User talk:919181512a

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January 2023

Hello, I'm ZLEA. I noticed that you added or changed content in an article, HAL Tejas Mk2, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page. Thank you. ZLEA _T\^C 02:29, 5 January 2023 (UTC)[reply]

I believe the revert to be wrong, the max speed is at altitude unless sea level is specified. There is no source specifying max speed at sea level. This aircraft hasn't flown yet so i don't expect anyone to find a reliable source that specifies that the claimed max speed is at sea level. Not everyone editing wikipedia understands Mach conversion and how it relates to altitude so i think it's just a bad conversion behind the current value 919181512a (talk) 00:23, 8 February 2023 (UTC)[reply]

The cited source does not specify an altitude at all - and certainly doesn't give an altitude to four significant figures - like your calculation. In the absence of a source, then we should just state the Mach number and not make any assumption about what altitude is appropriate - i.e. just state Mach 1.8. Note that the numerical speed and the mach number don't necessarily correspond, as they appear to come from different sources. Also note that some of the sources claimed are general newspapers, which aren't the best source for detailed technical specs.Nigel Ish (talk) 15:49, 16 February 2023 (UTC)[reply]

The claim that max speed is at sea level is unsourced and it's common practice that aircraft max speed is at altitude unless sea level is specified.

It's the unsourced claim that max speed is at sea level that needs to be verified since it deviates from common practice not the other way around.

There isn't any real sources for max speed since the aircraft has not made it's maiden flight yet (first flight expected 2026 or 2027) and the claims cited by newspapers are only projected.

About the altitude used it's common to use the max altitude but if you use 10000 meters instead of 15240m in the convert the difference in max speed will only be 10km/h.

Either remove the converted speed or assume common practice (at altitude).

Please continue this discussion at Talk:HAL Tejas Mk2. 919181512a (talk) 02:03, 17 February 2023 (UTC)[reply]

I forgot to type that Mach 1.8 at sea level would make HAL Tejas Mk2 the fastest fighter jet in the world.

Here are some Mach speeds at sea level for common jets: F-15 M1.2, MIG-31 M1.21, F-16 M1.2, Rafale M1.1, Typhoon M1.25, Gripen M1.2, SU-35 M1.13, F-22 M1.21 919181512a (talk) 21:54, 17 February 2023 (UTC)[reply]

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