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10-29-2013, 09:32 PM
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Join Date: Feb 2012
Location: Leesburg, VA
Posts: 550
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Should we really trust aluminum?
http://i.huffpost.com/gen/1423709/th...ACRO-900.jpg?1
This is a scanning electron microscope view of a piece of polished aluminum.
Makes me want to go right out and pull 6 Gs.
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10-29-2013, 10:35 PM
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Join Date: Nov 2010
Location: lake charles, La.
Posts: 699
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6g would not bother me in my rv8, just gotta get it flying first.
Bird
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Bird
rv8 entire airframe at airport now, painting done, intersection and gear upper and lower fairings done, maybe order engine around first of year or before the next rate increase.
"to fly is a privilege that I am so thankful to God for"
http://www.mykitlog.com/tcb328/
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10-30-2013, 08:35 AM
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Join Date: Oct 2007
Location: Macon, GA
Posts: 498
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Quote:
Originally Posted by SMRacer
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Find an image of the shot-peened aluminum wings or spars from an airliner.....
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Macon, GA (KMCN)
RV-7, Niner Fife Victor
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10-30-2013, 08:56 AM
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Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,210
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I trust it
I have worked exclusively with aircraft aluminums and other materials for 33 years in the heavy aircraft overhaul industry as an airframe SME and can tell you from my experience, the quality control of such alloys is very high, and imperfections dont show often. Usually, defects occur after breach in coatings, or improper machining, ect. The important factors for the experimental aircraft builder are to fully understand the surface conditions of finished edges, corner radii , hole quality,bend radius, and finish application...and even then, its hard to really screw up an RV if the plans are followed. Just my opinion, but I have seen almost every imaginable scenaro that can happen with aluminum, and I will always prefer it over any other material.
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Bill E.
RV-4/N76WE
8A7 / Advance NC
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10-30-2013, 09:36 AM
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Join Date: Feb 2012
Location: Leesburg, VA
Posts: 550
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Guess I should have used a "smiley face".
Those who don't know me might not have realized that starting this thread was purely facetious.
I stumbled across the article showing macro and micro views of many items. One was the polished aluminum. Of course I trust my life to aluminum on almost a daily basis, and certainly will continue to do so. But I couldn't help but marvel at the imperfections of the metal at the micro level.
So the moral of this thread is: The more closely you look at things, generally the more wondrous they become.
Enjoy your flight today.
Jim
N444JT
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10-30-2013, 09:44 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,690
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Magnify to the Planck length and the darned thing could vanish before your very eyes! 
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Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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10-30-2013, 10:19 AM
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Join Date: Nov 2008
Location: Burleson, TX
Posts: 117
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Thank goodness for multiple load paths in design and the 1.5 safety margin.
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Ken
?Aviation is not so much a profession as it is a disease.? Anonymous
Building an RV-7
Empennage complete, fuselage 75%, wings 75%.
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10-30-2013, 12:14 PM
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Join Date: Sep 2009
Location: Rochester, MN
Posts: 710
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Vans aluminum doesn't have all those little cracks in it.  |
10-30-2013, 12:17 PM
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Join Date: May 2006
Location: Houston
Posts: 2,010
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Clearly, improper primer or wrong color Sharpie used on that piece.
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10-30-2013, 12:21 PM
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Join Date: Sep 2009
Location: Rochester, MN
Posts: 710
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You also don't see aluminum like that on taildraggers.
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