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Ceengland
Joined: 11 Oct 2020
Posts: 391
Location: MS
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 Posted: Mon Jan 31, 2022 8:27 am Post subject: Wiring Best Practices? (An anecdotal follow-up) |
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On 1/31/2022 10:05 AM, user9253 wrote:
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> Folks who pass along various and sundry admonitions
> for 'avoiding problems' are offering the ideas
> in good faith. But it can be difficult to separate ol'
> hangar tales and legends from good physics. There
> are plenty of talented engineers and technicians
> who are victims of poor advice propagated in the
> name of safety and good performance.
That makes me think of using red cockpit lights at night.
Every pilot knows that red light does not ruin night vision as much as white light, right?
But is that really true? Are builders installing red lights for naught?
Is this another old wives tale that never dies?
Dim red lights are used in camera film dark rooms. So if red lights are good for film, they must be good for our eyes too, or so the reasoning goes.
What are the physics?
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Joe Gores
Here you go:
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https://www.nps.gov/articles/dark-adaptation-of-the-human-eye-and-the-value-of-red-flashlights.htm
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stuart(at)stuarthutchison
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| Posted: Mon Jan 31, 2022 5:29 pm Post subject: Wiring Best Practices? (An anecdotal follow-up) |
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Keep in mind that any chart marking (like airspace boundaries etc) of the same non-white color as the illumination light source (whether red, blue, green etc) will essentially ‘disappear’ from view due to lack of contrast.
Kind regards, Stu
| Quote: | On 1 Feb 2022, at 11:34, Sebastien <cluros(at)gmail.com> wrote:
 It really depends on what you want to see. If you're dealing with paper checklists and especially paper maps, you're far better off with white since you'll need less light to see clearly. On the other hand if you are using a tablet for mapping and an EFIS for flight and engine instruments, then red light will be better for night vision while identifying switches, finding lost pens, etc.
On our Super Rebel we went with white light under the lip of the dashboard to provide flood lighting for reading maps and checklists and also illuminate panel switches. Testing revealed that even at the dimmest setting there was far more light than desirable. I didn't think it would be a problem since we can just turn the lights off when not needed and turn them on again when flipping switches but then I couldn't find the bloody dimmer switch in the dark. Might place some glow in the dark tape or something around that switch or reduce the number of lights.
Also do yourself a favour and place as bright a light as possible in the baggage compartment for loading and unloading. Don't place it on the battery bus.
On Mon, Jan 31, 2022 at 1:15 PM user9253 <fransew(at)gmail.com (fransew(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com (fransew(at)gmail.com)>
The link in the above post takes one to the thread.
This link below takes you to the specific post about Air Force night lighting research:
https://vansairforce.net/community/showpost.php?p=479679&postcount=23
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505865#505865
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