nuckolls.bob(at)aeroelect
Guest
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 Posted: Sun Nov 01, 2020 10:06 am Post subject: DIY LED landing light -- Wing skin as heat sink? |
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At 11:03 AM 11/1/2020, you wrote:
| Quote: | | Quote: | | Trying to wrap my head around the transition from flat contact area under the LED chip to the heat sink plate as it expands out in area. Seems mounting it to an infinite piece of alum foil would not be the same as mounting it to 10x10" 0.063" thick alum plate ... |
But the sheet has thermal resistance too. And
rate of dissipation is a function of temperature
differential. As you move out onto the sheet,
the fastest transfer is right around the base
of the LED; temperatures fall as you move
out hence energy dissipated per unit area
declines.
Intuitively, it makes sense that 'sink'
temperature at the base of the LED will
be much higher than at a remote location.
Are we talking about landing lights? |
Duuh . . . need another cup of coffee . . .
Is this the kind of critter we're talking
about?
https://tinyurl.com/y4tespt7
Do you have a link to share for the
exact device and its spec sheet?
Bob . . .
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