Minutes of the December 4
Meeting

Since yesterday, the design
team has settled on solution #2 (see John Ku's PPT slides from yesterday). Based on today's discussion, this looks
promising in general, though more detailed work needs to be done ASAP. We agreed to meet again at 1 pm on Monday
for two hours.

DETAILS

Swensen/Borden reviewed
potential problem caused by conical pinning:
the preliminary estimate of the induced stress in the flexures is very
high.

ACTION: Erik will perform analysis and provide
results by Monday noon.

Venator - can Swensen ship
the detailed flexure model to John Ku?

ACTION: Erik will check to see if this can be done.

Nordby reviewed initial
design of solution #2 (see John Ku's ppt from 3 Dec), including GRID side of
I/F in corners

ACTION: Martin/Mike Foss will get the detailed solid
model of the flexure from BJ and take the next step in designing this I/F

Ku reviewed his stress
calculations for shear strength of the collar and for tearout of the GRID;
these show approx 2X margin

ACTION: John will perform parallel check of stresses
on flexure and will calculate the bolt preload needed and the allowable loads

Venator led discussion on
whether to reexamine the present level of random vibe

ACTION: Tom V will work with GSFC team to examine
the present values and propose (possibly) reduced input spectrum

Brief discussion of side
joint.

ACTION: Martin will evaluate in more detail and
present results Monday.

Horn: What is the schedule/plan for (1) getting
back into a vibe test, and (2) proceeding with production of the affected parts
of the Tracker and the Grid?