AOA indicator pinout

Les Matheson wrote:
It may read to a number 40, but that is not degrees, it is units of AOA.

Units are relatable to Angle of Attack, but not equal to angle.

IIRC F-4 optimum turn was 16 units, not 16 degrees of AOA, buffet was 23
units. Pilots don't know degrees, they fly units. Test pilots and
engineers can tell you what the unit-angle relation is, but it isn't 1:1.

Les


"Bill Daniels" bildan@comcast-dot-net wrote in message
. ..
Interesting question. This AOA indicator reads out to +40 degrees and
AFIK no general aviation airfoil stalls at more than 16 degrees. Whatcha
usin' in on?

Bill Daniels
"Dan" wrote in message
...
I need the pinout for ARK-10A/A24G-8 AOA indicator. Part number is
SLZ9421. Can anyone provide a source or the information?

Dan, U.S. Air Force, retired



Any idea what the conversion is? I have modified a vane AOA
transducer to use synchro. I suppose I could figure it out.

Dan, U.S. Air Force, retired

"Dan" wrote

1/2 scale A-10, aluminum, Vne 350ish, range on internal fuel at 75%
approximately 400 miles, ducted fan (7,000 rpm-ish), 1 place. It started
as an mind exercise based on my headroom requirements not being available
in any homebuilt design plus A-10 being a rather neat aircraft. I'm not
going to build it because I will probably never get my medical back, but I
make sub assemblies for the fun of it. I have made two main instrument
panels for it, one IFR the other VFR. It's occupational therapy

Sounds cool!

Re think it as a two place, and find someone else that has the same dream,
or you can fly with another pilot.
--
Jim in NC

"Dan" wrote in message
...
Rich S. wrote:
"Dan" wrote in message
...
1/2 scale A-10, aluminum, (snip)

Whew! Had to read that three times. I thought you said, "1/2 A scale . .
." I envisioned a Cox .049. )

Rich S.
You know it's just a matter of time before someone builds a man
capable airplane powered by a huge number of TeeDee .049 engines.

Dan, U.S. Air Force, retired


Hmm, just duct tape a bunch of them on a sailplane - mine only requires 20
pounds of thrust for level flight.

Bill Daniels

Morgans wrote:
"Dan" wrote

1/2 scale A-10, aluminum, Vne 350ish, range on internal fuel at 75%
approximately 400 miles, ducted fan (7,000 rpm-ish), 1 place. It started
as an mind exercise based on my headroom requirements not being available
in any homebuilt design plus A-10 being a rather neat aircraft. I'm not
going to build it because I will probably never get my medical back, but I
make sub assemblies for the fun of it. I have made two main instrument
panels for it, one IFR the other VFR. It's occupational therapy

Sounds cool!

Re think it as a two place, and find someone else that has the same dream,
or you can fly with another pilot.


When I saw the two seater version of the real thing I thought about
it. Problem is I want a sliding canopy so that's out. Besides, despite
the back seat being closer to the CG the math gets complicated. In my
plan there's a hell hole on the bottom between the engines. In order to
make CG with the second seat I'd have to move the batteries aft to where
the access panel is.

Dan, U.S. Air Force, retired

Bill Daniels wrote:
"Dan" wrote in message
...
Rich S. wrote:
"Dan" wrote in message
...
1/2 scale A-10, aluminum, (snip)
Whew! Had to read that three times. I thought you said, "1/2 A scale . .
." I envisioned a Cox .049. )

Rich S.
You know it's just a matter of time before someone builds a man
capable airplane powered by a huge number of TeeDee .049 engines.

Dan, U.S. Air Force, retired


Hmm, just duct tape a bunch of them on a sailplane - mine only requires 20
pounds of thrust for level flight.

Bill Daniels


Now THAT I'd like to see. You could do like the guy with the Cri Cri
did and use a pair of model jet engines.

Dan, U.S. Air Force, retired

Dan wrote:
cavelamb himself wrote:

Dan wrote:

Morgans wrote:

"Dan" wrote

Mine reads to + 30º. I am finishing out an instrument panel for
an airplane I will never be able to afford to complete. My own design.



Hmmm, interesting.

Now that our curiosity is aroused, care to tell us more?

Planform, construction materials/methods, approximate performance
parameters, locomotion, how many places?

So many questions! ;-))



1/2 scale A-10, aluminum, Vne 350ish, range on internal fuel at 75%
approximately 400 miles, ducted fan (7,000 rpm-ish), 1 place. It
started as an mind exercise based on my headroom requirements not
being available in any homebuilt design plus A-10 being a rather neat
aircraft. I'm not going to build it because I will probably never get
my medical back, but I make sub assemblies for the fun of it. I have
made two main instrument panels for it, one IFR the other VFR. It's
occupational therapy

Dan, U.S. Air Force, retired


I thought about building a cockpit simulator - for similar reasons.
Decided to go sailing instead.

But I certainly understand...

Richard


Sailing has its advantages not the least of which is no FAA. I haven't
been sailing in decades, maybe I should build a boat instead.

Dan, U.S. Air Force, retired

Dan, U.S. Air Force, retired


if you want to build, build.
If you want to fly, buy.

Works the same with boats.

cavelamb himself wrote:
Dan wrote:
cavelamb himself wrote:

Dan wrote:

Morgans wrote:

"Dan" wrote

Mine reads to + 30º. I am finishing out an instrument panel for
an airplane I will never be able to afford to complete. My own
design.



Hmmm, interesting.

Now that our curiosity is aroused, care to tell us more?

Planform, construction materials/methods, approximate performance
parameters, locomotion, how many places?

So many questions! ;-))



1/2 scale A-10, aluminum, Vne 350ish, range on internal fuel at
75% approximately 400 miles, ducted fan (7,000 rpm-ish), 1 place. It
started as an mind exercise based on my headroom requirements not
being available in any homebuilt design plus A-10 being a rather
neat aircraft. I'm not going to build it because I will probably
never get my medical back, but I make sub assemblies for the fun of
it. I have made two main instrument panels for it, one IFR the other
VFR. It's occupational therapy

Dan, U.S. Air Force, retired


I thought about building a cockpit simulator - for similar reasons.
Decided to go sailing instead.

But I certainly understand...

Richard


Sailing has its advantages not the least of which is no FAA. I
haven't been sailing in decades, maybe I should build a boat instead.

Dan, U.S. Air Force, retired

Dan, U.S. Air Force, retired


if you want to build, build.
If you want to fly, buy.

Works the same with boats.




See? There you go being practical again. I have plans for 12 - 16
foot sailboats. Maybe you can buy me a 42 footer for my birthday, it's 1
November

Dan, U.S. Air Force, retired

Dan wrote:

cavelamb himself wrote:

Dan wrote:

cavelamb himself wrote:

Dan wrote:

Morgans wrote:

"Dan" wrote

Mine reads to + 30º. I am finishing out an instrument panel for
an airplane I will never be able to afford to complete. My own
design.




Hmmm, interesting.

Now that our curiosity is aroused, care to tell us more?

Planform, construction materials/methods, approximate performance
parameters, locomotion, how many places?

So many questions! ;-))




1/2 scale A-10, aluminum, Vne 350ish, range on internal fuel at
75% approximately 400 miles, ducted fan (7,000 rpm-ish), 1 place.
It started as an mind exercise based on my headroom requirements
not being available in any homebuilt design plus A-10 being a
rather neat aircraft. I'm not going to build it because I will
probably never get my medical back, but I make sub assemblies for
the fun of it. I have made two main instrument panels for it, one
IFR the other VFR. It's occupational therapy

Dan, U.S. Air Force, retired



I thought about building a cockpit simulator - for similar reasons.
Decided to go sailing instead.

But I certainly understand...

Richard



Sailing has its advantages not the least of which is no FAA. I
haven't been sailing in decades, maybe I should build a boat instead.

Dan, U.S. Air Force, retired

Dan, U.S. Air Force, retired



if you want to build, build.
If you want to fly, buy.

Works the same with boats.




See? There you go being practical again. I have plans for 12 - 16
foot sailboats. Maybe you can buy me a 42 footer for my birthday, it's 1
November

Dan, U.S. Air Force, retired


Get a smaller boat to start with.
They are a lot more fun and a whole lot less hassle.
(and a whole lot less expensive!)

I might offer to sell my Catalina 18 for your birthday.
But ONLY because I have a lead on a Catalina 30.

http://www.home.earthlink.net/~cavelamb/index.htm

Richard, U.S. Navy, retired

"Dan" wrote in message
...
Bill Daniels wrote:
"Dan" wrote in message
...
Rich S. wrote:
"Dan" wrote in message
...
1/2 scale A-10, aluminum, (snip)
Whew! Had to read that three times. I thought you said, "1/2 A scale .
. ." I envisioned a Cox .049. )

Rich S.
You know it's just a matter of time before someone builds a man
capable airplane powered by a huge number of TeeDee .049 engines.

Dan, U.S. Air Force, retired


Hmm, just duct tape a bunch of them on a sailplane - mine only requires
20 pounds of thrust for level flight.

Bill Daniels
Now THAT I'd like to see. You could do like the guy with the Cri Cri did
and use a pair of model jet engines.

Dan, U.S. Air Force, retired


It's been done. Bob Carlton has an airshow act with a jet sailplane.

Jet sailplanes may well have a real future. Although the specific fuel
efficiency of model airplane dog whistles is terrible, (but improving)
mating them with an extremely efficient airframe seems to work really well.

Some 'back of the envelope' calcualtions show that a single RC model
microjet in the 50 Lb thrust range would push my glider along at well over
100 knots. The 75 gallon wing tanks normally used for water ballast would
provide a very nice range. If the 'dog whistle' quits, just retract it an
you still have a 50:1 glide ratio.

Bill Daniels

Bill Daniels

Bill Daniels wrote:
"Dan" wrote in message
...
Bill Daniels wrote:
"Dan" wrote in message
...
Rich S. wrote:
"Dan" wrote in message
...
1/2 scale A-10, aluminum, (snip)
Whew! Had to read that three times. I thought you said, "1/2 A scale .
. ." I envisioned a Cox .049. )

Rich S.
You know it's just a matter of time before someone builds a man
capable airplane powered by a huge number of TeeDee .049 engines.

Dan, U.S. Air Force, retired

Hmm, just duct tape a bunch of them on a sailplane - mine only requires
20 pounds of thrust for level flight.

Bill Daniels
Now THAT I'd like to see. You could do like the guy with the Cri Cri did
and use a pair of model jet engines.

Dan, U.S. Air Force, retired


It's been done. Bob Carlton has an airshow act with a jet sailplane.

Jet sailplanes may well have a real future. Although the specific fuel
efficiency of model airplane dog whistles is terrible, (but improving)
mating them with an extremely efficient airframe seems to work really well.

Some 'back of the envelope' calcualtions show that a single RC model
microjet in the 50 Lb thrust range would push my glider along at well over
100 knots. The 75 gallon wing tanks normally used for water ballast would
provide a very nice range. If the 'dog whistle' quits, just retract it an
you still have a 50:1 glide ratio.

Bill Daniels

Bill Daniels


I hadn't realized it had been done. I wonder how altitude affects
performance of the engine.

Dan, U.S. Air Force, retired