LIGO Document E1000166-x0

DCN - HLTS Suspended Mass Updated Drawings

Document #:
LIGO-E1000166-x0
Document type:
E - Engineering documents
Abstract:
This is a DCN for updated drawings of the parts and assemblies that make up the suspended masses of the HLTS.

These drawings have been reviewed as required as an action of the final design review - see the report M1000126-v3,action 2), repeated here.

"Drawing review: A detailed drawing review to insure that adjustment and alignment features
designed into the HSTS are present in the HLTS. (Calum Torrie will perform this review.) All
key suspension parameters must be checked (center of mass locations, d-values, wire lengths,
etc.)"

Calum Torrie has now completed this review and declared it approved. Copied below are his detailed notes

Charge

* Review adjustment and alignment features designed into the HSTS are present in the HLTS
** Adjustment document is T1000356

* Check all key suspension parameters (center of mass locations, d-values, wire lengths, etc.)"
** Check against T1000012

Notes / recommendations

Top Mass
Top Mass is 12.12 kg
d1 and d1 - confirmed (flexure point is extra stability)
ACTION - Upper wire adjustment - looks okay but ensure ability to touch wire before end of range is noted in assembly procedure (not to affect this PO)
Self locking heli-coils ??? - leave for now as done by LIGO later (not to affect this PO)
Set screws - how to lock? - leave for now could be added later (not to affect this PO)
ACTION - Lower blades, recommend handling tooling or text in assembly procedure at a minimum (not to affect this PO)

Intermediate Mass
Int mass = 12.225 kg
d values look good

Dummy metal
Mass is good
D value checked
Little optic in center included
ACTION - Please check ergo-arm HLTS arm attachment against structure (not part of PO)

Wire lengths (jigs) including overall length
individual wire lengths are good
ACTION - distance from ground to center of optic is 158.5mmm (please add this and how you get to this through structure and suspension to assembly procedure)

Drawings
Offer relief on 32 micro-inch (don't change drawings) - SOW only

-----------------------

Files in Document:
None
Authors:
Keywords:
HLTS SUS DCN
Notes and Changes:
Suspension Assembly:
D070332-v4: Incorporates changes to subassemblies based on HLTS FDR action items.
Rotational Adjuster:
D070326-v2: Added helicoils to push and pull plates, added 2mm shim and corrected assembly order.
D070327-v2: Added vent groove to base plate.
D1001914-v1: Initial release of 2mm shim.
D070331-v2: Outer dimensions of shim now match upper blade clamps.
D070330-v2: Added helicoil for push screw and widened slot for pull screw.
D070329-v2: Added helicoil for pull screw.
Upper Blade Library of Clamps:
D0900665-v2: Added 0.0 degree clamps to library.
D020622-v2: Height is now constant at clamp centerline.
D0900667-v2: Height is now constant at clamp centerline.
D0900668-v2: Height is now constant at clamp centerline.
D0900669-v2: Height is now constant at clamp centerline.
D0900670-v2: Height is now constant at clamp centerline.
D0900671-v2: Height is now constant at clamp centerline.
D0900672-v2: Height is now constant at clamp centerline.
D0900673-v2: Height is now constant at clamp centerline.
D020601-v2: Height is now constant at clamp centerline.
D0900674-v2: Height is now constant at clamp centerline.
D0900675-v2: Height is now constant at clamp centerline.
D0900676-v2: Height is now constant at clamp centerline.
D0900677-v2: Height is now constant at clamp centerline.
D0900678-v2: Height is now constant at clamp centerline.
D0900679-v2: Height is now constant at clamp centerline.
D0900680-v2: Height is now constant at clamp centerline.
Additional Masses (Upper and Intermediate Mass):
D1001230-v1: Initial release.
D1001229-v1: Initial release.
D0901405-v2: Added vent groove and new notes.
D070333-v2: Added vent groove and new notes.
D080263-v2: Added vent groove and new notes.
Upper Mass:
D070335-v3: Revised design of pitch and roll offsets, lower blade clamps and attachment of additional mass.
D020605-v3: Changed tapped holes for tablecloth stops and additional mass to self-locking helicoil holes. Moved tapped holes for magnet holders to keep BOSEM flags in proper positions.
D080221-v2: Changed tapped and clearance holes so that #8-32 screws are used as blade stops and to attach blade guard to main section.
D020607-v3: Switched positions of pitch and roll offsets, changed pitch offset slot to a cutout and changed cutout and slot sized to match new versions of offsets.
D020653-v2: Added helicoil to screwdrive block.
D1001669-v1: Initial release.
D030139-v2: Increased height, decreased width, cross-sectional area and mass is approximately equal to v1.
D1001699-v1: Initial release.
BOSEM Magnet and Flag Assembly:
D1001695-v1: Initial release.
D1001697-v1: Initial release.
D1001698-v1: Initial release.
D1001794-v1: Initial release.
Lower Blade Library of Clamps:
D0900681-v2: Added 0.0 degree clamps to library.
D020602-v2: Removed channel. Height is now constant at clamp centerline.
D0900682-v2: Removed channel. Height is now constant at clamp centerline.
D0900683-v2: Removed channel. Height is now constant at clamp centerline.
D0900684-v2: Removed channel. Height is now constant at clamp centerline.
D0900685-v2: Removed channel. Height is now constant at clamp centerline.
D0900686-v2: Removed channel. Height is now constant at clamp centerline.
D0900687-v2: Removed channel. Height is now constant at clamp centerline.
D0900688-v2: Removed channel. Height is now constant at clamp centerline.
D020623-v2: Added channel. Height is now constant at clamp centerline.
D0900690-v2: Added channel. Height is now constant at clamp centerline.
D0900691-v2: Added channel. Height is now constant at clamp centerline.
D0900692-v2: Added channel. Height is now constant at clamp centerline.
D0900693-v2: Added channel. Height is now constant at clamp centerline.
D0900694-v2: Added channel. Height is now constant at clamp centerline.
D0900695-v2: Added channel. Height is now constant at clamp centerline.
D0900696-v2: Added channel. Height is now constant at clamp centerline.
Intermediate Mass:
D070334-v3: Moved additional mass from top to sides, attached to side offsets. Desired center of mass location is now lined up with centers of cylindrical offsets.
D070336-v3: Removed holes to attach additional mass on top surface. Desired center of mass location of Intermediate Mass is now lined up with centers of cylindrical offsets. Added scribed lines to align with magnet placement fixture.
D030156-v2: Added helicoil holes to attach additional mass to sides of cylinders; cut off one side of cylinder for weight and balance of Intermediate Mass.
Bottom Mass:
D070337-v5: Corrected magnets and standoffs based on M0900034-v4.

All drawings checked by either Mike Meyer or Janeen Romie.

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