- \n
- SLS Forum Section<\/li>\n
- L2 SLS Section<\/li>\n
- L2 SRB Section<\/li>\n
- Click here to Join L2<\/li>\n<\/ul>\n
The results of the DM tests have allowed ATK to complete the booster\u2019s Preliminary Design Review (PDR) in conjunction with NASA, a milestone review that was conducted well within the planned schedule path for the opening SLS launch in 2017. The booster element for SLS currently enjoys around one year of margin.<\/p>\n
The opening SLS mission, known as Exploration Mission -1 (EM-1), will involve two of the new five segment motors heading to the Kennedy Space Center (KSC) for Booster Integration (BI) processing, with the flow almost mirroring that used during the 30 year career of the Space Shuttle.<\/p>\n
Company News
<\/path>Spaceflight history books <\/path>Aerospace industry analysis <\/path>\n (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n
Click here for 100s of News Articles on the SRBs: http:\/\/www.nasaspaceflight.com\/tag\/srb\/<\/p>\n
\u201cThe booster PDR was successful and speaks to the importance of a collaborative design process with our NASA customer\u201d noted Fred Brasfield, ATK vice president, Next-generation Booster.<\/p>\n
![\"ATK](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/05\/Z61.jpg\" "\\"ATK")
With the successful completion of PDR, the SLS booster team at ATK can now advance the design toward the Critical Design Review (CDR). This review will come after the next static fire involving QM-1.<\/p>\nDespite a slight slip in the schedule \u2013 mainly related to an issue with the aft segment of the QM-1, which was found to have about a two foot-wide area where propellant had debonded from the inside of the segment wall \u2013 the QM-1 segments are now building up at the test site at Promontory, Utah.<\/p>\n
At present, engineers have both the forward and center segments being placed into position at the home of the booster test firings.<\/p>\n
SLS Advanced Booster:<\/p>\n
The five segment boosters will continue to provide the bulk of SLS\u2019 launch power during first stage flight through into the second half of the 2020s.<\/p>\n
Following that, SLS will receive an additional boost via the addition of \u201cAdvanced Boosters\u201d, enabling SLS to evolve to a launch vehicle capable of lofting 130mT of payload \u2013 deemed a requirement for missions to Mars.<\/p>\n
![\"Liquid](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/05\/Z91.jpg\" "\\"Liquid")
Several companies are in the early stages of developing their proposals under NASA\u2019s SLS Advanced Booster Engineering Demonstration and\/or Risk Reduction (ABEDRR) procurement, ranging from solid to liquid options \u2013 such as Dynetics Inc.\/Pratt & Whitney Rocketdyne (PWR), who are proposing the use of the famous Saturn V F-1 engines to advance SLS\u2019 capability to launch payloads of up to 150mT to orbit.<\/p>\nATK\u2019s own proposal \u2013 as outlined in a presentation acquired by L2 \u2013 builds on their legacy with the four and five segment boosters, with a motor that is \u201cadvanced\u201d on several levels, by \u201cprovid(ing) NASA the capability for the SLS to achieve 130 mT payload with significant margin, utilizing a booster that is 40 percent less expensive and 24 percent more reliable than the current SLS booster.\u201d<\/p>\n
Click here for SLS News Articles: http:\/\/www.nasaspaceflight.com\/tag\/hlv\/<\/p>\n
![\"Solid](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/05\/Z63.jpg\" "\\"Solid")
The company\u2019s proposal includes a higher ISP density of the propellent, boosting payload performance by nearly 25,000lbm, yet saving $9.2m in costs per booster. With the increased operating pressure, improved propellant, tailored thrust profile, increased expansion ratio all combine to provide a 15.1mT boost to the SLS\u2019 payload capability.<\/p>\nAround six months into the development process, ATK\u2019s Advanced Booster NASA Research Announcement (NRA) team is working to overcome key technological challenges and reduce the overall risk posture of an Advanced Booster.<\/p>\n
According to ATK, some of the current Advanced Booster tasks are being worked on by the Propellant\/Liner\/Insulation (PLI) Integrated Product Team (IPT), who are tackling the challenge of developing a high-performance, low-cost PLI system.<\/p>\n
![\"ATK](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2013\/05\/Z51.jpg\" "\\"ATK")
Not unlike testing different mixes of paint at a hardware store, the PLI IPT are busy establishing a design of experiments (DOE) matrix, cooking up 66 unique propellant mixes to test candidate propellant formulations for burn rate performance and mechanical property characteristics.<\/p>\nATK note that several \u201cfamilies\u201d of solid propellant formulations are being evaluated in the DOE, with multiple variations within these families undergoing testing to select the best formulation within each family to pursue further testing within larger scale mixes.<\/p>\n
The team working on the mixes include expert propellant chemists Ingvar Wallace, Jay Shuler and Michael Smith, who are attempting to select the best mix by the early part of this summer, ahead of the favored propellant formulation being tested in the NRA\u2019s 92-inch diameter integrated static test in early 2015.<\/p>\n
Lead Image: Screenshot from the amazing 220mb super slow-mo DM-3 Five Seg Motor Ground Test Video \u2013 available in L2 \u2013 LINK).<\/p>\n
(Other Images: Via ATK, NASA and L2 content from L2\u2019s SLS specific L2 section, which includes, presentations, videos, graphics and internal \u2013 interactive with actual SLS engineers \u2013 updates on the SLS and HLV, available on no other site.)<\/p>\n
(L2 is \u2013 as it has been for the past several years \u2013 providing full exclusive SLS and Exploration Planning coverage. To join L2, click here: http:\/\/www.nasaspaceflight.com\/l2\/)<\/p>\n","protected":false},"excerpt":{"rendered":"
ATK are making good progress on both the initial five segment boosters, set to launch with the opening launches of the Space Launch System (SLS), and the Advanced Boosters that may provide yet more power to the Heavy Lift Launch Vehicle (HLV) in the late 2020s. SLS Five Segment Booster: Following the success of […]<\/p>\n","protected":false},"author":1,"featured_media":30293,"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":[4144,9034,624,7806],"class_list":["post-39861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-atk","tag-hlv","tag-sls","tag-srb"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39861"}],"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=39861"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/39861\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/30293"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=39861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=39861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=39861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}