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nuckolls.bob(at)aeroelect
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 Posted: Tue Dec 22, 2020 9:16 am Post subject: Jack's Place |
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At 02:11 PM 12/18/2020, you wrote:
| Quote: | I don't understand the reference...
"This closure method was no doubt 'proofed' by
Puff-the-Magic-Dragon who resided in Jack Thurman's
house of horrors."
But this "Jack" guy sounds like a lot of fun  |
Yeah, we used to joke about 'running the
gauntlet Jack's Place'. My most memorable
experience was during an interval where I
was not an employee of Beech but a supplier.
They were trying to qualify an ov protection
system onto the proposed Model 58 "Lightning", a single
engine, turbine powered airplane. Seems the
alternator on the proposed engine ran 7000
rpm in cruise. It was a 70A machine as I
recall. Seems that every example of ov management
module in inventory could not corral this whirling
dervish 50 times in a row with minimum load
and no battery. The field disconnect relays
contacts would burn up. I knew how to 'fix'
the relays but . . .
My boss, Fred Coslett at Electro-Mech, came to my
desk one morning and cited the problem Beech
was having with the quest. I had an idea gleaned
from some trade magazine for a little different
ov management methodology.
I took one of our production regulator/ov
products (already qualified on Bonanza and
Baron lines) but unsuitable for Lightning
and modified it with a crowbar ov protection
system.
Took it out to Jack's Place and he wired
it to the mock-up. He fired up the test
bench and announced his intention to 'start
out easy' . . . idle rpm, battery on line.
"Naw," says me. "Let's give it the acid test
right out of the gate."
He set it up and punched the fault button.
Unlike virtually all of the previously
tested products, it seemed as if nothing
happened . . . except for a short brightening
of lights and system voltage dropping to
battery voltage. He looked at the chart
recorder and it showed the typical fast
rise to 32 volts where it abruptly relaxed
and dropped to battery voltage.
"Hmmm" says Jack, "Wonder it will stand
50 repeats with the 51st being identical to
first."
I told him that he could run 100 tests and they
would all be the same . . . the 'test' wasn't
exercising MY ov management system, it was
only proving the circuit breaker qualified to
Beech requirements decades ago.
My modified regulator/ov was a shoo-in for the
Lightning. It would have been the first crowbar
system to get approved on a TC aircraft . . . then
they canceled the program. Last time I saw
the Lightning, it was sitting outside one of
Rutan's hangars at Mojave. I spotted it while
wandering the airport on the evening of Voyager
roll-out. Heard later that Burt acquired the
58P carcass to salvage the engine and instruments.
It would be 10-15 years later than crowbar
ov was qualified onto TC aircraft as a feature
in B&C's standby alternator offerings. Voyager
was among the first to fly with crowbar protection
along with B&C's family of OBAM aircraft
customers.
Nowadays, crowbar protection has found its
way into a number of TC regulator/ov products . . .
don't think it ever found its way onto
Electro-Mech products . . . but the genesis
occurred at EMI and was birthed in Jack's Place.
| Quote: | Also, what's a 30 Series airplane? The picture looks like a Production aircraft but I can't identify it. (I'm gonna guess... Cessna 210 ???)
|
That picture was taken on the A36 production
line at Beech. That was in Plant II and before
the line was moved to Mexico. I think Beech
was the 4th aircraft company to occupy that
building . . . it's gone now . . . replaced
by a Costco.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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rv8iator
Joined: 11 Apr 2006
Posts: 144
Location: Newberg, OR
|
| Posted: Tue Dec 22, 2020 11:41 am Post subject: Jack's Place |
|
|
Beech 38-P
[img]cid:ii_kj0e0di00[/img]
[img]cid:ii_kj0e18pk1[/img]
Chris Stone
RV-8
On Tue, Dec 22, 2020 at 9:25 AM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | At 02:11 PM 12/18/2020, you wrote:
| Quote: | I don't understand the reference...
|
"This closure method was no doubt 'proofed' by
Puff-the-Magic-Dragon who resided in Jack Thurman's
house of horrors."
But this "Jack" guy sounds like a lot of fun
Yeah, we used to joke about 'running the
gauntlet Jack's Place'. My most memorable
experience was during an interval where I
was not an employee of Beech but a supplier.
They were trying to qualify an ov protection
system onto the proposed Model 58 "Lightning", a single
engine, turbine powered airplane. Seems the
alternator on the proposed engine ran 7000
rpm in cruise. It was a 70A machine as I
recall. Seems that every example of ov management
module in inventory could not corral this whirling
dervish 50 times in a row with minimum load
and no battery. The field disconnect relays
contacts would burn up. I knew how to 'fix'
the relays but . . .
My boss, Fred Coslett at Electro-Mech, came to my
desk one morning and cited the problem Beech
was having with the quest. I had an idea gleaned
from some trade magazine for a little different
ov management methodology.
I took one of our production regulator/ov
products (already qualified on Bonanza and
Baron lines) but unsuitable for Lightning
and modified it with a crowbar ov protection
system.
Took it out to Jack's Place and he wired
it to the mock-up. He fired up the test
bench and announced his intention to 'start
out easy' . . . idle rpm, battery on line.
"Naw," says me. "Let's give it the acid test
right out of the gate."
He set it up and punched the fault button.
Unlike virtually all of the previously
tested products, it seemed as if nothing
happened . . . except for a short brightening
of lights and system voltage dropping to
battery voltage. He looked at the chart
recorder and it showed the typical fast
rise to 32 volts where it abruptly relaxed
and dropped to battery voltage.
"Hmmm" says Jack, "Wonder it will stand
50 repeats with the 51st being identical to
first."
I told him that he could run 100 tests and they
would all be the same . . . the 'test' wasn't
exercising MY ov management system, it was
only proving the circuit breaker qualified to
Beech requirements decades ago.
My modified regulator/ov was a shoo-in for the
Lightning. It would have been the first crowbar
system to get approved on a TC aircraft . . . then
they canceled the program. Last time I saw
the Lightning, it was sitting outside one of
Rutan's hangars at Mojave. I spotted it while
wandering the airport on the evening of Voyager
roll-out. Heard later that Burt acquired the
58P carcass to salvage the engine and instruments.
It would be 10-15 years later than crowbar
ov was qualified onto TC aircraft as a feature
in B&C's standby alternator offerings. Voyager
was among the first to fly with crowbar protection
along with B&C's family of OBAM aircraft
customers.
Nowadays, crowbar protection has found its
way into a number of TC regulator/ov products . . .
don't think it ever found its way onto
Electro-Mech products . . . but the genesis
occurred at EMI and was birthed in Jack's Place.
| Quote: | Also, what's a 30 Series airplane? The picture looks like a Production aircraft but I can't identify it. (I'm gonna guess... Cessna 210 ???)
|
That picture was taken on the A36 production
line at Beech. That was in Plant II and before
the line was moved to Mexico. I think Beech
was the 4th aircraft company to occupy that
building . . . it's gone now . . . replaced
by a Costco.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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| Filesize: |
388.01 KB |
| Viewed: |
1234 Time(s) |
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| Filesize: |
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_________________
C. Stone (RV8iator) |
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Tue Dec 22, 2020 2:15 pm Post subject: Jack's Place |
|
|
Chris,
Thank you so much for the pictures. I was not employed
at Beech during this program so my contact with
the project was limited to EMI's proposed alternator
controller.
I looked up the following information on N241FP:
2006 BAYLES RICHARD L LIGHTNING
Fixed wing single engine
(6 seats / 1 engine)
BEECHCRAFT HERITAGE MUSEUM INC
TULLAHOMA , TN, US
(Corporation)
This looks like an OBAM aircraft project. Quite
an undertaking!
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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rv8iator
Joined: 11 Apr 2006
Posts: 144
Location: Newberg, OR
|
| Posted: Tue Dec 22, 2020 3:47 pm Post subject: Jack's Place |
|
|
A combination of Bonanza parts... Well done in the Beech tradition!
Chris
<snip>
I looked up the following information on N241FP:
2006 BAYLES RICHARD L LIGHTNING
Fixed wing single engine
(6 seats / 1 engine)
On Tue, Dec 22, 2020 at 2:23 PM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | Chris,
Thank you so much for the pictures. I was not employed
at Beech during this program so my contact with
the project was limited to EMI's proposed alternator
controller.
I looked up the following information on N241FP:
2006 BAYLES RICHARD L LIGHTNING
Fixed wing single engine
(6 seats / 1 engine)
BEECHCRAFT HERITAGE MUSEUM INC
TULLAHOMA , TN, US
(Corporation)
This looks like an OBAM aircraft project. Quite
an undertaking!
Bob . . .
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
_________________
C. Stone (RV8iator) |
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