{"id":41373,"date":"2008-06-15T23:22:58","date_gmt":"2008-06-15T15:22:58","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/study-reveals-a-six-rs-68-and-5-5-segment-booster-for-ares-v-2\/"},"modified":"2008-06-15T23:22:58","modified_gmt":"2008-06-15T15:22:58","slug":"study-reveals-a-six-rs-68-and-5-5-segment-booster-for-ares-v-2","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/study-reveals-a-six-rs-68-and-5-5-segment-booster-for-ares-v-2\/","title":{"rendered":"Study reveals a six RS-68 and 5.5 segment booster for Ares V"},"content":{"rendered":"

The mammoth Ares V is continuing to grow \u2013 on paper at least \u2013 to olympic proportions to close the performance shortfall in the Ares architecture.The new vehicle \u2013 that is officially classed as a study option, but touted as the new baseline \u2013 shows an Ares V with two stretched 5.5 segment Solid Rocket Boosters, an even longer Core Stage powered, now by six RS-68 main engines, and a 10 meter diameter Upper Stage and matching Payload Fairing.
\n\"\"<\/em><\/p>\n

**The most comprehensive collection of Shuttle, Ares, Orion and ISS related presentations and mission documentation, plus expansive daily processing documentation and updates are <\/em>available to download on L2<\/em> **<\/em><\/p>\n

\"\"<\/em>All of this article is based on documented L2 information. For an overview of how L2 works, <\/em>**click here for sample video**<\/em><\/p>\n

**ARES I LIVE UPDATE PAGES**<\/em><\/p>\n

**ORION\/Exploration Vehicles LIVE UPDATE PAGES**<\/em><\/p>\n

**ARES V \/ Mars LIVE UPDATE PAGES**<\/em><\/p>\n

**EXPLORATION ALTERNATIVES (DIRECT, EELV) PAGES**<\/em><\/p>\n

**ALL NASASpaceflight.com CxP Articles**\n<\/p>\n

Ares V.5:<\/em> <\/p>\n

Spaceflight<\/path>Technology News<\/path>SpaceX launch tickets<\/path>\n

(adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n

Ares V will be the required workhorse providing Constellation with the ability to leave Low Earth Orbit (LEO) in their exploration architecture.<\/p>\n

The previous Ares V baseline was a 10 meter core, powered by 5 RS-68 engines from the Delta IV vehicle \u2013 flanked by two 5.0 segment Solid Rocket Boosters as to be used on the Ares I\u2019s First Stage. The J-2X powered Upper Stage had already changed from 8.4 meters in diameter to a 10 meter stage, flush with the Core Stage.<\/p>\n

However, the earlier Ares-V configuration has been suffering from an inability to close the performance requirements for being able to heavy lift the four-man Altair Lunar Lander being planned. With Ares I lifting the Orion spacecraft, the Ares-V needs to push 75.1 mT of payload through Trans-Lunar Injection (TLI) but was only able to push 64.6 mT.<\/p>\n

\"\"This new more powerful configuration, identified as the \u2018LV 51.00.48\u2019 is now able to put 71.1 mT through TLI. While this configuration still can not reach its targets, this is a clear improvement towards closing the performance requirements NASA has for the Lunar architecture.<\/p>\n

Each new reusable 5.5 segment SRB, will contain over 1.5 million pounds of propellant which will produce a peak of 3,774,000 million lbs of thrust and will have a vacuum Isp of 275.5 seconds. The 38 percent larger SRB\u2019s will burn for 116 seconds \u2013 a full 8 seconds shorter burn time than Space Shuttle \u2013 before being jettisoned.<\/p>\n

They feature a new \u2018333-07 Trace\u2019 PBAN solid propellant mix derived from that currently used by the Shuttle, although there is still the option to go to a new HTPB mix if the trade studies are favorable.<\/p>\n

To accommodate the new lengthened boosters, the Liquid Hydrogen Tank on the Core Stage has been stretched by 190.3\u201d. Together with a proportional stretch to the Liquid Oxygen Tank this growth puts the new baseline vehicle at 381.1 ft tall \u2013 nearly 20 feet taller than the old baseline.<\/p>\n

To save weight, this version of Ares V assumes all non-pressurized structures on the Core Stage will be built out of new IM7 composite materials instead of more traditional Aluminum-Lithium alloy.<\/p>\n

The 6 RS-68 engines powering the Core will fly at 108 percent power levels (6 percent higher than used on Delta-IV currently) and will each produce 702,055 lbs of thrust and have an Isp of 365 seconds at sea level and will have 797,000 lb of thrust and will have an Isp of 414 seconds in a vacuum.<\/p>\n

Total expected burn time for the Core will be 303 seconds and the 6 main engines will produce a maximum of 4.17G during the launch. The EDS will likewise be constructed out of mostly composite materials.<\/p>\n

The J-2X engine will burn at the 100 percent power level for the orbital insertion burn, but will burn at the 81 percent power level for TLI. The reduced thrust optimizes the Isp for the mass-critical TLI burn. The insertion altitude has been raised from 120 nmi to 131.5 nmi circular.<\/p>\n

Total roll out weight with the crawler and the MLP (Mobile Launch Platform) will be approximately 18 million lbs, which exceeds the capability of the existing crawlerway rated for 16.8 million lbs. The ability for Ares V to remain within its budget targets is now considered a 4\u00d74 risk on the standard 5\u00d75 risk matrix.<\/p>\n

 <\/p>\n

Ares I Preliminary Design Review (PDR) Latest:<\/em> <\/p>\n

Meanwhile, news from the Ares I PDR shows the Mobile Launcher (ML) will have to be tweaked, as a new drift analysis shows that the vehicle \u2013 or its plume \u2013 could impact the tower during climbout. Engineers have also been able to shorten the first stage by 8 inches at the instrumentation bay. <\/p>\n

The currently favored mitigation approaches \u2013 still undergoing a trade study \u2013 for thrust oscillation will add around 500 lbs to Orion for shock mounting on the crew seats and vital components. Thrust oscillation is now categorized as a 5\u00d74 risk for the upper stage. <\/p>\n

The Loss of Mission (LOM) probability is calculated at 1:441, and the Loss of Crew (LOC) at 1:1563. The target for LOM is 1:500, and the minimum for LOC is 1:1000 with a goal of 1:2000. <\/p>\n

Constellation will also aim to shift to SI metric measurements after PDR. The ISS variant of Ares I is designated as a \u2018transition\u2019 vehicle, with major systems in metric and smaller subsystems in Imperial.<\/p>\n

The goal is for lunar missions to \u2018fly metric.\u2019 However, such an undertaken may be shot down by associated cost risks to the program.<\/p>\n

This article is part 6 of a new series of Ares\/Orion articles based on documentated engineering processes being carried out on the vehicles at this time. Click for: <\/em>**Part 1**<\/em> \u2013 <\/em>**Part 2**<\/em> \u2013 <\/em>**Part 3**<\/em> \u2013 <\/em>**Part 4**<\/em> <\/em>**Part 5**<\/em><\/p>\n

\"\"Selection of L2 Resources For Ares I, V and Constellation: <\/em><\/p>\n

Ares V (5.5\/6xRS-68) Presentation. Orion Parachute Vehicle Images. Latest Risk Matrix for Ares. SI Unit Directive Document. CxP PMR08 Manifest. PDR and associated notes from CPCB meeting. Full (and very expansive) list of current Ares\/Orion mass and status report. Ares I \u2018Parasorber\u2019 TO migitation hardware presentation and animation. Orion Parachute Test Vehicle (PTV) Photographs.  <\/p>\n

110mb worth of Ares I-X Weekly Test Presentations (Ares I-X, J2-X etc. up to end of April) The Orion LIDS (Low Impact Docking System) Section (Images, Videos, Engineering Notes). Hi Res Images of Ares I in the VAB. Ares I-X Integrated Milestone Charts. Ares I Thrust Oscillation Focus Team Status Presentations (over 50mb \u2013 includes DTO on Shuttle missions), Ares I-X Global Buckling Status Presentation, Ares I \u2013 Launch Pad Stabilization and Damping Presentation, Ares I: Purge\/Vent\/Drain and Vehicle Access Presentation.<\/em><\/p>\n

Ares Tilt Up Umbilical Arm (TUUA) Test \u2013 Video, Ares\/Orion Comm and Tracking Presentation, Ares I Nozzle Extension Update Presentation, Ares\/Orion Integrated Stack TIM Summary (Major Issues) Presentation, Orion Land vs Water Landing Update + Crew Survival (post 36 hrs) Presentations.<\/p>\n

Altair Overview Presentation. Ares I Risks and Status. Ares I-X Booster Recovery Images and Video. Ares I-X Pad Images. Ares I-Y Mission Overview Video (50mb \u2013 Superb).  Orion Lunar Transit CGI Video. (Several more videos, including first video of Orion splashdown).   <\/p>\n<\/p>\n

\"\"Orion Rendezvous with the ISS CGI Video, plus AERCam Inspections. Ares I Thurst Oscillation Update Section.  Images of completed PA-1 boilerplate Command Module at LaRC.  CxP Planning for Architecture Closure \u2013 Feb 19. Ares V Overview Presentations. Other Major CxP Updates for Feb (List restricted to L2).
\n<\/em>
\nOrion 607 Overview Presentation (Jan 08), Constellation Program Status\/Budget and new Manifest to Orion 20 Presentation (Jan, 08). Michoud Transition to Ares I\/V (Jan 17, 08). Several MLAS (Max Launch Abort System) Presentations. Over 60 Hi Res Images of Orion Mock-up at JSC (Hatch, Seats, Flight Deck) \u2013 December. <\/em> <\/p>\n

Lunar Habitat Assembly. PRCB Presentations on hardware and infrastruction transition (from Palmdale to MLP Park) \u2018Follow live\u2019 Lightning Towers Construction images. Latest Mobile Launcher details. Orion\/Ares I\/Delta IV Heavy NEO Feasibility Study (Video). Constellation EVA Study Presentation. Superb Gene Kranz address to CxP workforce (Apollo to Orion feature) video. MOD \u2018LEO to Mars\u2019 presentations.<\/em><\/p>\n

Superb Ares I Launch Ascent, Pad Abort Test CGI Videos (three). Integrated Stack (IS) Technical Interchange Meeting (TIM) notes \u2013 Nov 6 to Nov 15. The full \u20188th Floor News\u2019 \u2013 Constellation Update (performance issues) \u2013 Nov 5. Ares I Mobile Launcher PMR.<\/p>\n

\"\"\u2018Proposed\u2019 Ares I SRBSF (Mini VAB) and graphic. LSAM (LDAC-1) Video and Images. Several Constellation All Hands Videos and Presentations. Ares I Pad Rollercoaster (Old and New presentation and slides \u2013 the very cool \u2018CGI ride on the Ares pad coaster\u2019 video. Ares I VAB \u2018In-Line\u2019 Stacking presentation slides.<\/em> <\/p>\n

<\/em>Presentation of Ares\/Orion impacts relating to Shuttle manifest acceleration. Ares I Interstage diagrams. Ares V Super Crawler. Ares I Launch Pad images (ML etc.) Hi Res images of Ares I-X Upper Stage. Orion 606-7 Data Updates. Updates Constellation launch schedule through to Orion 15. Orion Seat test photos. New ML Graphic and info. New Ares V graphic and baseline data. Large collection of hi res Orion paracute drop tests. SIX Part Series of Ares I Upper Stage Graphical Overviews. DAC-1C DDD Vast Slides on Vehicle Design. ATK First Stage Presentation. 39B Lightning Towers Slides. DAC-1C Departure points to DAC-2 Upper Stage Graphcs (Many Changes).<\/em><\/p>\n

Orion\/CEV Display Layout Presentation (40 pages). ATK figures on the 5-Seg Booster weight for CLV. Weather Shield (Rain Shield) for Orion on the pad. New Super hi-res images of Ares I. ATK Cutaway graphics of Ares I \u2013 perspective and axonometric. Ares I\/Orion CxP 72031 Requirements Validation Matrix Information. CEV Paracute Assembly System (CPAS) Presentation.<\/p>\n

Orion Launch Abort System (LAS) overview presentation. Changes to Ares I Upper Stage \u2013 expansive details and data. Ares I\/Orion CxP 72031 Requirements Validation Matrix Information. CLV Umbilical Trade Matrix XLS. Vehicle interfaces for the DAC 1C version of Orion Ares. Ares I-X Test Flight Plan (full outline) Presentation. Ares I-X timeline and modification expanded info. Ares I Reference Trajectory. Boeing\u2019s STS to Ares \u2013 Lessons Learned Presentation. CLV DAC-1C (Changes to CLV Upper Stage).<\/p>\n

\"\"Ares I-X: Four Seg+Dummy \u2018Tuna Can\u2019 stage. Ascent Developmental Flight Test Presentation. CLV Pad 39B Handover Info and Latest. New images of CLV on top of new MLP and LUT. Lockheed Martin CEV\/Orion Updates. ATK figures on the 5-Seg Booster weight for CLV.
\n <\/p>\n

90 Minute Video of Constellation all hands meeting. Escape System Trade Study Presentation. CEV-CLV Design Analysis Cycle Review (DAC-2) Presentation. Flight Design and Dynamics Division CEV update. CLV Mono-propellant RCS system. CEV pressurisation system review. CLV\/CEV Configuration Images. The 2\u00d73 Seg SRB Crew Launch Vehicle Option Presentation\u2026<\/p>\n

\u2026.plus much more (L2 Constellation over 180,000mb in size). <\/p>\n","protected":false},"excerpt":{"rendered":"

The mammoth Ares V is continuing to grow \u2013 on paper at least \u2013 to olympic proportions to close the performance shortfall in the Ares architecture.The new vehicle \u2013 that is officially classed as a study option, but touted as the new baseline \u2013 shows an Ares V with two stretched 5.5 segment Solid Rocket […]<\/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":[],"class_list":["post-41373","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41373"}],"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=41373"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41373\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}