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\u201cAirlock subsystem verification picked up and continues through Friday. Crew equipment interface test is scheduled for Friday and Saturday.\u201d<\/p>\n
The Orbiter Project Office (OPO) at the Johnson Space Center (JSC) noted an actuator issue with the B-Hatch (otherwise known as the side hatch) on last week\u2019s Shuttle Standup\/Integration report (L2), which has since been repaired.<\/p>\n
\u201cOrbiter (USA\/JSC): On OV-103 (Discovery) B-hatch, they were having some problem getting the actuator door closed. It was fixed, but in the process of trouble-shooting the problem, they noticed that one of the four little detent balls that keep the removable handle in place was missing.<\/p>\n
\u201cThe whole actuator will be R&R\u2019d (Removed and Replaced) to get it back into configuration. The other vehicles will be checked to ensure no other balls are missing.\u201d<\/p>\n
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STS-133 Specific Articles: http:\/\/www.nasaspaceflight.com\/tag\/sts-133\/<\/p>\n
The hatch issue wasn\u2019t elevated into an IPR (Interim Problem Report), meaning Discovery remains on a low count of just 25 IPRs in her flow since returning from STS-131, the latest of which \u2013 relating to an false indication on an electrical umbilical in Discovery\u2019s Payload Bay (PLB) \u2013 has since been cleared.<\/p>\n
\u201cIPR-0025 sill connector issue has been isolated to a problem with ROEU (Remotey Operated Electrical Umbilical System) Sys 1 stow indication due to a recessed pin on a connector. Repair and retest were successful.\u201d<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/07\/A323.jpg\" "\\"A323\\"")
Discovery will welcome back her Right Hand (RH) Orbital Maneuvering System (OMS) Pod next week, following the completion of work replacing the faulty helium isolation valve on the Right Reaction Control System (RRCS).<\/p>\n\u201cAt the HMF (Hypergolic Maintenance Facility) on the RH pod, have completed the valve R&R retest. In work on closeouts and structural inspections. The pod comes back to the OPF on July 13,\u201d noted KSC Logistics on the Standup Report, whilst adding the removed faulty valve is now being evaluated for a root cause to the issues during Discovery\u2019s STS-131 pad flow.<\/p>\n
\u201cAt the NSLD (NASA Shuttle Logistics Depot) at KSC, have the helium ISO (Isolation) valve from RPO-103 (Discovery\u2019s Right Hand Pod) that will start TT&E (Test, Teardown & Evaluation).\u201d<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/07\/A4221.jpg\" "\\"A422\\"")
Other processing highlights for Discovery included the completion of work relating to the checks on the small ceramic plugs located along the Payload Bay Door (PLBD) hinge line \u2013 an area that can only be access when the orbiter is inside her OPF. Work is also proceeding to schedule on the mated External Tank and twin Solid Rocket Boosters (SRBs).<\/p>\n\u201cOV-103 (STS-133) Completed the PLBD hinge line ceramic plug R&R. Got the PLBDs reopened,\u201d added KSC Integration on the Standup report. \u201cWill continue with TPS processing, have 78 more bonds to complete for a total of 137 for the flow. In the VAB (Vehicle Assembly Building) on the stack, continuing with the integrated closeouts between the tank and the booster.\u201d<\/p>\n
Those integrated closeouts include leak checks and foam applications to closeout areas of the stack, with one area of slight damage foam damage still under evaluation. Final pull\/plug tests on the intertank region of ET-137 have also been completed, allowing for access scaffolding to be removed.<\/p>\n
\u201cSRB BI-144 \/ RSRM 112 \/ ET-137 (VAB HB-3): L\/R (Left\/Right) S&A leak checks; RH is complete. LH leak check is in work. R\/L Tunnel Cover foam application; Preps continue. RH RT-455 applications in work, LH Bond check readings are next,\u201d added the NTD.<\/p>\n
\u201cL\/R Forward Crossover installation complete. RT-455 next. RH ET Fairing cover next. On hold for damaged SLA (Foam) PR (Problem Report \u2013 damage on fairing support plate, Photos and measurements taken. More disposition to follow). L\/R ET bolt catcher installation complete.<\/p>\n
\u201cL\/R ET AFT Fairing Installation \u2013 Preps for installation continue. Additional foam damage areas were during inspection and require engineering disposition to continue. Inter-tank Adhesion Testing location closeouts are complete and scaffolding is removed.\u201d<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2010\/07\/A44.jpg\" "\\"A4\\"")
Meanwhile, Discovery\u2019s SSMEs head into integrated testing on Wednesday, leading up to torque check results on the LPOTP likely to be known by the end of this week.<\/p>\n\u201cEngine securing continues; SSME\/MPS (Main Propulsion System) integrated testing is scheduled for Wednesday,\u201d added the NTD processing report.<\/p>\n
Following the Program Requirements Control Board (PRCB) decision to swap the engine positions for two of Discovery\u2019s engines, engineers have completed the reinstallation process, with ME-1 now sporting a replacement turbo pump.<\/p>\n
\u201cFollowing the issues with the low pressure LOX turbo pump, they got all three engines back into the engine shop and replaced the pump,\u201d noted Pratt & Whitney Rocketdyne\/KSC on the Standup report. \u201cThey went to the PRCB and re-ordered the engine positions, switching engines #1 and #2.<\/p>\n
\u201cEngine 2044 was put into position 1, Engine 2058 in position 3, and Engine 2048 with the new low pressure pump into position 2. Into securing and into leak checks.\u201d<\/p>\n
The removed LPOTP has since been shipped back to Pratt & Whitney Rocketdyne\u2019s Canoga Park facility in California, where it is undergoing a failure investigation, in order to understand why it suffered from an unacceptably high torque \u2013 which is the first time such an issue has occurred since 13 years ago.<\/p>\n","protected":false},"excerpt":{"rendered":"
With Discovery\u2019s three Space Shuttle Main Engines (SSMEs) now reinstalled on the orbiter, engineers should know by Friday if they have solved the torquing issue with ME-1. The engine \u2013 along with ME-2 and ME-3 due to access issues \u2013 was removed to allow for the replacement of the Low Pressure Oxidizer Turbo Pump (LPOTP) […]<\/p>\n","protected":false},"author":1,"featured_media":29572,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[8116,9051],"class_list":["post-40723","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ssme","tag-sts-133"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40723"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=40723"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40723\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/29572"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=40723"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=40723"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=40723"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}