From: Mark E. Melton [mmelton@swales.com]
Sent:
Wednesday, September 01, 2004 2:40 PM
To: Mark
Goans
Subject: FW: GLAST Project RFA Responses for Originator
Review
Mark,
Below are 2 RFA
closures from Jim Ryan to LAT PDR RFA 46 and 48. These were the last 2
RFAs open from the LAT PDR.
Mark
____________________________________________
Mark E. Melton
Systems Engineer
Swales Aerospace
Bldg 12, Rm N210A
GSFC
(301) 286-7936 (V)
(301) 286-5717 (F)
Mark,
RFA46
I will
accept the response to RFA 46 from the GLAST PDR. However, if you read the
specific request and the response, you will see that only the Cal to Grid
interface is addressed for "shear restraint." At the time this RFA was
written, that was my main concern. However, this RFA was intended to cover
the Tracker to Grid interface, the LAT to S/C interface, and other primary
structure and alignment critical interfaces. Since I am somewhat familiar
with most of these interfaces now (and the designs have matured), I believe that
they do have positive shear restraints (pins, tight fitting shoulder bolts,
etc.), and I will accept this response. The RFA response would have been
more complete if all of these critical interfaces were addressed for shear
restraint as was done with the "locking features" part of the response.
RFA 48
I will accept the response to RFA 48 concerning a
comprehensive strength qualification "plan" for LAT. This is significantly
more information than was presented at the PDR. I believe that a
subsequent RFA (delta CDR mechanical peer review?) was written (and is still
open) to get an advance copy of the "detailed" strength qualification plan for
the Grid. This plan should be reviewed carefully to ensure that the right
tests (static pull) are being done to the right interfaces to properly strength
qualify the Grid.
Jim Ryan
At 12:40 PM 8/30/04 -0400, you wrote:
Jim,
Attached are 2
responses to RFAs you wrote at the GLAST LAT PDR. Mark Goans, the Code
300 Review chair, has asked that all Project approved RFA responses by
reviewed and approved by the originators prior to official submittal to
him.
Please review the attached
responses and let me know if they satisfactorily close the RFAs you
generated. You can provide your approval or comments back to me and I
will distribute them to the appropriate GLAST Project
personnel.
Responses are attached
for the following RFAs:
GLAST LAT
PDR # 46, 48
In addition, an
updated response to LAT PDR 47 was sent to you last week in response to the
comments you provided. Please provide your approval or any comments you
have to that response as well.
Thanks for your help in reviewing the GLAST Project,
Mark
____________________________________________
Mark E. Melton
Systems
Engineer
Swales Aerospace
Bldg 12, Rm N210A
GSFC
(301) 286-7936
(V)
(301) 286-5717
(F)