Template talk:Launch vehicles

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Rocketry

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Citations and sources are needed

Most of the definitions used in this template appear not to be backed up by verifiable sources. I have started the cleanup by challenging the claim that 20,000 kg is the minimum threshold for "heavy-lift" as I've been unable to locate that in the given source, the HSF 2009 final report. The HSF report seems to provide a (possibly adequate, but a bit unclear) statement that 50,000 kg might be the minimum mass to be considered "super-heavy lift"—but beyond that seems to muddle "heavy lift" and "super-heavy lift" with somewhat different rocket masses in different parts of the report. Not sure how much we can salvage from that source, but other eyes may be able to pull something out that I missed. In any event, we need to avoid trying to put together statements of fact that are not in the original source .

Once we get the "heavy-lift" straightened out, be on the lookout for any verifiable sources we might use to define "small", "medium" and "mid-heavy" lift as well, as I think the problem is just as big on those. But I will not challenge the lack of citations on those three today. N2e (talk) 21:19, 13 February 2011 (UTC)[reply]

Related to this. Why did you put 'not in citation given' tag that you put on the 50000 upper border for heavy row? The source given is for the upper border only, not for the lower (20000). And the template already has a 'citation needed' tag for the non-sourced numbers. Alinor (talk) 12:29, 5 March 2011 (UTC)[reply]