Today's Message Index:
----------------------
1. 01:17 AM - Re: Last design task for Raytheon (Bob Verwey)
2. 03:13 AM - Re: Always Hot Power to Injectors and Ignition Coils (Krea Ellis)
3. 06:11 AM - Re: Always hot power for fuel injectors and ignition coils (user9253)
4. 06:38 AM - Re: Re: Always hot power for fuel injectors and ignition coils (Robert Reed)
5. 07:03 AM - Re: Last design task for Raytheon (Ronald Cox)
6. 08:06 AM - Re: Re: Always hot power for fuel injectors and ignition coils (Foghorn Inc)
Message 1
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| Subject: | Re: Last design task for Raytheon |
...and the Iranians want to mess with you guys!! lol
Best...
Bob Verwey
082 331 2727
On Mon, 17 Feb 2020 at 06:30, Art Zemon <art@zemon.name> wrote:
> That's awesome, Bob. Real engineering!
>
> -- Art Z.
>
>
> On Sun, Feb 16, 2020 at 9:02 PM Robert L. Nuckolls, III <
> nuckolls.bob@aeroelectric.com> wrote:
>
>> nuckolls.bob@aeroelectric.com>
>>
>> Setting up new computer. While cleaning off some old
>> files on an archive-drive, I stumbled across a video
>> of first-flight on the last vehicle design program
>> I worked for RAC.
>>
>> This missile is intended to fly very low over the
>> water . . . perhaps 30' off the surface . . . at
>> very high speeds. Something on the order of M4.
>> Powered by air-breathing ram-jets, it has to be flying
>> at better than M2.0 before the engines will light off.
>> If memory serves, it achieves engine start velocity in just
>> a few seconds with acceleration rates of over 20G.
>>
>> I designed an all solid-state, power distribution controller
>> that eliminated relays used on our legacy products.
>>
>> http://aeroelectric.com/Pictures/Misc/D-Sub_Power_Dist_2.jpg
>>
>> First flight video can be viewed here:
>>
>> http://www.aeroelectric.com/Pictures/Video/GQM-163_First-Flight.mp4
>>
>>
>>
>> Bob . . .
>>
>> ==========
>> br> fts!)
>> r> > rel="noreferrer" target="_blank">
>> http://www.matronics.com/contribution
>> -Matt Dralle, List Admin.
>> ==========
>> -
>> Electric-List" rel="noreferrer" target="_blank">
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>> ==========
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>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contribution
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>>
>>
>>
>
> --
> https://CheerfulCurmudgeon.com/
> *Sooner meet a bereaved she-bear than a fool with his nonsense. *Proverbs
> 17:12
>
Message 2
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| Subject: | Re: Always Hot Power to Injectors and Ignition Coils |
Sorry, still not able to post directly.
A couple of questions. How will you do a =9Cmag check=9D if
the coils are always powered? Or is your switch going to provide only
the ground? At least in the case of SDS, a switch for each coil pack is
recommended. They do not recommend switching off the ECU for a mag
check.
One of my design goals was to be able to switch off the alternators and
batteries to the main busses using lever lock type Honeywell TL mil-spec
switches. Assuming at least one of the hot battery busses is powered (no
switches, no relays/contactors) - the engine keeps running normally.
Does anyone have any experience with the somewhat pricey but seemingly
reliable and well built Gigavac MX series contactors? I realize they
aren=99t available on the aviation aisle at NAPA, but I can always
carry a spare.
Lastly, what software are you guys using to draw your very nice
electrical schematics? I=99m looking for something that doesn
=99t have a steep learning curve that an old guy can pick up reasonably
quickly.
Thanks for the help and education.
Krea Ellis
Message 3
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| Subject: | Re: Always hot power for fuel injectors and ignition |
coils
Charlie, you are not a minority of one. I am on your side. The master switch
should shut off all electrical power except to the engine. The engine bus
should be supplied by two current paths. The pilot should have the ability to
shut off all sources of electrical power as close to the sources as possible.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=494858#494858
Message 4
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| Subject: | Re: Always hot power for fuel injectors and ignition |
coils
Not a minority of two either.
Bob Reed
Sent from my iPhone
> On Feb 17, 2020, at 8:11 AM, user9253 <fransew@gmail.com> wrote:
>
>
> Charlie, you are not a minority of one. I am on your side. The master switch
> should shut off all electrical power except to the engine. The engine bus
> should be supplied by two current paths. The pilot should have the ability to
> shut off all sources of electrical power as close to the sources as possible.
>
> --------
> Joe Gores
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=494858#494858
>
>
>
>
>
>
>
>
>
Message 5
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| Subject: | Re: Last design task for Raytheon |
>
> Time: 06:45:11 PM PST US
> From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
> Subject: AeroElectric-List: Last design task for Raytheon
>
>
> Setting up new computer. While cleaning off some old
> files on an archive-drive, I stumbled across a video
> of first-flight on the last vehicle design program
> I worked for RAC.
>
...
>
>
> That is extremely cool. That thing "gets to getting" pretty darned fast.
That is extremely cool. That beast "gits to gittin" like right NOW.
Has to be interesting to design for those kinds of accelerations.
Very cool.
Ron
>
>
Message 6
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| Subject: | Re: Always hot power for fuel injectors and ignition |
coils
Im on board with this philosophy too.
Jeff Parker
> On Feb 17, 2020, at 09:43, Robert Reed <robertr237@att.net> wrote:
>
>
> Not a minority of two either.
>
> Bob Reed
> Sent from my iPhone
>
>> On Feb 17, 2020, at 8:11 AM, user9253 <fransew@gmail.com> wrote:
>>
>>
>> Charlie, you are not a minority of one. I am on your side. The master switch
>> should shut off all electrical power except to the engine. The engine bus
>> should be supplied by two current paths. The pilot should have the ability
to
>> shut off all sources of electrical power as close to the sources as possible.
>>
>> --------
>> Joe Gores
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=494858#494858
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
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