What SU stands for

[Michael J. Kupec]

One of our LVDT's was linear (position one), the other two definately were
not.  The linearity just depended on how they were wound.  All three looked
the same - used same type connectors for wiring - made things real
"exciting" when a velocity LVDT was accidentally installed as a position
unit. You have nothing but respect for the hardware when you see the control
stick snap back and forth when the 2500 psi hydraulic pressure is applied to
the system!

Ah the good old days in the AF are starting to come back - glad I don't miss
them!

Michael J. Kupec
mkupec at erols.com
http://members.xoom.com/BroncoMike

I live with constant fear and danger every day...
    and sometimes she lets me go four-wheeling!

Get in, Sit down, Shut up, and Hold on!

It's a Bronco thing, They wouldn't have a clue!

Management & Data Systems, Lockheed Martin Corporation
Woodbridge, Virginia, USA (703) 680-6903
1970 Bronco w/351W (in a constant state of disassembly/refinement...)
1964 1/2 260 Convertible  w/PS, PB, & Power Top
1965 289 HP "K" Coupe w/PS, PB, & Pony Int. (Early '65, not a GT)

-----Original Message-----
From: Andrew W. Macfadyen <am018 at post.almac.co.uk>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Thursday, July 09, 1998 6:04 AM
Subject: Re: What SU stands for


>LVDTs a real misnomer, from a lab I did years back I seem to remember they
are
>anything but linear !
>
>Michael J. Kupec wrote:
>
>> Zack,
>>
>> Thanks for the correction.  I knew it didn't sound right, but I knew the
>> last two letters were Displacement Transducer.  As I said, it was about
15
>> years ago and I knew we used three of them for each control axis -
measured
>> force, velocity and position for each axis and fed the whole mess through
a
>> tube based modulator/demodulator (it was a 1958 designed Singer Link
>> Simulator). I know they are quite sensitive and they didn't play well
with
>> surrounding magnetic objects - a small screwdriver with a magentic tip
would
>> throw these units off when the magent was too close to the transducers.
Had
>> to use non-metallic tools to lock/unlock their set screws. I know I
really
>> don't miss them anymore!
>>
>> Michael J. Kupec
>> mkupec at erols.com
>> http://members.xoom.com/BroncoMike
>>
>> I live with constant fear and danger every day...
>>     and sometimes she lets me go four-wheeling!
>>
>> Get in, Sit down, Shut up, and Hold on!
>>
>> It's a Bronco thing, They wouldn't have a clue!
>>
>> Management & Data Systems, Lockheed Martin Corporation
>> Woodbridge, Virginia, USA (703) 680-6903
>> 1970 Bronco w/351W (in a constant state of disassembly/refinement...)
>> 1964 1/2 260 Convertible  w/PS, PB, & Power Top
>> 1965 289 HP "K" Coupe w/PS, PB, & Pony Int. (Early '65, not a GT)
>>
>> -----Original Message-----
>> From: Zack <zubenubi at inetport.com>
>> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>> Date: Wednesday, July 08, 1998 10:08 PM
>> Subject: Re: What SU stands for
>>
>> > In the aircraft simulator arena - LVDT stands for Low Voltage
Displacement
>> > Transducer -
>>
>> Not quite... Linear Variable Differential Transformer.  Your
>> description is more or less correct, though (and that's the important
>> bit :-)
>>
>> Zack
>
>
>