Documents: Synchro and Resolver Handbook and Guide

17 Feb 2025

If you work with robotics, avionics, an other fields that use angles you might just run into one or more these things. They are motor like devices that can transmit, or receive angles called Synchros in older aircraft they are used in pairs, a transmitter (tx) and a receiver (rx) . As you can see in Figure 1 by moving CG the CR will move exactly in step with its counter part. This figure is from Synchro Application Guide. There is lots more information in the Synchro handbook.

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dougw 7 months ago

It has been decades since I've seen a synchro-resolver...
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ralphjy 7 months ago in reply to dougw

I haven't used them since the late 70's when I left avionics. I think I still have some size 11s buried somewhere in storage.
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beacon_dave 7 months ago in reply to ralphjy

Late 80's here but they were used on antenna rotation gear to provide a remote readout of Az/El angles.
Later moved to rotary encoders and digital readouts for computerised control.
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ralphjy 7 months ago in reply to beacon_dave

I first encountered them as a systems engineer when I worked on retrofitting the A-6E with the Carrier Airborne Inertial Navigation System (CAINS).
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phoenixcomm 6 months ago in reply to ralphjy

ralphjy Never guess who I worked for on the Island? Duh, yup Mother Grumman! and You will never guess where our lab was? Nope. In the building that had the E6x Antenna on the damn room!! And our two PE machines where under it. Across the hall from the F16 no fuselage but every movable part on B-Line strut that you can buy at you local electrical distributor, I think they called it a Green Monster as the strut was green. LOL ~~ Cris
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phoenixcomm 6 months ago in reply to ralphjy

ralphjy Never guess who I worked for on the Island? Duh, yup Mother Grumman! and You will never guess where our lab was? Nope. In the building that had the E6x Antenna on the damn room!! And our two PE machines where under it. Across the hall from the F16 no fuselage but every movable part on B-Line strut that you can buy at you local electrical distributor, I think they called it a Green Monster as the strut was green. LOL ~~ Cris
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ralphjy 6 months ago in reply to phoenixcomm

phoenixcomm small world! I never made it back east for the flight test as it was considered a minor retrofit and our field engineer handled it.

Those were the good old days - our Litton facility in San Fernando Valley was located next to farmland. Nowadays that area is all shopping malls and has a few high rise buildings.
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