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The test vehicle had several differences from the actual proposed system. The main difference was that the four propulsion rockets were not located in the forward fairing, but in a boost skirt located at the bottom of the test vehicle. The rockets in the fairing were represented by geometric dummies.
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The MLAS was designed with the aim of reducing the height of the Orion/Ares I stack while also reducing weight and center-of-gravity issues of a traditional LES. The bullet-shaped MLAS was also expected to provide better aerodynamic qualities during the first two minutes of flight, reducing stresses
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docking ring assembly. Second, the necessity to fire multiple motors (LES uses one motor and multiple nozzles) simultaneously for an abort decreases the theoretical reliability of the launch abort system by introducing more failure modes.
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There are several drawbacks to MLAS. First, the bullet-shaped protective cover would have to be modified and reinforced to allow for the use of the solid-rocket motors, something not needed with the LES, which bolts on top of the
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minutes of flight, with the MLAS being jettisoned, along with the service module's fairing panels, after the solid-rocket first stage was jettisoned. If implemented, the Orion/Ares I stack would have resembled the towerless
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The propulsion thrust was not balanced between the rockets by a manifold system, contrary to what was foreseen with the actual system.
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Wood, Eric M. (2010). "Reliability
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Like the existing LES, the MLAS would provide protection to the Orion spacecraft crew during the first
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Please help update this article to reflect recent events or newly available information.
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Launch Escape
Systems and Emergency Recovery: Historical Overview and Future Prospects
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Hautaluoma, Grey; Edwards, Ashley; Henry, Keith; Powell, Rebecca (June 18, 2009).
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Hautaluoma, Grey; Edwards, Ashley; Henry, Keith; Powell, Rebecca (July 8, 2009).
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Hautaluoma, Grey; Edwards, Ashley; Henry, Keith; Powell, Rebecca (July 8, 2009).
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were used as the primary form of escape for the astronauts who flew on the ten
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A "pad abort" flight test of the Max Launch Abort System was performed at
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The MLAS concept was dropped with the transformation of the
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on
December 6, 2007, the proposed MLAS used four existing
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Designed by NASA engineers and reported on the website
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malfunction during launch required an immediate abort.
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Proposed pusher alternative to the Orion escape rockets
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International
Reference Guide to Space Launch Systems
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521:"Max Q: The Ultimate Challenge of Space Flight"
296:(LES) that was planned for use by NASA for its
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615:: CS1 maint: DOI inactive as of August 2024 (
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543:"NASA's Wallops Flight Facility and the MLAS"
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545:. NASA/Wallops Flight Facility. July 1, 2009
366:stack used between 1965 and 1966, in which
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120:This article includes a list of general
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680:. Springer-Praxis. pp. 192–194.
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434:from websites or documents of the
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45:This article has multiple issues.
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383:Orion Multi-Purpose Crew Vehicle
276:MLAS test vehicle flight profile
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409:on July 8, 2009, at 10:26
53:or discuss these issues on the
1119:NASA Authorization Act of 2005
1083:Max Launch Abort System (MLAS)
797:. NASA/Wallops Flight Facility
760:. NASA/Wallops Flight Facility
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837:. NASA. NASA Release M09-110.
564:Isakowitz, Steven J. (2010).
1099:Vision for Space Exploration
783:. NASA. NASA Release 09-156.
732:. NASA. NASA Release 09-156.
300:spacecraft in the event an
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634:. NASA. pp. 112–115.
568:. AIAA. pp. 357–359.
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523:. NASA. October 29, 2019
379:Crew Exploration Vehicle
854:Max Launch Abort System
676:Shayler, David (2001).
407:Wallops Flight Facility
282:Max Launch Abort System
141:more precise citations.
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989:Spacecraft
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920:(Jul 2009)
708:August 15,
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457:August 15,
421:References
374:missions.
313:Huntsville
193:improve it
122:references
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650:cite book
381:into the
209:July 2009
197:verifying
147:July 2009
56:talk page
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801:July 11,
764:July 11,
1160:Commons
980:Jupiter
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317:Thiokol
315:-built
191:Please
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953:Ares I
795:"MLAS"
758:"MLAS"
704:. NASA
684:
657:Check
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501:. NASA
453:. NASA
372:Gemini
360:Gemini
302:Ares I
124:, but
1001:Orion
364:Titan
329:max Q
298:Orion
968:Lite
917:MLAS
803:2009
766:2009
710:2024
682:ISBN
663:help
636:ISBN
617:link
570:ISBN
551:2024
529:2024
507:2024
485:2024
459:2024
403:NASA
337:LIDS
286:MLAS
280:The
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