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However, SpaceX opted to aim for the early 2014 opportunity afforded to them in the busy Visiting Vehicle schedule.<\/p>\n
As a result, the CRS-3 Dragon realigned her preparations for a mission that had an available berthing window ranging from January 17, 2014 through February 16.<\/p>\n
Unfortunately, a coolant loop failure on the ISS \u2013 which ultimately required two EVAs over the Christmas period to fix \u2013 delayed Cygnus, causing a knock on effect for Dragon. The Cygnus CRS-1\/ORB-1 mission eventually arrived at the ISS in January.<\/p>\n
A realigned February 22 launch date target for Dragon\u2019s CRS-3 mission held firm for a number of weeks, prior to further internal refinement that resulted in a NET (No Earlier Than) target of March 1 on the schedule.<\/p>\n
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![\"Z7\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2014\/03\/Z72.jpg\")
As per the usual scenario of continually evaluating launch targets, considerations included Dragon\u2019s EOM (End Of Mission) requirement of returning to Earth in daylight, per the preference of recovery operations, along with the flow timeline, as poor weather across the United States delayed the arrival of the Falcon 9 v1.1 core stage at Cape Canaveral.<\/p>\nWhile the flow could have supported a new NET as early as March 12, the Station\u2019s Visiting Vehicle schedule recommended March 16 as the opening launch target.<\/p>\n
Processing towards that latest target was on schedule, with the Falcon 9 v1.1 and Dragon enjoying a ride out to the launch pad at SLC-40 for a Static Fire test.<\/p>\n
This was conducted on Saturday, providing a launch dress rehearsal and a health check of the Falcon 9\u2019s Merlin 1D engines \u2013 which were fired for a short burst to provide engineering data to the SpaceX team.<\/p>\n
![\"BieOk8OCEAAB8CI-2\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2014\/03\/BieOk8OCEAAB8CI-2.jpg\")
The vehicle was then rolled back into the hanger at the launch complex, allowing for final processing and preparations for late loading on the Dragon spacecraft.<\/p>\nHowever, on Thursday, SpaceX announced a postponement to the launch of at least two weeks, without providing any specifics.<\/p>\n
\u201cTo ensure the highest possible level of mission assurance and allow additional time to resolve remaining open items, SpaceX is now targeting March 30th for the CRS-3 launch, with April 2nd as a back-up,\u201d noted the company.<\/p>\n
\u201cThese represent the earliest available launch opportunities given existing schedules, and are currently pending approval with the Range.\u201d<\/p>\n
![\"Z98\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2014\/03\/Z98.jpg\")
These considerations would have included the upcoming Atlas V launch with the NROL-67 satellite. Launch from next door\u2019s SLC-41 is currently tracking a March 25 target, which will tie up the Eastern Range around this opportunity.<\/p>\nPer the ISS Visiting Vehicle schedule, a Russian Soyuz is set to launch en route to the Station, also on the 25th.<\/p>\n
While Dragon and Soyuz spacecraft are berthed to a different port on the ISS, Station managers always create a level of spacing between vehicle arrivals at the outpost, for various reasons, not least the need to focus on one vehicle\u2019s arrival at a time.<\/p>\n
![\"Z44\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2014\/03\/Z441.jpg\")
While there is no specific reason as to what caused the delay \u2013 as much as it\u2019s understood to be related to the Dragon\u2019s payload, with CBS\u2019 Bill Harwood claiming there is a contamination issue \u2013 SpaceX did note their vehicle hardware is in good shape. As such, a further delay is unlikely at this time.<\/p>\nFalcon 9 and Dragon had passed the Flight Readiness Review (FRR) stage last week, with only the Launch Readiness Review (LRR) outstanding ahead of the original March 16 target.<\/p>\n
\u201cBoth Falcon 9 and Dragon are in good health; given the critical payloads on board and significant upgrades to Dragon, the additional time will ensure SpaceX does everything possible on the ground to prepare for a successful launch,\u201d the company added.<\/p>\n
Based on the launch window to the ISS moving 24 minute per day, a March 30 launch attempt would likely take place around 11pm local time.<\/p>\n
![\"Z77\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/10\/Z771.jpg\")
The CRS-3\/SpX-3 flight will carry a full launch and return complement of 1,580kg\/3,476lb of payload, an increase from the previous limit of 800kg, afforded by the increased upmass capabilities of the Falcon 9 v1.1.<\/p>\nFor launch, Dragon will carry a record of one GLACIER and two MERLIN freezers for transporting ISS experiment samples.<\/p>\n
The external payload in Dragon\u2019s trunk includes the Optical Payload for Lasercomm Science (OPALS) \u2013 which will demonstrate high-bandwidth space to ground laser communications, and the High Definition Earth Viewing (HDEV) package consisting of four commercial HD video cameras.<\/p>\n
The CRS-3 mission will also involve the delivery of a replacement Extravehicular Mobility Unit (EMU), allowing for the return of a faulty suit on the same vehicle when it returns to Earth. This spacesuit relay is enabled by a specially built rack inside the Dragon.<\/p>\n
This will be Dragon\u2019s first ride on the upgraded Falcon 9, with the v1.1 set to conduct its fourth flight.<\/p>\n
(Images: SpaceX, and L2)<\/p>\n
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SpaceX made a late postponement to the CRS-3\/SpX-3 mission to the International Space Station on Thursday, citing \u201copen items\u201d that require additional time to remedy. The launch \u2013 which was originally set for March 16 \u2013 will have to wait until the end of the month at the earliest, as Dragon sets her sights on […]<\/p>\n","protected":false},"author":1,"featured_media":30311,"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":[2304,1395,233,316],"class_list":["post-39627","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-crs","tag-dragon","tag-iss","tag-spacex"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39627"}],"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=39627"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39627\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/30311"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=39627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=39627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=39627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}