Come see us at Oshkosh

Dean,

At 130F (55C) the heatsink on our unit will be at 90C (194F) which
will not damage the components.

Doh, I read your "150C" as "150F". Thanks for clarifying.

Hilton

wrote:

If the heat sink gets to about 95C,
the unit will self-protect by automatically entering the flash mode

THAT would be fun on short final to a dark runway!

--
Dan
T-182T at BFM

Dan,

The air temperature inside a wing at night in flight will never get
anywhere close to 140F, so it won't happen on short final at night...
plus, it would take at least 45 minutes to an hour even in a 140F
ambient for the unit to get hot enough to self-protect.

Just kidding you, Dean. You have an interesting product; sorry I missed
seeing it at OSH.

Good luck with it.

--
Dan
T-182T at BFM

"Dan Luke" wrote

THAT would be fun on short final to a dark runway!

Just kidding you, Dean. You have an interesting product; sorry I missed
seeing it at OSH.

Nah, it wouldn't be all that bad. It would be, "now you see it - now you
don't! "

g
--
Jim in NC

On Aug 3, 8:22 am, "Dan Luke" wrote:
wrote:
If the heat sink gets to about 95C,
the unit will self-protect by automatically entering the flash mode

THAT would be fun on short final to a dark runway!

--
Dan
T-182T at BFM

Dan,

The air temperature inside a wing at night in flight will never get
anywhere close to 140F, so it won't happen on short final at night...
plus, it would take at least 45 minutes to an hour even in a 140F
ambient for the unit to get hot enough to self-protect.

Just kidding you, Dean. You have an interesting product; sorry I missed
seeing it at OSH.

Good luck with it.

--
Dan
T-182T at BFM- Hide quoted text -

- Show quoted text -

Hi Dan,

Thanks, I wasn't sure... posts don't carry tone of voice so subtle
humor is often lost in translation! Hence the many flame wars that go
on in usenet space!

Dean

On Aug 3, 8:58 am, "Morgans" wrote:
"Dan Luke" wrote

THAT would be fun on short final to a dark runway!
Just kidding you, Dean. You have an interesting product; sorry I missed
seeing it at OSH.

Nah, it wouldn't be all that bad. It would be, "now you see it - now you
don't! "

g
--
Jim in NC

And don't forget the old joke... if landing at night with an engine
failure, wait until you get close to the ground before turning on your
landing light. If you don't like what you see, turn it back off...

Dean

deanwil wrote

And don't forget the old joke... if landing at night with an engine
failure, wait until you get close to the ground before turning on your
landing light. If you don't like what you see, turn it back off...

Yep! An oldie but a goodie!

I'm a big fan of LED's. I have a MagLight 3D cell 3 watt, and a MiniMag 2AA
3 watt, and various other hat bill lights, strap on forehead lights, glasses
lights, ....

I guess I have to confess that I'm a flashlight addict! g

One thing that I have really noticed, is that the color and intensity of
(especially the 3 watt) LED's make it easy to see details of items at
distances that would be impossible with other flashlights, and that includes
the krypton (sp?) bulbs.

I would imagine that holds true with your lights, also.

At what distance are you able to pick out the numbers on a dark night, and
how does that compare to a quartz-halogen landing light of a average
wattage, like say on a C-172? Is it a noticeable difference?
--
Jim in NC

On Aug 2, 1:41 pm, wrote:
On Aug 1, 2:03 pm, Andrew Sarangan wrote:

On Aug 1, 3:27 pm, "Hilton" wrote:

I have tinkered with high brightness LEDs for some time. My conclusion
was LEDs significantly outperform other sources only in situations
where you need single color, such as nav lights, red cockpit lights,
traffic lights etc... For white light applications their performance
is less impressive. That is reasonable because LEDs inherently produce
single color photons, while incandescent sources produce a broadband
of photons. You lose efficiency converting a broad band to a single
color, and you also lose efficiency converting a single color to a
broad band.

This is not true anymore... the LEDs we are using are now available in
efficiencies as high as 100lumens/Watt. That is better than a compact
fluorescent light bulb. You can not look directly at the LEDs we are
using when they are on. If you do, you will see spots for quite a
while afterwards.

Which LED's are they? I worked with the Luxeon stars to design by
wing tip lights, but that was over a year ago.

On Thu, 02 Aug 2007 10:41:17 -0700, wrote in
. com:

the LEDs we are using are now available in
efficiencies as high as 100lumens/Watt.

Would that be these?:

http://www.sparkfun.com/commerce/pro...oducts_id=8202
Luxeon V LED - White 5 Watt

Would that be these?:

http://www.sparkfun.com/commerce/pro...oducts_id=8202
Luxeon V LED - White 5 Watt

Sorry guys, but we aren't willing to share our bill of materials with
anyone not under NDA. I do understand and appreciate your desire to
know which ones they are.

Dean W.
AeroLEDs LLC
www.aeroleds.com

Due to the positive response that our product has received, we were
able to improve our manufacturing costs (spread out our NRE over more
units) and lower our selling price.

We are now offering our AeroSUN LED landing/recognition lights for
$350 each or $650 for a pair. Customers who paid the previous price
are being credited the difference.

The warranty is 10 years from date of purchase.

Dean W.
AeroLEDs LLC
www.aeroleds.com