From: Dave Reed (dave.reed@dol.net)
Date: Tue Mar 30 2004 - 11:14:19 PST
Hi Dick-
Thanks for your informative reply. My turbine has a 28 volt Leece
Neville alternator like a military truck uses and a SAE bell housing
with no generator or blower on the output shaft like the west coast
turbine. I was thinking that the 400 cycle generator was possibly
a test load to use up power output. Another clue to the puzzle is
on my nameplate. "Accessory output speed 6775 RPM" and
"Gen output speed 3000 RPM" So the APU suggestion makes a
lot of sence too if you figure that the main output was for a
generator.at 3000 rpm. I originally was confused as to the "Gen"
reference on the nameplate referring to the truck alternator, but now
maybe this was not the generator being referred to. Maybe it was
to be for both APU's and trucks? Hopefully others on the list have
seen these beasts before. Thanks again for your input. This list
is great!!!!!
Dave Reed
On 30 Mar 2004, at 10:14, rertman@ix.netcom.com wrote:
> Dave,
>
> I looked at the eBoo info. The 38.5 KW generator puts out 115 VAC 400 Hz
> 3-phase electricity. I seriously doubt it's a truck engine. Most likely,
> it was in a flight line power cart and used to provide 400 Hz power to
> aircraft for something like starting large jet engines or for for aircraft
> ground testing. It may also have been an auxiliary power unit (APU) that
> was mounted in a large aircraft, also for starting and running electrical
> and/or electronic gear on the ground.
>
> Some time back, Teledyne bought out the Continental Engine Co., which makes
> aircraft engines, including piston and turbine engines. Teledyne Continental
> Motors has a facility in Ohio and their phone number is 419-470-3000. That
> facility mostly makes turbine engines and related stuff for the military.
>
> Back in the 70's, there were some turbine powered commercial tractor-trailer
> rigs on the road. I think they were made by Ford. The tractors were cab over
> and their exhaust stacks were HUGE...about 18 or 20 inches in diameter. And
> they REALLY hauled butt up the hills. They used a special automatic transmission
> driven by a set of reduction gears. The engines basically had 2 speeds; idle
> and run. The special transmission took care of changing ratios for the speed
> range.
>
> With that generator attached, I'm almost certain that the unit was used as a
> power generator on the flight line. I doubt that it was the APU on an aircraft.
>
> Hope this helps,
>
> Dick
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