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\u201cThe Agency (Level I) FRR for STS-130\/20A is next Wednesday, January 27, beginning at 08:00 ET (at the Kennedy Space Center).\u201d<\/p>\n
With fine work on the dual solution approach for the Node 3 NH3 (Ammonia) lines now supporting the launch date, Endeavour is on track for three attempts, with the first on February 7.<\/p>\n
However, the subsequent standdown for the Atlas V launch is pending the United Launch Alliance (ULA) setting their target date \u2013 with rumors of a RD-171 engine failure in Russia placing doubt on the scheduled launch, due to commonality with Atlas V\u2019s RD-180 engine.<\/p>\n
\u201cWe have the range February 7th through 9th. KSC still has four days of contingency in their schedule with no issues identified so far,\u201d added FRR information. \u201cThe Atlas schedule is still uncertain but their current plan is to launch two days after STS-130 launch. If we stand down for the Atlas, it will take three days after the Atlas launch to reconfigure to support Shuttle launch.\u201d<\/p>\n
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Endeavour herself isn\u2019t suffering from any major issues on Pad 39A, with the milestone Terminal Count Demonstration Test (TCDT) completed, along with work to install the payload into the cargo bay.<\/p>\n\u201cOrbiter: OV-105 \/ ET-134 \/ SRB BI-141 \/ RSRM 109 (Pad-A): The team continues to work toward the targeted launch date of February 7th. The Terminal Count Demonstration Test (S0017) was successfully completed,\u201d noted processing information on L2.<\/p>\n
\u201cNew IPR (Interim Problem Report) 0046: The S0017 torque test was not performed when the SRGA (SRB Rate Gyro Assembly) was powered. (Engineers) will find a convenient time to perform this test. Constraint is S1287, final snap shot for flight controls. Troubleshooting for IPR 0044 (mid deck flight light #1 is dimly lit when powered on by MO13Q Mid deck floods) in work.\u201d<\/p>\n
Also completed in the recent pad flow was the payload Interface Verification Test (IVT) (S0600), IMU (Inertial Measurement Unit) calibration, Aft closeouts (continuing), and LOX storage tank sampling. Most of the weekend work was related to payload closeouts and Payload Bay (PLB) door closure for flight.<\/p>\n
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Work on completing Endeavour\u2019s modifications relating to the addition of sensors to record data on the Main Engine Ignition (MEI) Acoustic and SSME (Space Shuttle Main Engine) Ignition Overpressure (IOP) Environments is also on track.<\/p>\n\u201cThe OV-105 (Endeavour) NASA Vehicle Manager reports that off-line processing for the main engine ignition acoustic sensor modification on the left hand OMS pod stinger doors is nearing completion,\u201d noted the NASA Test Director.<\/p>\n
As per usual with Flight Readiness Reviews, a couple of previously unknown items of interest for the mission were noted, the first of which related to logistical transfers that will be carried out during STS-130.<\/p>\n
\u201cKudos to the USA-FCE (United Space Alliance) team for their work preparing candidate hardware and getting them into ISS Lockers for stowage above Volume D,\u201d added notes. \u201cIt was originally thought that there was not enough performance to send these to the ISS. If the performance margin is good, these will go up on STS-130\/20A.\u201d<\/p>\n
STS-130 Specific Articles: http:\/\/www.nasaspaceflight.com\/tag\/sts-130\/<\/p>\n
An additional element of flight rationale was also noted via documentation related to a 20 year old paperwork issue associated some small bolts that have a history with Endeavour\u2019s OMS (Orbital Maneuvering System) Pod.<\/p>\n
\u201cA recent issue being worked involves bolts used in the OMS engine area to secure small clamps and secondary structures,\u201d noted FRR and Program Control Requirement Board (PRCB) notes. \u201cThis is a non-traceable part that can be made by many manufacturers.<\/p>\n
\u201cRoughly 20 years ago, a Government-Industry Data Exchange Program (GIDEP) was put out against Lawrence Engineering for producing substandard\/non-certified bolts. All of these were thought to have been purged, but some have been discovered at WSTF (White Sands Test Facility) \u2013 and at least one was used on the OMS engines for OV-105 (Endeavour).<\/p>\n
\u201cThis issue is being vigorously pursued. Flight rationale will be developed for STS-130\/20A.\u201d<\/p>\n
STS-131 Latest:<\/p>\n
Discovery is set to launch just a month after Endeavour returns from STS-130, setting a challenge for engineers and managers alike. At present, the bulk of the departmental FRRs for STS-131 are due to take place next week, prior to the launch of STS-130.<\/p>\n
STS-131 Specific Articles: http:\/\/www.nasaspaceflight.com\/tag\/sts-131\/<\/p>\n
Such is the tight schedule between STS-130 and STS-131, even the SSP Level II and Agency Level I FRRs may actually overlap \u2013 as opposed to the usual week of separation.<\/p>\n
\u201cSSP and Agency FRR dates for STS-131\/19A are being discussed. The schedule is very tight at this point,\u201d noted Shuttle Program manager John Shannon on the Shuttle Standup\/Integration report (L2). \u201cThese reviews may end up back-to-back.\u201d<\/p>\n
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SSP managers are more than capable when it comes to two launches in close proximity, as was seen with the STS-125 and STS-127 launch dates \u2013 when Atlantis launched to service Hubble, ahead of Endeavour being stood down from supporting LON-400 (Launch On Need) requirements and launched on her ISS mission the following month.<\/p>\nSTS-131 is slightly different, as Discovery won\u2019t be on the pad \u2013 which would be impossible with only one shuttle pad now remaining \u2013 by the time Endeavour launches on STS-130, although the schedule is on track to support the March 18 launch date.<\/p>\n
The next milestone for this mission will be in the Vehicle Assembly Building (VAB) where mating of STS-131\u2019s External Tank (ET-135) with the twin Solid Rocket Boosters (SRBs) will take place this week \u2013 although it has been moved down by one day to Tuesday.<\/p>\n
\u201cSRB stacking continues. The left-forward unit is in work. ET-135 processing continues with ET mate January 26,\u201d noted processing information, as processing with Discovery herself is working no major issues.<\/p>\n
\u201cIn the OPF (Orbiter Processing Facility), the APU (Auxiliary Power Unit) catch-bottle hand valve R&R is complete. (This is a time and cycle requirement). The Payload Bay is now open. \u201cWLE (Wing Leading Edge) micro-TAL installation and checkout continue.<\/p>\n
\u201cThe SSME (Space Shuttle Main Engine) TVC (Thrust Vector Control) checkout and flight-control final cycling was completed. PLBD (Payload Bay Door) closure for rollover was completed. The strong-backs are removed.\u201d<\/p>\n
The pace doesn\u2019t let up after STS-131, with Atlantis due back in action on May 14 with the launch of STS-132. Atlantis is on track with her processing milestones, while the mission\u2019s External Tank (ET-136) is tracking a February 24 delivery date from the Michoud Assembly Facility (MAF) in New Orleans.<\/p>\n
L2 members<\/em><\/em>: Documentation \u2013 from which the above article has quoted snippets \u2013 is available in full in the related L2 sections, now over 4000 gbs in size<\/em><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
With less than two weeks until STS-130\u2019s launch with Endeavour, managers are already setting up the readiness meetings for STS-131 \u2013 which is scheduled to launch the following month with Discovery. With Flight Readiness Reviews (FRRs) overlapping the missions, engineers and managers will be working at full pace for several weeks. STS-130: Managers are over […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":[3610,9183,9184],"class_list":["post-40885","post","type-post","status-publish","format-standard","hentry","category-news","tag-frr","tag-sts-130","tag-sts-131"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40885"}],"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=40885"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40885\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=40885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=40885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=40885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}