources called IFT-3 a success. That list is merely evidence of that.

(If you want to collect sources supporting your claims, then please find them yourself. I'm not going to scour the entire internet looking for them) Redacted II (talk) 14:44, 31 July 2024 (UTC)

"Cherry picking" also is to only answer to arguments you think you can sucessfully contradict, and ignoring everything else while claiming you dismantled everything. This discussion gets fruitless once more. I made my points. 47.69.66.56 (talk) 15:02, 31 July 2024 (UTC)

I believe I have contradicted every one of your points (that I disagree with. I'm not going to contradict an argument that I agree with). But please, let me know what I'm missing. Redacted II (talk) 15:15, 31 July 2024 (UTC)

Well, @Redacted II, I believe it depends on what you mean by "success". If you mean by success in regards to fulfilling mission objectives, then yes, I agree with you. But if you mean in regards to the survivability of the rocket and whether or not it reached orbit, then no, I would not call it successful. As I touched on in the discussion of whether IFT-3 was a success or not, I believe some users are misplacing success for rocket survivability (e.g. if a rocket exploded, it's automatically a failure) rather than the fulfilling of mission objectives. Let me know what you think!

Cheers, --WellThisIsTheReaper ^Grim 18:29, 3 August 2024 (UTC)

IFT-3:

Launch Status (what is listed in infobox of every page BUT the Shuttle): Success (Current consensus and my opinion), as it reached the desired trajectory.

Mission Success: Partial Failure (My opinion), as it achieved its primary goal of reaching the desired trajectory, as well as having a somewhat successful pez test AND a completely successful propellant transfer demo. However, it did fail to achieve the raptor relight, and neither vehicle made it to splashdown intact. Redacted II (talk) 18:36, 3 August 2024 (UTC)

i dont think confusing would be an issue. We could just name the second stage tests starship hop tests, and we could avoid confusion. Fehér Zsigmond-03 (talk) 14:16, 11 August 2024 (UTC)

SUPPORT The relative conciseness of the Starship flight test X format would be consistent with the names used by SpaceX, the FAA and the public. J.pshine5t (talk) 08:46, 5 August 2024 (UTC)

Relisting comment: Good analysis and counter of sources with relevant WP policies will be helpful to determine a clearer consensus. Maintain neutrality. Safari Scribe^{Edits! Talk!} 07:25, 6 August 2024 (UTC)

Note: WikiProject United States, WikiProject Texas, WikiProject Spaceflight/SpaceX, WikiProject Rocketry, and WikiProject Spaceflight have been notified of this discussion. Safari Scribe^{Edits! Talk!} 07:26, 6 August 2024 (UTC)

WikiProject Spaceflight had already been notified, but thanks! Redacted II (talk) 10:45, 6 August 2024 (UTC)

Support. I think niche sources such as SpaceX or NASASpaceflight hold less weight in these kinds of RfC, but this proposal is supported by major sources:

https://edition.cnn.com/2024/03/13/world/spacex-starship-test-flight-scn/index.html (Starship flight test 3)

https://edition.cnn.com/2024/06/04/science/spacex-starship-fourth-flight-faa-approval/index.html (Starship flight test 4)

I think seeking consensus of major sources is much easier and stronger compared to seeking consensus of editors, and should be prioritized in future spaceflight RfCs when it is difficult to discern the prevailing arguments. Sir Kenneth Kho (talk) 18:34, 7 August 2024 (UTC)

Strong support Use the recent official Starship / SpaceX nomination, not anything third parties think is better, nor funny abbreviations. 80.187.71.209 (talk) 09:53, 8 August 2024 (UTC)

WP:RS. The "third parties" are preferable over SpaceX. Redacted II (talk) 11:34, 8 August 2024 (UTC)

Once more, you drop links and misinterpret (on purpose?) what "reliable soures" are, as I have explained to you several times in other discussions. Do you really think nobody cares to look up what RS really says? 47.64.203.33 (talk) 13:59, 8 August 2024 (UTC)

Links have all been edited to reflect the move.Redacted II (talk) 18:26, 13 August 2024 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

No orbital parameters in Infobox

Unlike IFT1/2/3, IFT4 has No orbital parameters in Infobox (eg inclination) - Rod57 (talk) 15:13, 14 October 2024 (UTC)