OSH ...aluminum needs polishing. HELP!!

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?

"john smith" wrote in message
...
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?

It is absolutely why composite aircraft structures are white. My white
carbon/glass composite glider has a structure thermometer. The POH states
the maximun structure temperature at which a flight can begin.

The next time you have a chance to look at some old cars, compare the white
ones to, say, red ones. White paint seems to last forever. White paint
reduces air conditioning requirements and in turn increases gas milage.

Bill Daniels

http://www.napanet.net/~arbeau/swift/polish.htm

http://www.perfectpolish.com/

And, lots of elbow grease.


--
Rob Ball
B-25 Crewmember
Yankee Warrior


"Montblack" wrote in message
...
http://www.ionaircraft.com/Toucan.jpg
The GREEN (aluminum) parts need polishing.

What's a good 1-2-3-4-5.... step process for polishing up the aluminum
wings - for OSH?

http://www.ionaircraft.com/engineering.html

This will be my first time doing this, so don't skimp on the details
please.

Thanks in advance.


Montblack
Double (TIA) if you swing by ANE and give me a hand. g

http://www.airnav.com/airport/ANE
(ANE) Anoka County-Blaine Airport, MN

http://skyvector.com/#20-117-3-1525-583
16NM (north) @ 12 o'clock on the MSP Sectional

My first warbird ride was a result of lending a hand polishing a
BT-13. If I were still close to ANE I'd be happy to drop by. :-D
Sadly, I'm nowhere near these days. The Blaine AvDays show is a good
time. Wear comfy walking shoes, though...

There's a cream called FLITZ imported from Germany. It's got
potassium in it. Apparently oxygen bonds with potassium better than
it does with aluminum (or nearly any other metal - FLITZ is a all-
purpose polisher). FLITZ steals the oxygen from the AlO and leaves a
black residue on top of the shiny, shiny bare aluminum.

To get the potassium oxide off, you sprinkle baking soda (buy several
BIG boxes at Sam's Club) generously over the surface. Then do the
"wax-on, wax-off" thing with many, many rags. (Baking soda is a very
mild abrasive as well as being absorbent.)

Result: screaming shoulders and bright shiny metal.

On May 8, 3:22 pm, "Montblack" Y4_NOT!...
wrote:
http://www.ionaircraft.com/Toucan.jpg
The GREEN (aluminum) parts need polishing.

What's a good 1-2-3-4-5.... step process for polishing up the aluminum
wings - for OSH?

http://www.ionaircraft.com/engineering.html

This will be my first time doing this, so don't skimp on the details please.

Thanks in advance.

Montblack
Double (TIA) if you swing by ANE and give me a hand. g

http://www.airnav.com/airport/ANE
(ANE) Anoka County-Blaine Airport, MN

http://skyvector.com/#20-117-3-1525-583
16NM (north) @ 12 o'clock on the MSP Sectional

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

"Bill Daniels" bildan@comcast-dot-net wrote in
:


"john smith" wrote in message
...
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?

It is absolutely why composite aircraft structures are white. My
white carbon/glass composite glider has a structure thermometer. The
POH states the maximun structure temperature at which a flight can
begin.

The next time you have a chance to look at some old cars, compare the
white ones to, say, red ones. White paint seems to last forever.
White paint reduces air conditioning requirements and in turn
increases gas milage.

Bill Daniels



But the red cars go faster. At least the police seem to think so.

"Jeff" wrote in message
.. .
"Bill Daniels" bildan@comcast-dot-net wrote in
:
You think this may be why so many airplanes are mostly white?

It is absolutely why composite aircraft structures are white. My
white carbon/glass composite glider has a structure thermometer. The
POH states the maximun structure temperature at which a flight can
begin.

The next time you have a chance to look at some old cars, compare the
white ones to, say, red ones. White paint seems to last forever.
White paint reduces air conditioning requirements and in turn
increases gas milage.

Bill Daniels



But the red cars go faster. At least the police seem to think so.


Oh darn... Does that mean I have to strip my plane and start all over?!?
;-) See: http://www.rtist.nl/Album/Pioniershal%202007/index.html

Rob