my Europa is half blue and shoes no signs of melting after ten years of ser
vice. She has been parked and flown in hot cuntries.
<Thomas, N81EU>
----Original Message----
From: karelvranken@hotmail.com
Date: Jul 24, 2007 2:38
Subj: Re: Europa-List: Europa colours
Message
v\:* {
BEHAVIOR: url(#default#VML)
}
o\:* {
BEHAVIOR: url(#default#VML)
}
w\:* {
BEHAVIOR: url(#default#VML)
}
shape {
BEHAVIOR: url(#default#VML)
}
@font-face {
font-family: Calibri;
}
@font-face {
font-family: Tahoma;
}
@font-face {
font-family: Consolas;
}
@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.0in 1.0in 1.0in; }
P.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","se
rif"
}
LI.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","se
rif"
}
DIV.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman","se
rif"
}
A:link {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
A:visited {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
PRE {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New"; mso-st
yle-priority: 99; mso-style-link: "HTML Preformatted Char"
}
P.MsoAcetate {
FONT-SIZE: 8pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Tahoma","sans-serif";
mso-style-priority: 99; mso-style-link: "Balloon Text Char"
}
LI.MsoAcetate {
FONT-SIZE: 8pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Tahoma","sans-serif";
mso-style-priority: 99; mso-style-link: "Balloon Text Char"
}
DIV.MsoAcetate {
FONT-SIZE: 8pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Tahoma","sans-serif";
mso-style-priority: 99; mso-style-link: "Balloon Text Char"
}
SPAN.HTMLPreformattedChar {
FONT-FAMILY: Consolas; mso-style-priority: 99; mso-style-link: "HTML Pre
formatted"; mso-style-name: "HTML Preformatted Char"
}
SPAN.BalloonTextChar {
FONT-FAMILY: "Tahoma","sans-serif"; mso-style-priority: 99; mso-style-li
nk: "Balloon Text"; mso-style-name: "Balloon Text Char"
}
SPAN.EmailStyle21 {
FONT-WEIGHT: normal; COLOR: #1f497d; FONT-STYLE: normal; FONT-FAMILY: "A
rial","sans-serif"; mso-style-type: personal
}
SPAN.EmailStyle22 {
FONT-WEIGHT: normal; COLOR: #1f497d; FONT-STYLE: normal; FONT-FAMILY: "A
rial","sans-serif"; mso-style-type: personal-reply
}
MsoChpDefault {
FONT-SIZE: 10pt; mso-style-type: export-only
}
DIV.Section1 {
page: Section1
}
Do you know the gliders color? They know why!
Karel Vranken # 447 F-PKRL
----- Original Message -----
From: James
Sent: Friday, July 20, 2007 5:55 PM
Subject: RE: Europa-List: Europa colours
Anyone remember the factory demonstrator N914XS with the blue belly? After
two or so years in the US sun that plane needed repairs to the front fusel
age as the engine weight was sagging the footwell area of the plane while i
t was hot. Needless to say after it was reapaired it was repainted white.
As Rob H said even yellow can get a bit warmer that white, and I've spraye
d one yellow myself.
Paint em' white, or fly em' at night!
Jim T.
-----Original Message-----
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv
er@matronics.com] On Behalf Of Rob Housman
Sent: Friday, July 20, 2007 11:02 AM
Subject: RE: Europa-List: Europa colours
Sorry Raimo, but this is dangerous thinking for those of us flying in warme
r climes.
In my previous post I deliberately avoided getting into too much technical
detail, and I used the word =C2=93reflected=C2=94 where I should have used
the technically correct term =C2=93emitted.=C2=94
First, you seem to misunderstand heat transfer. You are correct that the s
un=C2=92s energy is not reflected from a black surface. However, a =C2=93b
lack body=C2=94 is not only a perfect absorber but also a perfect emitter,
which is to say it may not be reflecting solar heating but it surely emits
it. Park on a black surface and the solar energy absorbed by that surface
will be re-radiated to the underside of the aircraft, and if that aircraft
is any color but white it will absorb too much energy. Any material absorb
ing energy will increase in temperature. Sure, there will be some re-radia
tion from the dark aircraft structure but that is irrelevant because the ep
oxy-fiberglass will already have softened.
Second, the Lancair aircraft all use a different composite than Europa. He
re=C2=92s how Lancair describes their composites on their web site http://w
ww.lancair.com/Main/legacy.html ---
=C2=93Like every Lancair, the Legacy=C2=92s major airframe is constructed o
f advanced composite materials. Cured at 270 degrees Fahrenheit under vacuu
m pressure, these NASA tested, epoxy based composites are among the lightes
t, strongest, stiffest materials known.
The high-temperature, pre-impregnated carbon fiber and/or fiberglass system
s combined with Nomex/honeycomb core materials are considered the supreme c
omposite airframe materials of choice worldwide.=C2=94
Note that the Lancair=C2=92s composites are cured at a much higher temperat
ure than the factory and we cure the Europa structural components. The =C2
=93glass transition temperature=C2=94 is approximately the cure temperature
so softening of the composite does not begin until approximately T sub g i
s reached. For a detailed explanation to T sub g see http://en.wikipedia.o
rg/wiki/Glass_transition_temperature For our purposes we can consider the
glass transition temperature the softening temperature, above which the str
ucture loses a significant portion of its strength.
Anyone contemplating painting a Europa any color other than white (includin
g yellow) should review the chart in the Builders Manual, Figure 1, Colour-
Temperature Relationship, on page 36-1 of the Europa XS Tri-Gear Manual, Is
sue 1, dated 30 May 1998.
Best regards,
Rob Housman
Irvine, California
Europa XS Tri-Gear
S/N A070
Airframe complete
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv
er@matronics.com] On Behalf Of Raimo Toivio
Sent: Friday, July 20, 2007 1:28 AM
Subject: Re: Europa-List: Europa colours
Rob,
I am not going to encourage anybody to paint their
Europa=C2=B4s undersides any colour but white. I still well
remember Manual=C2=B4s words: all the Europas must be white.
I still have to point out the energy of the sun is NOT
reflecting out of the black asphalt IMHO. That is why
it is hot when a sunny day. It absorbs allmost all the heat
energy and nothing is reflecting out. White surfaces are
cool because they are reflecting out much more.
So it could be more dangerous to keep it on the snow covered
surface while a sunny day (or on white sand or water w Europa floats!).
In Sweden there has been 10 years a wonderful full colour mid red Lancair 3
20
and no composite problems at all. Register # is SE-XOP (!). And like
we all know in South America (Columbia?) there is flying a total deep yello
w Europa.
I think - with other colour as white - it is better to be even more careful
.
Beauty is a good reason for some extra work and some sacrifice.
That is the fact all the women know. That is all.
"Keep your full matt black Europa in the hangar and fly only night time if
you wanna be absolutely sure"
Raimo
----- Original Message -----
From: Rob Housman
Sent: Friday, July 20, 2007 2:32 AM
Subject: RE: Europa-List: Europa rules
Mike =C2'
In re: dark paint
Don=C2=92t even think about it. Where we live and fly, on warm days the he
at reflected off the ramp will be sufficient to soften the epoxy-fiberglass
enough to reduce the strength of the structure. Sure it will be OK at alt
itude but you still have to climb away from the surface. Folks flying clos
er to the Arctic Circle don=C2=92t have to worry about getting the airframe
too hot.
Best regards,
Rob Housman
Irvine, California
Europa XS Tri-Gear
S/N A070
Airframe complete
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv
er@matronics.com] On Behalf Of DuaneFamly@aol.com
Sent: Thursday, July 19, 2007 3:23 PM
Subject: Re: Europa-List: Europa rules
Raimo,
Congratulations to you and your aircraft. I think we can all stand a little
taller and more proud when one of "our" planes tops the list of all in an
entire country.
Do you have any pix of you panel? Is the underside of your aircraft really
painted dark? Black, blue, brown? Any reasoning for this?
Mike Duane A207A
Redding, California
XS Conventional Gear
Jabiru 3300
Sensenich R64Z N
Ground Adjustable Prop
r?Europa-Listhttp://forums.matronics.com href="http://www.matronics.com
/Navigator?Europa-List">http://www.matronhref="http://forums.matronics.co
m">http://forums.matronicscom
href="http://www.matronics.com/Navigator?Europa-List";>http://www.matronhr
ef="http://forums.matronics.com";>http://forums.matronics.com
href="http://www.matronics.com/Navigator?Europa-List";>http://www.matronhr
ef="http://forums.matronics.com";>http://forums.matronics.com
|