This is very correct Jim. I have light tan or gold accents on N128LJ.
It is a metallic light gold so I figured it to be a very acceptable
reflective / emitted color. On a sunny day the difference to the touch
is the difference between very warm and neutral to the touch. Even in
the winter months on a sunny day reach out and touch a black car then a
white and you'll know the color to paint your plane. Keep it white and
keep it strong.
Regards,
Jeff R.
On Jul 20, 2007, at 10:55 AM, James wrote:
> 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 fuselage as the engine weightwas sagging the footwell area of
> the plane while it was hot. Needless to say after it was reapairedit
> was repainted white. As Rob H said even yellow can get a bit warmer
> that white, and I've sprayed 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-server@matronics.com] On Behalf Of Rob
>> Housman
>> Sent: Friday, July 20, 2007 11:02 AM
>> To: europa-list@matronics.com
>> Subject: RE: Europa-List: Europa colours
>>
>> Sorry Raimo, but this is dangerous thinking for those of us flying in
>> warmer climes.
>>
>> In my previous post I deliberately avoided getting into too much
>> technical detail, and I used the word reflected where I should have
>> used the technically correct term emitted.
>>
>> First, you seem to misunderstand heat transfer. You are correct that
>> the suns energy is not reflected from a black surface. However, a
>> black body 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 absorbing energy will increase in
>> temperature. Sure, there will be some re-radiation from the dark
>> aircraft structure but that is irrelevant because the
>> epoxy-fiberglass will already have softened.
>>
>> Second, the Lancair aircraft all use a different composite than
>> Europa. Heres how Lancair describes their composites on their web
>> site http://www.lancair.com/Main/legacy.html ---
>>
>> Like every Lancair, the Legacys major airframe is constructed of
>> advanced composite materials. Cured at 270 degrees Fahrenheit under
>> vacuum pressure, these NASA tested, epoxy based composites are among
>> the lightest, strongest, stiffest materials known.
>>
>> The high-temperature, pre-impregnated carbon fiber and/or fiberglass
>> systems combined with Nomex/honeycomb core materials are considered
>> the supreme composite airframe materials of choice worldwide.
>>
>> Note that the Lancairs composites are cured at a much higher
>> temperature than the factory and we cure the Europa structural
>> components. The glass transition temperature is approximately the
>> cure temperature so softening of the composite does not begin until
>> approximately T sub g is reached. For a detailed explanation to T
>> sub g see http://en.wikipedia.org/wiki/Glass_transition_temperature
>> For our purposes we can consider the glass transition temperature the
>> softening temperature, above which the structure loses a significant
>> portion of its strength.
>>
>> Anyone contemplating painting a Europa any color other than white
>> (including 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, Issue 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-server@matronics.com] On Behalf Of Raimo
>> Toivio
>> Sent: Friday, July 20, 2007 1:28 AM
>> To: europa-list@matronics.com
>> Subject: Re: Europa-List: Europa colours
>>
>> Rob,
>>
>> I am not going to encourage anybody to paint their
>> Europas undersides any colour but white. I still well
>> remember Manuals 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 therehas been 10 years awonderfulfull colour mid red
>> Lancair 320
>> and no composite problems at all. Register # is SE-XOP (!).And like
>> we all know in South America (Columbia?) there is flying a totaldeep
>> yellow Europa.
>>
>> I think - with other colour as white - it is better to beeven 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 Europain the hangar and fly only night
>> time if you wanna be absolutely sure"
>>
>> Raimo
>>> ----- Original Message -----
>>> From: Rob Housman
>>> To: europa-list@matronics.com
>>> Sent: Friday, July 20, 2007 2:32 AM
>>> Subject: RE: Europa-List: Europa rules
>>>
>>> Mike
>>>
>>> In re: dark paint
>>>
>>> Dont even think about it. Where we live and fly, on warm days the
>>> heat 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 altitude but you still have to climb away from
>>> the surface. Folks flying closer to the Arctic Circle dont 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-server@matronics.com] On Behalf Of
>>> DuaneFamly@aol.com
>>> Sent: Thursday, July 19, 2007 3:23 PM
>>> To: europa-list@matronics.com
>>> 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
>>>
>>>
>>>
>>> Get a sneak peek of the all-new AOL.com.
>>>
>>>
>>> http://www.matronics.com/Navigator?Europa-List
>>> http://forums.matronics.com
>>>
>>>
>>>
>>> href="http://www.matronics.com/Navigator?Europa-List";>http://
>>> www.matronhref="http://forums.matronics.com";>http://
>>> forums.matronics.com
>>>
>>
>> href="http://www.matronics.com/Navigator?Europa-List";>http://
>> www.matronhref="http://forums.matronics.com";>http://
>> forums.matronics.com
>>
>
>
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