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Re: Europa-List: Re: wing lift/drag pins

Subject: Re: Europa-List: Re: wing lift/drag pins
From: Roger Sheridan <rogersheridan@gmail.com>
Date: Mon, 1 Jul 2013 09:54:17
Surely in gliding flight the wings must be pulling the fuselage 
forwards..........otherwise you would stop!


On 1 Jul 2013, at 08:55, houlihan <houlihan@blueyonder.co.uk> wrote:

> Hi Alan.
> 
> A few comments, 
> 1, wings that have been demonstrated to fly OK for many thousands of 
hours do not usualy fail in normal flight , it should only happen in 
extreme circumstances so forget about your 1 "G" straight and level 
situation.
> 
> 2, your comments about the WW2 bomber do not demonstrate failure due 
to aerodynamic loading., During the bomb release phase of flight it 
would be in 1"G" straight and level flight. the failure occurred because 
the fuselage holding the wings apart was removed allowing them to react 
as you describe.
> 
> 3, there are lots of things in life I do not understand like high 
energy physics and brain surgery but when people who know about these 
things try and explain to me I try to listen and learn. you seem to have 
rejected all the explanations put forward by knowledgeable contributors 
to this forum. So when you find the answer from other sources  please 
let us know the outcome so that we can all learn something.
> 
> 4, If a Cessna 150 was over stressed in a high "G" maneuver to the 
extent that the mainplanes failed they would also fold forwards and 
upwards probably outboard of the struts..
> 
> Tim
> 
> 
> On 1 July 2013 01:01, Alan Carter <alancarteresq@onetel.net> wrote:
<alancarteresq@onetel.net>
> 
> Hi Graham.
> I understand a little in what you a saying.
> In the tail slip the wing is falling backwards to normal  flight 
condition.
> The pin would stop the wing from pulling out.
> 
> But in normal level flight i see this bar in compression.
> At this moment in time, i just can not see how you would get a forward 
force.
> 
> I find Europa.s notes mentioning words like "tie bar",
> but i find many of Europa,s notes not to clear as to exactly what the 
situation is.
> 
> I think this bar is say, in compression 90% of the time and 10% in 
tension some of the time, hence the pin.
> But what the hell do i know, but im not giving up yet.
> 
> Need a little micro transducer between the front wing root to see 
which the bios is.
> 
> Best Regards.
> Alan
> 
> 
> 
> 
> Read this topic online here:
> 
> http://forums.matronics.com/viewtopic.php?p=403665#403665
> 
> 
> 
> 
> 
> 
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