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New CRs - 4 Oct 07

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Dennis.Kirby(at)kirtland.
Guest

Posted: Thu Oct 04, 2007 11:43 am Post subject: New CRs - 4 Oct 07

Classification:  UNCLASSIFIED  

 

  

Team – Looks like Lockheed-Martin has found a bunch of stuff to fix lately while they’ve got the turret ball opened up for service … four new CRs received ATP this week:  

   

   

CR-1775, “Allow BC/FC Engagement to Manual  State Transition”   

(a BC/FC-Software CR)  

Currently, BMC4I software does not allow BC/FC to transition into the “Manual” state during an engagement sequence.  So when BC/FC encounters an occasional failure during any of their engagement states, the system cannot be easily reset.  By modifying the BMC4I Software Requirement Spec (SRS) to allow BC/FC to transition from an “Engagement” state to a “Manual” state, the BC/FC system can then be cleanly shut down, either manually (by the operator), or automatically.  

   

CR-1776, “Turret Solar Avoidance Hardware Fixes"    

(a BC/FC CR)  

Certain areas and components of the turret ball may be damaged by exposure to incoming solar radiation due to out-gassing contamination and overexposure of the Optical Inspection System cameras.  This CR describes items to be repaired and the repair methods which will reduce risk of damage to the system during HPSI testing.    

   

CR-1777, “Turret Ball Tuned-Mass-Dampers”   

(a BC/FC CR)  

Flight testing has revealed certain dynamic wavefront disturbances that are attributable to harmonic vibrations within the BC/FC beam train – specifically, within the Beam Expander.  These vibrations contribute to jitter and degraded optical performance.  This CR installs several (up to 3 Tuned Mass Dampers (TMDs, which serve as vibration suppression devices) in the turret assembly to minimize vibration in this part of the optical path.  

   

CR-1778, “Secondary Mirror Tip/Twang"    

(a BC/FC CR)  

Flight testing has (also) revealed that excessive vibrations in the Secondary Mirror during flight is causing the mirror to momentarily move to its extreme limit (“twang”) in the tip and tilt axis.  This results in a control loop failure, which triggers a termination of the engagement sequence.  This CR revises the operating clearance of the torsional stops in the Secondary Mirror tip/tilt axis, in order to eliminate twanging of the mirror.  

   

   

You can find the CRs here:   

   

[url=file:///\\ABLSERVER11\SPO_General\Meetings\Boards\Change_Board\CRs1600-1799\CR1775PC0.doc]S:\Meetings\Boards\Change_Board\CRs1600-1799\CR1775PC0.doc[/url]  

[url=file:///\\ABLSERVER11\SPO_General\Meetings\Boards\Change_Board\CRs1600-1799\CR1776PC0.doc]S:\Meetings\Boards\Change_Board\CRs1600-1799\CR1776PC0.doc[/url]  

[url=file:///\\ABLSERVER11\SPO_General\Meetings\Boards\Change_Board\CRs1600-1799\CR1777PC0.doc]S:\Meetings\Boards\Change_Board\CRs1600-1799\CR1777PC0.doc[/url]  

[url=file:///\\ABLSERVER11\SPO_General\Meetings\Boards\Change_Board\CRs1600-1799\CR1778PC0.doc]S:\Meetings\Boards\Change_Board\CRs1600-1799\CR1778PC0.doc[/url]  

   

Dennis Kirby  

   

   

      

Classification:  UNCLASSIFIED   

 

  [quote][b]

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a58r(at)verizon.net
Guest

Posted: Thu Oct 04, 2007 12:10 pm Post subject: New CRs - 4 Oct 07

Dennis,

That most certainly makes my sleep a lot better!



 regards,

Bob N.    FireFly 070 Old Kolb

http://www.angelfire.com/rpg/ronoy/

do not archive



 



 [quote][b]

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Dennis.Kirby(at)kirtland.
Guest

Posted: Fri Oct 05, 2007 9:49 am Post subject: New CRs - 4 Oct 07

Kolb Friends -



I apologize for mistakenly sending this e-mail to the List - my bad.

Please ignore.



(That's what happens when I try to mix work and play using the same

computer!)



Dennis Kirby

Do not archive

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jindoguy(at)gmail.com
Guest

Posted: Fri Oct 05, 2007 2:02 pm Post subject: New CRs - 4 Oct 07

Well, You didn't include XXX's and OOO's and comments from animals about the activities of the day.

I guess since you're not the first to post accidentally to the forum it's no big deal.

I admit it had me scratching my head and inventing all sorts of applications to a Kolb Mk III. 



Rick

On 10/5/07, Kirby Dennis Contr MDA/AL <Dennis.Kirby(at)kirtland.af.mil (Dennis.Kirby(at)kirtland.af.mil)> wrote: [quote]--> Kolb-List message posted by: "Kirby Dennis Contr MDA/AL" < Dennis.Kirby(at)kirtland.af.mil (Dennis.Kirby(at)kirtland.af.mil)>





Kolb Friends -



I apologize for mistakenly sending this e-mail to the List - my bad.

Please ignore.



(That's what happens when I try to mix work and play using the same 

"Ya'll drop on in"

takes on a whole new meaning

when you live at the airport.  [quote][b]

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