Today's Message Index:
----------------------
1. 08:08 AM - McDonnell Douglas (Boeing) F-15E electrical system similarities (Jordan Grant)
2. 08:17 AM - Battery Size (Terry Lamp)
3. 09:36 AM - Re: AOA Indicator (Sigma Eta Aero)
4. 11:01 AM - Re: AOA Indicator (Eric M. Jones)
5. 11:10 AM - Battery Size and Repost "Start Me Up" (Eric M. Jones)
6. 11:44 AM - Alternator Output Protection (Phil Collins)
7. 02:41 PM - AVG (Rob W M Shipley)
8. 03:27 PM - Re: Alternator Output Protection (Robert L. Nuckolls, III)
9. 04:34 PM - Re: LED position lights (Michael Crowder)
10. 04:44 PM - Re: Re: AOA Indicator (Sigma Eta Aero)
Message 1
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| Subject: | McDonnell Douglas (Boeing) F-15E electrical system |
similarities
--> AeroElectric-List message posted by: "Jordan Grant" <jgrant@sw.rr.com>
Bob:
I am currently going through F-15E ground school here in Seymour Johnson
AFB, NC. I know some out there think that your approach to aircraft
electrical systems is "nonstandard", but I recognized some of the same
concepts in the Strike Eagle's electrical system. The Eagle also has an
"essential" bus (powered by an emergency generator - the Eagle does not
carry a battery!), it uses fusible links at strategic places, and there are
many circuit breakers located under the jet where "creative" aircrew cannot
get to them in flight. When I learned that stuff, I thought of 'Lectric Bob
and how far ahead of the curve the Aeroelectric Connection is!
Have a great weekend,
Jordan Grant
DO NOT ARCHIVE
Message 2
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09/19/2003 11:19:44 AM
--> AeroElectric-List message posted by: "Terry Lamp" <tlamp@genesishcs.org>
What mah 12 v battery would I need to run just a iPaq PDA and it's
attatched GPS receiver for say 5 hours.
I don't know current draw figures.
Anybody else figured all this out yet?
Size and weight is a major concern.
Thanks,
Terry
Long EZ
Ohio
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Message 3
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| Subject: | Re: AOA Indicator |
--> AeroElectric-List message posted by: Sigma Eta Aero <sigmatero@yahoo.com>
Ok, maybe I'm being too simple but isn't there a simple non-detented rotary switch
(or similar) that has like 10 positions on it and that could just be wired
directly to a 10 LED bargraph so that you have a direct readout of the vane position
(you may have to do a gear reduction on the switch)? Basically just a
panel mounted direct indication of what the vane is doing? You could then wire
a warning horn/light to one or more of these LEDs so that whenever it (or the
light above it) lit up the warning would come on. I would be inclined to have
one for best glide (steady green) and then a steady amber for approaching
stall (maybe a beeping horn) and then a flashing red and a solid horn for stall.
These three lights would be mounted up high and to the left and the small
row of 10 LEDs would be mounted somewhere else and used for reference only.
Joa
---------------------------------
Message 4
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| Subject: | Re: AOA Indicator |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
--> AeroElectric-List message posted by: Sigma Eta Aero
<sigmatero@yahoo.com>
>Ok, maybe I'm being too simple but isn't there a simple non-detented rotary
switch
>(or similar) that has like 10 positions on it and that could just be wired
>directly to a 10 LED bargraph so that you have a direct readout of the vane
position
A low turning force potentiometer like Clarostat Model HRS100 Hall Effect
Position Sensor.
hooked up to a MAC indicator or roll you own with an LM3914 and a few leds.
>or approaching stall (maybe a beeping horn)
Or maybe a stick shaker available from MPJA (Okay a pager motor) for .99.
>and then a flashing red and a solid horn for stall.
I say --Go for it!
Eric
Message 5
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| Subject: | Battery Size and Repost "Start Me Up" |
--> AeroElectric-List message posted by: "Eric M. Jones" <emjones@charter.net>
I apologize for reposting this, but I think it is important. My notion is
that this technology would be extremely useful as an emergency power supply.
The Polapulse battery is truly remarkable--one of the last Polaroid
miracles. They can sit around for over 5 years and still kick it.----
While grabbing some epoxy at the local auto store I ran across "Start Me
Up". This is an little
device the size of a couple packs of playing cards with a cigarette lighter
connector. With a dead battery, one plugs this into the connector and five
minutes later--vroom. (One presumes). See one here--www.startmeup.com and
many other places if you do a google search.
The device is 36 volts and one-time use and weighs very little. It costs
about $25 so they wind up on the discount racks after a while for $10.
Lifetime is better than five years so this is a real deal.
How this thing works: The insides contain a 6-stack of 6V Polapulse
batteries, and (probably) no current limiting. With a dead battery, this
thing will bring up the charge level to the point where the engine will
start in a few minutes. Then the battery pack is dead.
See: www.polaroid-oem.com/pdf/batteries.pdf
This might be very nice as an emergency backup device. I would certainly
consider it.
Regards,
Eric M. Jones
Message 6
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| Subject: | Alternator Output Protection |
--> AeroElectric-List message posted by: Phil Collins <philc1@ix.netcom.com>
I have a Long-ez project with an IO-360 engine and I am installing an electrical
system I sketched out a few years ago with help from the 'connection. I have
a Sky-tec Starter with an integrated solenoid. The way I have it drawn I have
the battery relay connected to the starter solenoid with a #2 wire and the
alternator output (B+?) connected to the starter solenoid with a #4 wire and an
inline fuse or breaker. I understand that there has been some less than positive
field experience with setups like this due to difficulty finding a fuse
or breaker that held up well in the harsh heat/vibration environment on the aft
end of a pusher engine.
My next question is what about a fusible link? Could I use a #6 or #8 section
of fusible link to bridge the 9-inch space between the starter solenoid and the
alternator. Would that create its own problem in a failure mode by allowing
the remaining fragment of fusible link still connected to the starter (hence
directly to batt+) to short directly to ground?
Any experience the group can share would be appreciated.
Thanks,
Phil Collins
Message 7
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--> AeroElectric-List message posted by: "Rob W M Shipley" <rob@robsglass.com>
Subject: Re: AeroElectric-List: AVG
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 08:43 AM 9/18/2003 -0700, you wrote:
>--> AeroElectric-List message posted by: "Rob W M Shipley" <rob@robsglass.com>
>
>Bob's reply:
> We've used AVG here for years with excellent service. I
> checked the orders server this morning and it had automatically
> downloaded the latest update for the free version but the
> computer on my desk had not. I did a manual download but
> it was exceedingly slow . . . they usually take about 10
> seconds, this one took several minutes. I suspect there
> is a bottleneck in their connection somewhere.
> If you're trying to install the free version, try
> 6-XFREE-522613-AVG for a serial number.
> Bob . . .
>
>You've done it again, Bob! I'm truly amazed at your facility to answer
>even somewhat off target questions with detailed and accurate
>information. The password worked and I was able to complete the
>install. The virus database update was a different matter. This showed
>the update screen and then stalled. I suspect security issues at my ISP
>so I'll call them next.
>Many thanks indeed to Bob and George Bass for their help.
that seems unlikely. like all servers that offer popular
free services, it's probable that they (or the 'net between
you and the server) is really busy certain times of day.
I use the auto-update feature of AVG to get the updates
at 3 a.m. local. My computers run 24 hours a day so this
works really nice and keeps us up to date with a minimum
of hassles.
I just tried a download from their site and it was still
very slow. I think the problem resides someplace outside
your system or isp.
Bob . . .
Once again you're correct Bob. Shortly after sending the email yesterday I tried
an update again, this time successfully. It seems they may have resolved their
problems. Hope so.
Thanks again for the help.
Rob
Rob W M Shipley
RV9A N919RV (res) Fuselage
Message 8
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| Subject: | Re: Alternator Output Protection |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <bob.nuckolls@cox.net>
At 01:43 PM 9/19/2003 -0500, you wrote:
>--> AeroElectric-List message posted by: Phil Collins <philc1@ix.netcom.com>
>
>
>I have a Long-ez project with an IO-360 engine and I am installing an
>electrical system I sketched out a few years ago with help from the
>'connection. I have a Sky-tec Starter with an integrated solenoid. The
>way I have it drawn I have the battery relay connected to the starter
>solenoid with a #2 wire and the alternator output (B+?) connected to the
>starter solenoid with a #4 wire and an inline fuse or breaker. I
>understand that there has been some less than positive field experience
>with setups like this due to difficulty finding a fuse or breaker that
>held up well in the harsh heat/vibration environment on the aft end of a
>pusher engine.
The ANL series current limiters will do fine
>My next question is what about a fusible link? Could I use a #6 or #8
>section of fusible link to bridge the 9-inch space between the starter
>solenoid and the alternator. Would that create its own problem in a
>failure mode by allowing the remaining fragment of fusible link still
>connected to the starter (hence directly to batt+) to short directly to ground?
This is pretty large for a "fusible link" . . . I'm reluctant
to recommend this on an airplane. If it were my airplane,
I'd use the ANL . . .
Bob . . .
Message 9
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| Subject: | re: LED position lights |
--> AeroElectric-List message posted by: Michael Crowder <mhcrowder@netzero.net>
Here is more information...
http://www.whelen.com/pdfs/11283.pdf
http://www.whelen.com/pdfs/install/13777.pdf
just like the tail light, they are 28V units.
--Michael
Sonex #293
--> AeroElectric-List message posted by: "Bob Kuc"
>> While sitting at the local FSDO, and looking through a few mags, there was
>> an advertisement for Whelen. Apparently they now sell position and
>> anti-collision LED lights that have been TSO'd.
>>
>> Bob
The best thing to hit the internet in years - NetZero HiSpeed!
Surf the web up to FIVE TIMES FASTER!
Only $14.95/ month -visit www.netzero.com to sign up today!
Message 10
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| Subject: | Re: AOA Indicator |
--> AeroElectric-List message posted by: Sigma Eta Aero <sigmatero@yahoo.com>
This little bugger looks about perfect for the job and seems to be priced pretty
well. Since output is a function of input wouldn't you have to supply a regulated
and constant 5.0VDC to it and if so what is the easiest way to accomplish
this?
Joa
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A low turning force potentiometer like Clarostat Model HRS100 Hall Effect
Position Sensor.
hooked up to a MAC indicator or roll you own with an LM3914 and a few leds.
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