[caldrail]

Caldrail writes nonsense on aerodynamics.I don't want to sound harsh, but i don't know any other way to define it after reading

No, it isn't nonsense, and you should realise that unless you happen to be somewhat better qualified to write, you can be accused of the same thing.

As for paper aeroplanes, I was rather good at those too. It certainly impressed the examination board adjudicator who was reviewing my physics project and saw my paper rogallo-deltas flying.

No-one got hurt in the demonstration by the way.