ORIGINAL: dick Hanson
You need data to understand that pressure differences are what keeps planes in the air ?
What do YOU think ground effect is ?
and please - no links to archiac archives
I find that type of non responsive "reply", to be of little or no value.
BTW, boats n planes share all the laws of nature
I've made no references to "archiac archives" as you put it, in the last post. You have not responded to the original thread. I repeat: "If my point by point responses to mikenlapaz questions in post #18 are incorrect or misleading please explain my error/s"