From: Arthur W. Brooks
Sent: Tuesday, June 05, 2007 3:00 PM
To: Thomas G. Brown
Cc: Robert A. Ellis
Subject: Full Period Deflections

Attachments: Full Period Deflections.ppt

Tom,

I've run a few support cases for the Full Period to see how stiff it is. 

If we fully support the Period under each of the feet or even just the A & B feet, the deflections are fairly
 small (~3 mils). 

If we support it off the C feet only but maintain full contact (keeping it level of course) the deflections 
increase to almost 14 mils. 

If we wind up only partially supporting the C feet at a few points (see attached), the deflections can grow 
quite large (182 mils!) with the period rocking back towards the NB port and actually pulling up on the front 
feet (probably not too stable!). In this case if we add support points to the back A feet, this is significantly 
reduced to under 6 mils.

When you get a chance, let me know if you have specific support locations and I will run them thru ANSYS to see how it deforms.

Art