File talk:Vestibule Wall - Bolt.jpg

Background
Critical geometric features and dimensions are taken from SSP 41004J “CBM to Pressurized Element ICD”, several NASA Execute Packages, technical papers found in the NTRS, and many on-orbit photographs stored in the National Archives. Ancillary features and details have been simplified or omitted for clarity. Drawing is not to a scale of uniform precision.

References used to create the figure (notes and citations are below):


 * 1) SSP-41004J “Common Berthing Mechanism to Pressurized Elements Interface Control Document Part 2”, National Aeronautics and Space Administration/Johnson Space Center, Houston, Texas (October 25, 2005).  The ICD is authoritatively called by the spec as being applicable in its entirety.  Referred to below as “the ICD”.
 * 2) T683-13850-3, “Common Berthing Mechanism Assembly Qualification Test Report”, Boeing Defense and Space Group, Missiles and Space Division, Huntsville, AL (October 8, 1998).  Referred to in the notes as “the AQT”.
 * 3) NSTS photographs of assembly and on-orbit operations in the National Archives (e.g., //catalog.archives.gov/search?q=common%20berthing%20mechanism&f.materialsType=photographsandgraphics).  All NSTS photographs are now in the archives, including many previously published on neither the NASA website nor on the new Flikr feed.  Where some specific photograph is referred to, a NASA photograph designator is used.
 * 4) ISS photographs of assembly and other on-orbit operations in the NASA collections (https://www.flickr.com/photos/nasa2explore/).  Where some specific photograph is referred to, a NASA photograph designator is used.  Few, if any, of the ISS Expedition photographs are yet available in the national archives. Only a small fraction appear to have been published as yet on the Flikr feed.
 * 5) The Kennedy Space Center media archives (//mediaarchive.ksc.nasa.gov/#/Home/), referred to below as “KSC”.
 * 6) Sievers, Daniel E. and Harry K. Warden, “International Space Station Powered Bolt Nut Anomaly and Failure Analysis Summary”, (NTRS #20100021933), referred to below as “Sievers”.
 * 7) JSC-48503, “International Space Station ISS/Shttle Joint Operations Book”, National Aeronautics and Space Administration/Johnson Space Center Mission Operations Directorate, Operations Division (28 JUN 05), referred to in the notes as “Joint Ops”.  See  //www.nasa.gov/centers/johnson/pdf/123838main_iss_shuttle_joint_ops_book.pdf.
 * 8) McLaughlin, Richard J. and William H. Warr, “The Common Berthing Mechanism (CBM) for International Space Station”, SAE (2001), referred to in the notes as “McLaughlin”.
 * 9) NASA/CR-2010-216890 “The Mechanical Performance of Subscale Candidate Elastomer Docking Seals” (NTRS record #20100039390), referred to as “MPS” below.
 * 10) NASA/TM—2012-217722 “A Comparison of Candidate Seal Designs for Future Docking Systems”, (NTRS record #20120015496), referred to as “CCSC”, below.
 * 11) Underwood, Steve and Oleg Lvovsky, “Implementation of Leak Test Methods for the Internation (sic) Space Station (ISS) Elements, Systems and Components” (NTRS #20070022572), referred to below as “Underwood”.

Notes:


 * 1) The diameter of the Powered Bolt circle was taken from ICD Figure 3.1.4.1-21.
 * 2) ) Identification and internal component arrangement of the nut and bolt assemblies were scaled from Figure 1 of Sievers.
 * 3) The shape of the bolt actuator was as shown in Figure 6 of McLaughlin given the enveloping dimensions of ICD Figures 3.1.4.1-9 and -10.  Good views of the backside of the bolt assembly without an actuator are found in KSC photo 2010-3453.jpg.  On-orbit views of installed components are found in 255-STS-STS106-372-019.jpg  and 255-STS-STS101-387-016.jpg (see the National Archives reference, above).
 * 4) The enveloping dimensions of the nut were established by ICD Figure 3.1.4.1-22, generally confirmed by reference to 255-STS-STS097-330-011.jpg, 255-STS-STS106-372-019.jpg, and 255-STS-STS101-387-016.jpg (see the National Archives reference, above).
 * 5) Characteristics of the cbm/cbm seal cross-section were based on Figure 2 of the MPS,  Figure 4 of the CCSD and Figure 5 of Underwood, but using the bead configuration shown in Figure 2 (sic) on page 185 of the Joint Ops.
 * 6) Gross dimensions and profiles of the thermal standoff and strike plate were taken from ICD Figure 3.3.10-3 and -6 and, respectively. The internal cross-section of the standoff is an interpretation based on Foster(2004).  Depiction as a helical spring is intended to convey Foster’s choice of words: the forces might be produced by an elastomer.

Not fred999 (talk) 19:01, 29 February 2020 (UTC)