Talk:Rocket launch

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[edit] Steam

y is steam produced wen rocket launches?? —Preceding unsigned comment added by 59.144.105.149 (talk • contribs) 16:28, 28 November 2006

Several reasons.

1. Water is sprayed under the engines to reduce noise. This vapourises.
2. Many rockets use hydrogen as a fuel. This reacts with oxygen to produce water.

Hope this helps --GW_Simulations_{User Page | Talk} 19:50, 30 November 2006 (UTC)

[edit] Merge section into launch vehicle article

Would it make sense to merge most of the material currently in the launch vehicle section of this article into the launch vehicle article? We could use the {{Main | launch vehicle}} markup.... Sdsds 15:19, 29 March 2007 (UTC)

When launching a spacecraft to orbit, a "dogleg" is a guided, powered turn during ascent phase that causes a rocket's flight path to deviate from a "straight" path. A dogleg is necessary if the desired launch azimuth, to reach a desired orbital inclination, would take the ground track over land (or over a populated area, e.g. Russia usually does launch over land, but over unpopulated areas). Doglegs are undesirable due to extra onboard fuel required, causing heavier load, and a reduction of vehicle performance.

[edit] Ascent

The article doesn't say how much of the ascent of a rocket is generally considered to be part of the launch. Is there any concensus on that? Logically it might seem like the "launch" includes the part of the ascent that gets the vehicle away from the pad. Would it include the entire first stage burn? Second stage burn? Also, what about the other end of the time frame? Does launch start at T-0 in the count down, or somewhere before? (sdsds - talk) 04:01, 22 July 2007 (UTC)