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Honda conducts successful launch and landing of experimental reusable rocket

(global.honda)
1355 points LorenDB | 2 comments | 17 Jun 25 15:02 UTC | HN request time: 0.425s | source
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robszumski ◴[17 Jun 25 15:57 UTC] No.44300646[source]▶
For reference, Rocket Lab's Electron has a wet mass of 13,000 kg. This rocket is much smaller at 1,312 kg wet mass.
replies(2): >>44301143 #>>44309127 #
delichon ◴[17 Jun 25 16:49 UTC] No.44301143[source]▶

  Falcon 9           433k kg  
  Atlas V            547k kg
  Starship         1,200k kg
  Starship Booster 3,600k kg
replies(3): >>44301252 #>>44301330 #>>44301635 #
Certhas ◴[17 Jun 25 17:07 UTC] No.44301330[source]▶
k kg is a funny unit... Much more readable than Mg of course. Tonnes would also work...
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overfeed ◴[17 Jun 25 17:43 UTC] No.44301719[source]▶
Tonne is unfortunately overloaded, the US and the UK have their own versions, but for the rest of the world is on metric, and a tonne is 1000 kg. The Falcon 9 weighing "433 t" reads way more elegantly to me.
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frereubu ◴[17 Jun 25 19:41 UTC] No.44303043[source]▶
My understanding was that "ton" is the US / imperial and "tonne" is the metric one, but I see people using them interchangeably here, so I guess whether that's technically true or not is a bit moot!
replies(1): >>44308981 #
1. schiffern ◴[18 Jun 25 11:39 UTC] No.44308981[source]▶
The spelling "tonne" is only used in countries where there might be ambiguity with the short ton. For the rest of the world, "ton" (abbreviation: t) is the metric ton. Technically it's classified as a "Non-SI unit that is accepted for use with SI," like litres or degrees Celsius.

Source is the official SI brochure: https://www.bipm.org/en/publications/si-brochure/

replies(1): >>44312023 #
2. frereubu ◴[18 Jun 25 18:05 UTC] No.44312023[source]▶
Thanks - TIL.