OSH ...aluminum needs polishing. HELP!!

[off-topic]

What are the wings bonded with? Will they safely withstand the
internal temperatures they'll see in bare aluminum finish?

Thanks, Bob K.

("Bob Kuykendall" wrote)
What are the wings bonded with? Will they safely withstand the internal
temperatures they'll see in bare aluminum finish?


Don't have the details for you. I'll ask, and report back.

I'm heading over to ION World Headquarters now (which Steve calls the left
side of Al's hangar).


Montblack
I also need to head over to the airport and re-hang our "Blaine Aviation
Weekend (May 19 - 20)" sign. It didn't like the 50+mph winds that blew
through here the other evening.

I guess my memory of thermodynamics isn't what it never was. Isn't a
perfectly reflecting surface much better than one that doesn't reflect the
energy? Like why snow doesn't melt very fast except when the bare ground
shows through and then all of a sudden the snow is gone.

Something about albedo, as I vaguely remember.

Jim



"Bob Kuykendall" wrote in message
ups.com...
[off-topic]

What are the wings bonded with? Will they safely withstand the
internal temperatures they'll see in bare aluminum finish?

Thanks, Bob K.

Earlier, Jim Weir wrote:

...Isn't a perfectly reflecting surface much better than
one that doesn't reflect the energy?...

In theory, yes.

In practice bare aluminum, even highly polished bare aluminum, absorbs
enough energy in direct sunlight to threaten some materials used in
bonded aluminum.

Thanks, Bob K.

"Bob Kuykendall" wrote in message
oups.com...
Earlier, Jim Weir wrote:

...Isn't a perfectly reflecting surface much better than
one that doesn't reflect the energy?...

In theory, yes.

In practice bare aluminum, even highly polished bare aluminum, absorbs
enough energy in direct sunlight to threaten some materials used in
bonded aluminum.

Thanks, Bob K.

Despite the obvious glare of visible light, polished aluminum absorbs far
mor solar energy than white.

Peter

"Peter Dohm" wrote in message
. ..

"Bob Kuykendall" wrote in message
oups.com...
Earlier, Jim Weir wrote:

...Isn't a perfectly reflecting surface much better than
one that doesn't reflect the energy?...

In theory, yes.

In practice bare aluminum, even highly polished bare aluminum, absorbs
enough energy in direct sunlight to threaten some materials used in
bonded aluminum.

Thanks, Bob K.

Despite the obvious glare of visible light, polished aluminum absorbs far
mor solar energy than white.


This was discussed a while back. For details see
http://www.soaridaho.com/Schreder/Co...olor_Temp.html

Wayne
HP-14 "6F"
http://www.soaridaho.com/Schreder

"Wayne Paul" wrote in message
...

"Peter Dohm" wrote in message
. ..

"Bob Kuykendall" wrote in message
oups.com...
Earlier, Jim Weir wrote:

...Isn't a perfectly reflecting surface much better than
one that doesn't reflect the energy?...

In theory, yes.

In practice bare aluminum, even highly polished bare aluminum, absorbs
enough energy in direct sunlight to threaten some materials used in
bonded aluminum.

Thanks, Bob K.

Despite the obvious glare of visible light, polished aluminum absorbs far
mor solar energy than white.


This was discussed a while back. For details see
http://www.soaridaho.com/Schreder/Co...olor_Temp.html

Wayne
HP-14 "6F"
http://www.soaridaho.com/Schreder

The following is from Bellcore. The first number is the solar energy
absorbed the second is the low temperature heat radiation. As you can see,
polished alumunum absorbs only slightly more than white paint but radiates
only 6% as much heat. In other words, although it absorbs little, it
radiates much less so it heats up more than any painted surface.

Polished Aluminum .15 .06

White .14 .97

Yellow .30 .95

Cream .25 .95

Light Grey, Green Blue .50 .87

Med. Grey, Green Blue .75 .95

Dark Grey, Green Blue .95 .95

Black .97 .96



Bill Daniels

Bill Daniels wrote:
The following is from Bellcore. The first number is the solar energy
absorbed the second is the low temperature heat radiation. As you can see,
polished alumunum absorbs only slightly more than white paint but radiates
only 6% as much heat. In other words, although it absorbs little, it
radiates much less so it heats up more than any painted surface.

Polished Aluminum .15 .06

White .14 .97

Yellow .30 .95

Cream .25 .95

Light Grey, Green Blue .50 .87

Med. Grey, Green Blue .75 .95

Dark Grey, Green Blue .95 .95

Black .97 .96

Hmm?
You think this may be why so many airplanes are mostly white?

On Tue, 8 May 2007 18:53:17 -0600, "Bill Daniels"
bildan@comcast-dot-net wrote:


The following is from Bellcore. The first number is the solar energy
absorbed the second is the low temperature heat radiation.

Great post, thanks for the data !

-Nathan