Wikidata:Property proposal/specific impulse by weight

specific impulse by weight

Originally proposed at Wikidata:Property proposal/Natural science

Done: specific impulse by weight (P10107) (Talk and documentation)

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

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)[reply]

Discussion

Notified participants of WikiProject Physics to ignite conversation. CactiStaccingCrane (talk) 01:13, 15 November 2021 (UTC)[reply]

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)[reply]
Support --Tinker Bell ★ ♥ 23:14, 15 November 2021 (UTC)[reply]
Support Toni 001 (talk) 09:06, 16 November 2021 (UTC)[reply]

@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)[reply]