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Does Anyone know what S. R. means (not sherical radius)

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mrcadman2u

Aerospace
Joined
Dec 4, 2002
Messages
26
Location
US
I have a drawing that is calling out S. R. and it does not refer to a sherical radius. It is on a Test Enable switch which is on a Thrust Reverse assy.

Thanks for the help in advance.

Jerry Eden
 
Thanks to all who replied.

I finally found out the answer. The S.R. does mean spherical radius on the drawing. Although not per spec the S.R. meant that the spherical radius was a concave radius. This is used for feel so that it creates a "feel" so that the finger can find the switch button more easily.

Thanks again for all the help and answers.

Jerry L. Eden
Sr. Design Engineer
Hydraulics and Landing Gear
 
Ahh, then it is just missing one dimension, either radius center, depth of SR or diameter at intersection with the planar surface.
A good example of how just one missing piece of info can cause much confusion.

"Good to know you got shoes to wear when you find the floor." - [small]Robert Hunter[/small]
 
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