Talk:Hot air balloonの英語

I have read this article because I was curious how much hot air one needs to lift things, but even reading quite casually I immediately noticed basic problems with some of the numbers. In its illustration example, the article shows a lift of 200 or 300 kg, yet the "Generating Lift" section suggests 3m³/kg, which, if I were to believe that this is a 2500 m³ baloon (as claimed in another section) would result in about 800+ kg of lift. I tried to locate the error, but I immediately found quite a few other places with incorrect numeric references. Most of the errors I see result from incorrect conversion between the US and Metric units (for example, 2500 m³ does not equal to 100000 ft³), but for example the "Combined Mass" section contains basic arithmetic errors - you will not get the combined weight by adding the individual numbers. The "air in the envelope" item) reports the lift as 261kg (2812-2551) and immediately below it as 311kg (3538-3227). All of these numbers seem wrong (and somewhat random) if I apply simple arithmetic to the values mentioned in the article prior to this section. I am not sure how this many error could have been accumulated, but seeing so many I would be suspect of any numeric reference within the article. I recommend a thorough review of all of the examples for at least the basic arithmetic, and self consistency within the article. As far as the latter is concerned, if 1.2kg/m³ density is suggested, regardless of the fact that the 1.2 figure may have many physical conditions attached, an illustrative example calling for a 2500 m³ baloon must show the corresponding weight as 3000 kg (1.2 * 2500). 209.31.143.66 (talk) 01:21, 14 June 2008 (UTC)