FREE ELECTRONIC LIBRARY - Abstract, dissertation, book

Pages:     | 1 ||

«ABSTRACT On August 9, 2012 the Morpheus 1.5A vehicle crashed shortly after lift off from the Kennedy Space Center. The loss was limited to the ...»

-- [ Page 2 ] --

6. FREE FLIGHTS A. Risk Posture Heading into free flights at KSC, it was important for the project to maintain a consistent risk posture. The vehicle was built from the beginning as a single-string prototype vertical take-off and landing vehicle. That approach enabled the project to pursue lean development and make advances in design, testing and operations in a more rapid fashion. However, there are inherent risks to the vehicle using this approach. The project put forth significant effort in identifying and mitigating single-point failures that could cause loss of vehicle prior to heading to KSC. That included substantial subsystem-level testing, all of the tether testing previously described, and system-level protoqual testing, such as the ground hotfire test.

The primary exception to the single-string philosophy included safety systems in subsystems such as pressure systems and range safety. Pressure systems have redundant pressure relief components built in. There is also a dualredundant thrust termination system (TTS) on board the vehicle that that includes 2 independent valves in the propulsion system, either of which can cut engine thrust on command. This exemplifies the project emphasis on safety, even in light of accepting additional risk to the test vehicle itself.

The purpose of the ground hot-fire test was specifically to envelope the environments expected during liftoff of a free flight. HotFire 6 did exactly that. The vehicle was outfitted with a variety of instrumentation, including accelerometers, microphones and thermocouples, and was chained to the ground launch pad. Upon ignition, the engine was throttled up to 100% and remained for 5 seconds to conservatively characterize the environment. Beyond this type of testing, there were no standard qualification tests of components due to the prototype nature of the vehicle.

In addition to the actual testing accomplished, it was important to ensure all stakeholders were fully aware of the risk posture for free flights. The loss of the Morpheus 1.5A vehicle was pre-declared a test failure and not a mishap as long as no personnel were injured or infrastructure was damaged. In this light, the loss of vehicle was considered an acceptable risk for the purpose of advancing our understanding of all of the components of integrated vehicle performance.

–  –  –

Figure 9 – Shuttle Landing Facility at KSC: Morpheus Free Flight 1at ignition; and Free Flight 2 after it crash landed.

American Institute of Aeronautics and Astronautics: SPACE 2013 Free Flight 2 was attempted two days later, on August 9. In this test, the data from the only active IMU was lost 0.6 seconds into flight, causing the vehicle to lose control and crash. The combined JSC/KSC team immediately executed the pre-rehearsed emergency action plan to protect personnel and property, so damage was limited to vehicle hardware.

The timeline of events during takeoff is shown in Table 1.

–  –  –


The engineering investigation described herein was accomplished over three months and incorporated inputs from the entire Morpheus team as well as independent expert reviewers. The findings and corrective actions that resulted from the investigation are summarized in Table 2.

–  –  –

American Institute of Aeronautics and Astronautics: SPACE 2013 One final new test is planned before the team moves to KSC to begin free flight campaigns. A Ground Takeoff and Landing (GTAL) test, while still constrained via tether, will be conducted at JSC in September 2013. The concept is to buy down risk by demonstrating liftoff over a flame trench followed by a nominal translation, descent and landing back on the ground. The tether only provides range safety and will minimize any damage if there is a problem during the test. This will be the last test planned at JSC before the vehicle is moved back to KSC for testing at the SLF.

–  –  –

5 Accepted single-string IMU Dissimilar, non-colocated backup IMU(s) a. Test backup IMU down-mode and soft abort logic risk b. LCC requirement for operational backup IMU(s) 6 Accepted risk of brief (1) Reduce vibro-acoustic environment for IMUs with flame trench, vibe Americanisolation and relocation and Astronautics: SPACE 2013 Institute of Aeronautics exceedance of IMU qual limits due to HF6 and FF1 (2a) Use PA1 SIGI flight unit test experience


NASA’s Morpheus Project has developed and tested a prototype planetary lander capable of vertical takeoff and landing, designed to serve as a testbed for advanced spacecraft technologies. The ‘Alpha’ version of the Morpheus vehicle successfully performed a set of integrated vehicle test flights including hot-fire and tether tests, but was lost during the second free flight test at KSC. The test failure investigation identified a proximate cause as the loss of navigation data most likely due to excessive vibro-acoustic environments. A number of contributory factors were also identified and discussed, with appropriate corrective actions.

In early FY13, Morpheus rebuilt a ‘Bravo’ vehicle after loss of the ‘Alpha’ vehicle, and made a number of upgrades and improvements to the vehicle and ground subsystems, including integration of the Autonomous Landing and Hazard Avoidance Technology (ALHAT) Project’s hardware and software components. These upgrades will provide improved performance, expanded capabilities, and better robustness for an extended test campaign that will culminate in high energy trajectories that simulate a landing approach on a lunar, asteroid or planetary surface. The initial test campaign at JSC will be followed by free flights and high energy trajectories at KSC.

–  –  –

Jon B. Olansen, PhD – Dr. Olansen serves as the Project Manager for the Morpheus Project. He began his career as a Space Shuttle flight controller, supporting 32 missions and logging 4200 hours in Mission Control. Jon earned his B.S. in Aerospace Engineering and M.S. in Mechanical Engineering from the University of Notre Dame. He obtained his Ph.D.

in Mechanical Engineering (Biomedical Focus) as a National Instruments Fellow at Rice University, where he specialized in biomedical experimentation in electrophysiology and cardiopulmonary hemodynamics. He has published several journal articles related to his research and authored a reference book on biomedical instrumentation. He returned to NASA to represent the Astronaut Office in the design, development, and operation of human life sciences experiments destined for the International Space Station. Dr. Olansen has since held a number of positions of increasing responsibility including tours in Safety & Mission Assurance, the Shuttle Program Office and the Exploration Systems Mission Directorate at NASA Headquarters, before undertaking his current role.

Stephen R. Munday – Mr. Munday serves as the Deputy Project Manager for the Morpheus Project. His NASA career spans 26 years as a lead engineer, technical board chairman, system manager, and international technical liaison for various NASA programs including the X-38 Crew Return Vehicle, Space Shuttle, Orion Crew Exploration Vehicle, and International Space Station (ISS). His engineering expertise is primarily in the fields of aerodynamics and GN&C. Prior to joining the Morpheus team, he spent 4 years helping to manage NASA’s Moscow Technical Liaison Office in Russia’s Mission Control Center and in the Baikonur Cosmodrome in Kazakhstan on behalf of the ISS Program. Mr. Munday holds an M.S. degree in Aerospace Engineering (G&C focus) from the University of Texas in Austin, an M.S. in Computer Engineering from the University of Houston at Clear Lake, and a B.S. in Aerospace Engineering (aerodynamics focus) from the University of Missouri – Rolla (now the Missouri Univ of Science & Technology).

–  –  –

Pages:     | 1 ||

Similar works:

«Описание контрольных точек процедур POST Руководство пользователя POST-карты (диагностического контроллера) IC80, Version 5.0 Ревизия 7.8 © 2012 Содержание Вступление 4 Раздел 1 Check Points for AMIBIOS97, Core 6.x....................... 5 Коды неупакованной процедуры инициализации 5 Коды процедуры...»

«White PaPer Street Lighting LEDs: coming soon to a street light near you The Performance, Design and Cost Benefits of Power LEDs in Street Lighting LEDs have been taking to the streets since the 1990s, when cities throughout the U.S. and Europe began replacing incandescent-based traffic lights with highly energy-efficient solid state fixtures. Today’s power LEDs are poised to cross the next municipal frontier and tackle the challenge of street lighting. If the mass adoption of solid state...»

«CONTENTS 1. Effect of piracetam in reserpine-induced gastric ulcers in rats Vl Sandor, B Cuparencu, C Valsan, MA Birt, V Cristea 2. The activity of NADH and NADPH mitochondrial oxidase in psoriasis Adriana Filip, Simona Clichici, Adela Joanta, Rodica Cosgarea, Magda Petrescu, Adriana Muresan, M Dorofteiu 3. The effects of diltiazem in an experimental model of acute inflammation in rats Anca Dana Buzoianu, Dana Gosa, Claudia Militaru 4. Erythropoietin and thrombocytopoiesis Irina Chis, Ramona...»

«Download De Marketing in here. Also read document De Marketing online DE MARKETING PDF Download: DE MARKETING PDF DE MARKETING PDF Read title de marketing PDF? You will be glad to know that right now de marketing PDF is available on our online library. With our online resources, you can find de marketing or just about any type of ebooks, for any type of product. Index document are entirely free to find, use and download, so there is no cost or stress at all. de marketing PDF may not make...»

«Bibliography of Literature on the Mimetic Theory vol. XXXII* by Dietmar Regensburger, University of Innsbruck published in: COV&R: Bulletin of the Colloquium on Violence & Religion vol. 39 (October 2011) 1) Books concerning the entire work of René Girard Batuman, Elif: The Possessed: Adventures with Russian Books and the People Who Read Them. New York: Farrar, Straus and Giroux, 2010. Grenzgänger und Grenzgänge: Konrad Thomas: Schriften aus vierzig Jahren, edited by Korte, Norbert C....»

«DOCUMENT RESUME Fi. 025 071 ED 417 584 Bibliographie Moderner Fremdsprachenunterricht (Bibliography TITLE of Modern Second Language Instruction), 1997. Informationszentrum fur Fremdsprachenforschung, Marburg INSTITUTION (Germany). ISBN-3-86135-521-3; ISBN-3-86135-522-1; ISBN-3-86135-523-X; ISBN ISBN-3-86135-520-5 ISSN-0342-5576 ISSN 1997-00-00 PUB DATE 566p. NOTE Bibliographies (131) Reference Materials PUB TYPE German LANGUAGE Bibliographie Moderner Fremdsprachenunterricht; v28 n1-4 JOURNAL...»

«Prof. Dr. Dr. h. c. M. Jansen 1. M. Jansen, R. Hoppe: Neue Oxocobaltate Naturwissenschaften 59 (1972) 215-6 2. M. Jansen, R. Hoppe: Zur Kenntnis der NaCl-Strukturfamilie: Neue Untersuchungen an Li 2 MnO3 Z. anorg. allg. Chem. 397 (1973) 279-89 3. M. Jansen, R. Hoppe: Zur Kenntnis von Li 8 CoO 6 Z. anorg. allg. Chem. 398 (1973) 54-62 4. M. Jansen, R. Hoppe: Zur Kenntnis der NaCl-Strukturfamilie: Die Kristallstruktur von NaMnO 2 Z. anorg. allg. Chem. 399 (1973) 163-9 5. M. Jansen: Über...»

«Game Management & Sportsmanship Expectation Guide Forward Beyond Sportsmanship: We Are CHSAA Leadership Initiative “Leadership is an emotional commitment” The Colorado High School Activities Association has a comprehensive, effective, yet simple SPORTING BEHAVIOR program for Colorado high schools. By following this Game Management and Sporting Behavior Expectations Guide, you can create a positive competitive sporting environment that includes a commitment from all involved constituents. In...»

«Europäisches Parlament 2014-2019 Haushaltskontrollausschuss 3.9.2015 ARBEITSDOKUMENT über den Sonderbericht Nr. 8/2015 des Europäischen Rechnungshofs (Entlastung 2014) zum Thema „Wird dem Bedarf von Kleinstunternehmern durch finanzielle Unterstützung vonseiten der EU in angemessener Weise entsprochen?“ Haushaltskontrollausschuss Berichterstatterin: Inés Ayala Sender DT\1067967DE.doc PE564.917v01-00 DE DE In Vielfalt geeint Introduction Micro-entrepreneurs in the EU are those...»

«Interim Financial Report for the 3rd Quarter and First Nine Months of 2012 For the period from January 1, 2012 to September 30, 2012 Catalis SE nine months financial report 2012 1 Contents Key Figures 3 To Our Shareholders 4 Introduction 10 Management Report 10 Condensed Consolidated Interim Financial Statements 21 Additional Information 24 Catalis SE nine months financial report 2012 2 Key Figures (unaudited) €k € Tsd. Q3/2012 Q3/2011 9M/2012 9M/2011 Revenues (A) Umsatz (A) 7,275 7,402...»

«Living With The Ancestors Kinship And Kingship In Ancient Maya Society Below sleeves accumulate downloaded, using costs can build to ignore invested. If event diagnostics are your productivity will not change. A contact able to your much people is insurance means. All experts will negotiate the lending in bigger product. Products of the on this life will encourage your body and reward the payment by your times. Even the own type consumption is benefits, this epub organization if a able school,...»

«Federal union now Andrew Duff FEDERAL TRUST This pamphlet is published by the Federal Trust whose aim is to enlighten public debate on issues arising from the interaction of national, European and global levels of government. It does this in the light of its statutes which state that it shall promote ‘studies in the principles of international relations, international justice and supranational government.’ The Federal Trust is publishing this pamphlet as an important contribution to topical...»

<<  HOME   |    CONTACTS
2016 www.abstract.xlibx.info - Free e-library - Abstract, dissertation, book

Materials of this site are available for review, all rights belong to their respective owners.
If you do not agree with the fact that your material is placed on this site, please, email us, we will within 1-2 business days delete him.