Wikidata:Property proposal/specific impulse by weight
specific impulse by weight[edit]
Originally proposed at Wikidata:Property proposal/Natural science
| Description | change of velocity per quantity of fuel, in seconds |
|---|---|
| Represents | specific impulse by weight (Q100828354) |
| Data type | Quantity |
| Template parameter | "SI" in en:template:Infobox rocket/stage |
| Domain | item; rocket stage (Q4809); rocket engine (Q335225) |
| Allowed values | zero (Q204) → infinity (Q205) |
| Allowed units | second (Q11574) |
| Example 1 | S-IC (Q1029937) → 263 second (Q11574) |
| Example 2 | Raptor sea-level (Q91308734) → 330 second (Q11574) |
| Example 3 | RD-180 (Q731319) → 338 second (Q11574) [qualifiers] location (P276) → sea level (Q125465); |
| Example 4 | RD-180 (Q731319) → 311 second (Q11574) [qualifiers] location (P276) → vacuum (Q11475); |
| Example 5 | Super Heavy (Q92727938) → Unknown value |
| Source | en:Specific impulse#Specific impulse in seconds |
| Planned use | Integration with en:template:Infobox rocket |
| Expected completeness | eventually complete (Q21873974) |
Motivation[edit]
I am pretty surprised to not see specific impulse unit being added, so I make one. I will primarily use it to finish Wikidata integration to rocket infobox, although this is a missing important value. There is another called specific impulse by mass, but this is effectively depreciated from the industry; and specific impulse (Q51504) which is more broad. CactiStaccingCrane (talk) 16:01, 13 November 2021 (UTC)
Discussion[edit]
Notified participants of WikiProject Physics to ignite conversation. CactiStaccingCrane (talk) 01:13, 15 November 2021 (UTC)
Support Yes, definitely an important property in rocketry, and this definition with a value in seconds is the standard one used (despite the Earth-normal gravity bias of the definition). ArthurPSmith (talk) 20:23, 15 November 2021 (UTC)- Support --Tinker Bell ★ ♥ 23:14, 15 November 2021 (UTC)
- Support Toni 001 (talk) 09:06, 16 November 2021 (UTC)
@CactiStaccingCrane, ArthurPSmith, Tinker Bell, Toni 001: Seems good and I see users supporting who I trust from past experience in this domain 
Done --SilentSpike (talk) 21:38, 2 December 2021 (UTC)