PPRuNe Forums - View Single Post - Theory on lift
Thread: Theory on lift
View Single Post
Old 30th Nov 2012, 16:58
  #289 (permalink)  
Lyman
 
Join Date: Aug 2011
Location: Grassy Valley
Posts: 2,074
Likes: 0
Received 0 Likes on 0 Posts
I don't think it is a wind up. There is a fundamental communication problem in this discussion that may never go away.

Mass is perturbed, redirected, and the perturbing mass changes direction and velocity. The Mass also loses energy. Having a constant source of 'new' energy (thrust) it creates a dynamic system that becomes mysterious only in the perception of those who then discuss it.

I started fifty years ago, and the frustration was mine, due to an intuitive rejection of the proposition, specifically equal time transit, and camber.

As a dynamic system, an aircraft in unaccelerated flight is Newtonic. I do not disdain the effort to describe it however one chooses to. My beef is with the (apparent) effort to make the endeavour overly dramatic, overparsed, and obtuse. I think the problem arises because 'air' resists a simple 1,2,3 explanation.

What is 'wrong' with an attempt to describe ground effect as a result of mass being partially supported by a 'compressed' cushion?

All respect...
Lyman is offline