ROCKET LAB PSC MOTORIZED Lightband MKII, Руководство по эксплуатации

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Copyright PSC 2000781K MkII MLB Operating Procedure Page 15 of 68
6.
Lightband Mechanical Attachment
Step Procedure
Date & Initials
Tech. QA
6.1.1
Ensure the SN on the Upper Ring corresponds to the SN on the Lower Ring.
Record all Lightband info on the cover page. The assembly number and
revision can be found on both the Upper and Lower Rings, typically adjacent
the Motor Bracket Assembly. PSC document
3000224 MLB Training Record
also lists the MLB sizes and numbers.
6.1.2
The Lightband is designed to accommodate 0.25 inch socket head cap (SHC)
screws and small pattern washers (< 0.50 inch OD). Have ready the required
tools and hardware necessary to attach the Lightband to both upper and lower
adjoining structures. See Table 2-3 and Section 14 for equipment.
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6.1.3
Verify the flatness of the Lower Ring
’s adjoining structure complies with the
most recent version of PSC document 2000785 MkII MLB User Manual . See
note 1 below.
Structure Description: _______________________________________
Required Flatness [in]: _________________
Measured Flatness [in]: _________________
6.1.4
Verify
the flatness of the Upper Ring’s adjoining structure complies with the
most recent version of PSC Document 2000785 MkII MLB User Manual. See
note 1 below.
Structure Description: _______________________________________
Required Flatness [in]: _________________
Measured Flatness [in]: _________________
1) Measured Flatness is the final assembled flatness, not the flatness of the individual part. Assembly will
often warp structures so it is imperative to measure flatness after assembly. Measurement does not have to
be real-time. Referencing a prior inspection is acceptable provided it was for the identical configuration.
Step Procedure
Date & Initials
Tech. QA
6.1.5
After attachment, the Lower and Upper Rings must meet the circularity
requirement (may be specified as bolt circle tolerance) in PSC document
2000785 MkII MLB User Manual and Step 6.1.13. Plan out the method that will
be used to ensure the requirement is met. Also ensure the circularity of both
adjoining structure bolt circle patterns is known. Forcing the Lightband to align
with non-circular mounting holes will cause an anomaly. Some alignment
method examples are
•
Using flat head alignment screws into an adjoining structure with
threaded holes (
structure’s bolt circle circularity must be known to meet
requirement)
•
Using 3X or more gage pins to maintain circularity during attachment
(structure’s bolt circle circularity must be known to meet requirement and
thru holes must of similar size as Lightband, ~.281 in)
•
Using calipers or a CMM to measure diametric distance across Lower
Ring and Upper Ring flanges after attachment.
What method will be used to ensure circularity? _____________________
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