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Moose -SR wing

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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Wayne G. O'Shea
Tell me why it makes more sense to you!? and if you are "adlibbing"
reinforcements into your Elite? :o)

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 3:33 PM
Subject: Moose -SR wing

can someone tell me why they add the reinforcemnt on top of the wing
instead
of in the bottom on the the Moose and 3500 SR To me it would make more
sense if it were the other way.

gilles e717

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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by David Stroud
Probably to resist buckling, Gilles. The top of the wing is in compression and the bottom
in tension in most positive G maneuvers. On my wing stress analysis, it was shown that my
bottom skins could be .013" and the top could be about .021" I think it was. We defaulted
to .020" for the bottom and .025 in the top.

Dave Stroud, Ottawa, Canada
Christavia C-FDWS
Fairchild 51 early construction

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 3:33 PM
Subject: Moose -SR wing

can someone tell me why they add the reinforcemnt on top of the wing instead
of in the bottom on the the Moose and 3500 SR To me it would make more
sense if it were the other way.

gilles e717

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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Gilles St-Pierre
can someone tell me why they add the reinforcemnt on top of the wing instead
of in the bottom on the the Moose and 3500 SR To me it would make more
sense if it were the other way.

gilles e717

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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by BCairboat
The top of the wing is in compressive load. The reinforcements are to
maintain the leading edge cell.
Grant.



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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Wayne G. O'Shea
Thanks Gilles, but what I was asking is why you thought the lower skin
needed reinforcing over the top skin. I was hoping you had some reasoning
for your thoughts! The lower skin is in tension and the top is in
compression (during normal flight loads). The Moose .063 doubler on the top
leading edge area helps to stop the skin from buckling between the rivet
pitch and the large rivets keep it in place to do so. It is also very
important at holding the integrity of the leading edge structure since all
loads off the "floating" main spar need to be transferred to the front
fuselage pickup (unlike a Cessna wing)

Guess I'm just getting a bit concerned after you asked questions about
stringer thickness and skin thickness for the SR/Moose when the best I can
tell you are building an Elite. Maybe it's none of my business to watch out
for you, if you are planning to adlib some design changes, but that's just
the way I am! I have lost too many aviation friends already and don't need
to add to the list. If you are planning any changes to structures I would
suggest that you get a direct okay from Darryl Murphy or at least an
Aeronautical Engineer. Otherwise if you do indeed make structural changes
please at registration of your airplane call it a Gilles Special" and remove
Murphy from the picture. What you MAY have planned could fit into the
"bigger Band-Aid" scenario and when you reinforce one area and make it too
rigid another area (that's likely critical!) is going to crack/buckle or
snap.

I'll leave you alone,
Wayne

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 10:53 PM
Subject: Re: Moose -SR wing

Wayne, you deserve personal answer

when I was car racing (for 20 years) I always had little modifications
that
made the car safe and easy to drive, for that reason I was quite often
leading the pack. At the time fomula 5000 were as fast as formula 1 at
Silverstone and I felt pretty good turning laps 1/10 of a second faster
than
Ronnie (Peterson)
The only thing that I have ever buckled is my safety belt....the upper
part
of the wing has not reached that point yet...!!!!! ;-)

gilles
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Reply-To: <murphy-rebel@dcsol.com>
To: murphy-rebel@dcsol.com
Subject: Re: Moose -SR wing
Date: Sat, 6 Mar 2004 15:35:41 -0500

Tell me why it makes more sense to you!? and if you are "adlibbing"
reinforcements into your Elite? :o)

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 3:33 PM
Subject: Moose -SR wing

can someone tell me why they add the reinforcemnt on top of the wing
instead
of in the bottom on the the Moose and 3500 SR To me it would make
more
sense if it were the other way.

gilles e717

_________________________________________________________________
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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Gilles St-Pierre
To everyone who answered to my inquiries sight gauge moose sr wing
structure

thank you
to me anything that has logic....makes sense!!!!
regards to all of you

gilles
e717

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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Gilles St-Pierre
Wayne, you deserve personal answer

when I was car racing (for 20 years) I always had little modifications that
made the car safe and easy to drive, for that reason I was quite often
leading the pack. At the time fomula 5000 were as fast as formula 1 at
Silverstone and I felt pretty good turning laps 1/10 of a second faster than
Ronnie (Peterson)
The only thing that I have ever buckled is my safety belt....the upper part
of the wing has not reached that point yet...!!!!! ;-)

gilles
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Reply-To: <murphy-rebel@dcsol.com>
To: murphy-rebel@dcsol.com
Subject: Re: Moose -SR wing
Date: Sat, 6 Mar 2004 15:35:41 -0500

Tell me why it makes more sense to you!? and if you are "adlibbing"
reinforcements into your Elite? :o)

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 3:33 PM
Subject: Moose -SR wing

can someone tell me why they add the reinforcemnt on top of the wing
instead
of in the bottom on the the Moose and 3500 SR To me it would make more
sense if it were the other way.

gilles e717

_________________________________________________________________
STOP MORE SPAM with the MSN Premium and get 2 months FREE*
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Moose -SR wing

Posted: Sat Feb 18, 2012 9:05 am
by Gilles St-Pierre
Hi Wayne,

thanks for the infos, it is exactly what had in mind (buckling
possibility)
NO Im not going wild with modifications just the ones proposed by MAM

Regards


gilles
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Reply-To: <murphy-rebel@dcsol.com>
To: murphy-rebel@dcsol.com
Subject: Re: Moose -SR wing
Date: Sat, 6 Mar 2004 23:16:55 -0500

Thanks Gilles, but what I was asking is why you thought the lower skin
needed reinforcing over the top skin. I was hoping you had some reasoning
for your thoughts! The lower skin is in tension and the top is in
compression (during normal flight loads). The Moose .063 doubler on the top
leading edge area helps to stop the skin from buckling between the rivet
pitch and the large rivets keep it in place to do so. It is also very
important at holding the integrity of the leading edge structure since all
loads off the "floating" main spar need to be transferred to the front
fuselage pickup (unlike a Cessna wing)

Guess I'm just getting a bit concerned after you asked questions about
stringer thickness and skin thickness for the SR/Moose when the best I can
tell you are building an Elite. Maybe it's none of my business to watch out
for you, if you are planning to adlib some design changes, but that's just
the way I am! I have lost too many aviation friends already and don't need
to add to the list. If you are planning any changes to structures I would
suggest that you get a direct okay from Darryl Murphy or at least an
Aeronautical Engineer. Otherwise if you do indeed make structural changes
please at registration of your airplane call it a Gilles Special" and
remove
Murphy from the picture. What you MAY have planned could fit into the
"bigger Band-Aid" scenario and when you reinforce one area and make it too
rigid another area (that's likely critical!) is going to crack/buckle or
snap.

I'll leave you alone,
Wayne

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 10:53 PM
Subject: Re: Moose -SR wing

Wayne, you deserve personal answer

when I was car racing (for 20 years) I always had little modifications
that
made the car safe and easy to drive, for that reason I was quite often
leading the pack. At the time fomula 5000 were as fast as formula 1 at
Silverstone and I felt pretty good turning laps 1/10 of a second faster
than
Ronnie (Peterson)
The only thing that I have ever buckled is my safety belt....the upper
part
of the wing has not reached that point yet...!!!!! ;-)

gilles
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Reply-To: <murphy-rebel@dcsol.com>
To: murphy-rebel@dcsol.com
Subject: Re: Moose -SR wing
Date: Sat, 6 Mar 2004 15:35:41 -0500

Tell me why it makes more sense to you!? and if you are "adlibbing"
reinforcements into your Elite? :o)

----- Original Message -----
From: "Gilles St-Pierre" <ranchlaseigneurie@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Saturday, March 06, 2004 3:33 PM
Subject: Moose -SR wing

instead
more
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