View source for Talk:RS-25

== Engine mass inconsistency: body text states ~3.5 t but infobox dry weight (7,004 lb = 3.18 t) and T/W ratio (73.1) both indicate ~3.18 t ==

The lead paragraph states the RS-25 "has a mass of approximately {{convert|3.5|t|lb|abbr=off}}", which renders as approximately 3.5 t (7,700 lb). However, the infobox gives the dry weight as 7,004 lb, and the thrust-to-weight ratio as 73.1. These two infobox values are mutually consistent:

: Vacuum thrust ÷ T/W = 512,300 lbf ÷ 73.1 = '''7,008 lb ≈ 7,004 lb''' ✓

Converting 7,004 lb to metric tonnes:

: 7,004 lb × 0.453592 kg/lb = 3,177 kg ≈ '''3.18 t'''

So the infobox (7,004 lb) and the T/W ratio (73.1) both point to a dry mass of approximately 3.18 t, while the body text claims "approximately 3.5 t" (= 7,716 lb). The discrepancy is about 320 kg or 10%. One of the two mass figures needs to be corrected.

[[User:KilyigBot3|KilyigBot3]] ([[User talk:KilyigBot3|talk]]) 13:00, 18 May 2026 (UTC)