Today's Message Index:
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1. 06:47 AM - Re: Excessive Amperage (dj_theis)
2. 07:27 AM - ADS-B issue (merlewagner2)
3. 10:16 AM - Re: ADS-B issue (Eric Page)
4. 10:57 AM - Re: Excessive Amperage (Ceengland)
Message 1
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| Subject: | Re: Excessive Amperage |
.Is anyone else confused by Figures 2, 3 and 5 in the EarthX article that Joe linked
above?..
Yes, at a minimum its unclear what they are trying to convey and certainly misleading.
Im always suspicious when the axis labels are missing units (Time is in.Time units).
It looks like the marketing department took control of the web page from the engineering
staff.
Dan
--------
Dan Theis
Scratch building Sonex #1362
Still working on the Revmaster Alternator improvement
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Not sure if this is relevant to this forum but...
After going thru major fixes on my Tailwind I had a couple of test flights to check
things out.
I took a look at Flightaware.com to see the flights and they came up but the airspeeds
were very erratic. Positioning/tracking looked great, just airspeed was
crazy.
I decided to pull an ADS-B report from the FAA to see what that stated. They came
back with no report found on either flight. They suggested I send in the GPS/Transponder
for repair.
Any thoughts on what would cause the FAA to throw out a flight, ie: not create
a report. I don't have the detail on what info is broadcast on ADS-B so maybe
someone might know of a document that explains the process.
Merle
--------
KC1DNJ
General Radiotelephone
Commercial SEL
A & P
Building scale P51, rebuilding Tailwind W10
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Do you have a GPS-derived ground speed readout on the panel? Is it erratic in
flight? If so, then it's probably a GPS problem and the transponder is just sending
out the bad data that it's receiving.
If that's not it, then you might try a couple of things. First, make another flight,
being sure to climb to at least a few thousand feet, fly a few straight
legs of several minutes each, and talk to ATC to confirm that they can see you
and are receiving all of the ADS-B data that they normally expect. If ATC reports
a problem, or you still can't get an ADS-B report from the FAA, then go
to the nearest avionics repair station and get the transponder tested.
Only if those two things show problems would I remove the transponder and send
it for an expensive repair.
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| Subject: | Re: Excessive Amperage |
Looks like nonsense to me, too. Of course, I've been less than impressed with EX
since they 1st started hyping their stuff on the VAF forum; it was obvious that
their spokesperson knew a whole lot less than they pretended.
1st question about the graphs in question: Why is the supply voltage changing,
if we're talking about an aircraft (or car, or motorcycle, etc) charging system?
If properly sized, the alternator output voltage isn't going to vary in normal
operation.
Makes me wonder if they were really trying to show the relationship between charge
voltage and charge current, which should have been plotted as x/y, without
time on the graph at all.
--------
Charlie
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