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    TYCHO-L4 / L5 as a Relay: To provide communication for always out-of-sight locations to accompanied missions as a bookable and rentable service is the mission goal of the project. "Innovative" may describe a technical aspect of the mission (such as the propulsion system or scientific purpose) or a non-technical aspect (such as multi-lateral, international partnerships or funding methods)

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    TYCHO-L4 / L5 as a Relay: To provide communication for always out-of-sight locations to accompanied missions as a bookable and rentable service is the mission goal of the project. "Innovative" may describe a technical aspect of the mission (such as the propulsion system or scientific purpose) or a non-technical aspect (such as multi-lateral, international partnerships or funding methods)

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    133 views18 pages

    Sgac Ohb Andreas Hornig Tycho Presentation Dp5

    Uploaded by

    andreashornig
    TYCHO-L4 / L5 as a Relay: To provide communication for always out-of-sight locations to accompanied missions as a bookable and rentable service is the mission goal of the project. "Innovative" may describe a technical aspect of the mission (such as the propulsion system or scientific purpose) or a non-technical aspect (such as multi-lateral, international partnerships or funding methods)

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    of 18

    Technical Demonstrator Mission to Lunar Libration Point L4/L5 and Communication Relay Provision as a Service

    Dipl.-Ing. (FH) Andreas HORNIG, Student at University of Stuttgart, BW, Germany andreas.hornig@aerospaceresearch.net Twitter: @andreashornig SGAC and OHB SGC Scholarship Opportunity: Describe an innovative mission to the moon; "innovative" may describe a technical aspect of the mission (such as the propulsion system or scientific purpose) or a non-technical aspect (such as multi-lateral, international partnerships or funding methods)

    TYCHO-L4/L5:

    Current Situation
    Current wake of planned moon missions (selection): Agencies and Administrations China Chang'e 3 USA LADEE India Chandrayaan-2 Russia Luna-Glob 2 / Luna-Resurs Russia Luna-Glob 1 USA ILN Node 1 Cooperations ESA Space-X European Lunar Lander (OHB, Astrium)[3] Astrobotic Moon Mission 2013 2013/01/15 2014 2014 2015 2018[4]

    soon as December 2013[1]

    Universities Uni Stuttgart BW-1 Kleinsatellit Private Google Lunar X-Prize 26 Teams 2012 - 2015[2]

    Communication

    Communication as Common Mission Point: Communication for telecommand and telecommunication Direct communication to earth to own or shared reception points (DSN)

    TYCHO L4/L5 as a Relay: To provide communication for always out-of-sight locations to accompanied missions as a bookable and rentable service is the mission goal of TYCHO-L4/L5.

    TYCHO-L4/L5 Mission
    Position 1 for lander missions and rovers at the far side, or in deep craters and cold traps. (OHB European Lander Mission). Position 2 are orbits at short phases, were the direct line of sight to earth is blocked by moon. Position 3 is at low halo orbits, where future astronomical satellites will be placed that needs a blockage to reduce earth based electro-magnetic pollution or even space-stations.

    Signal Coverage ~48%

    TYCHO-L4/L5 Mission
    Position 1 for lander missions and rovers at the far side, or in deep craters and cold traps. (OHB European Lander Mission). Position 2 are orbits at short phases, were the direct line of sight to earth is blocked by moon. Position 3 is at low halo orbits, where future astronomical satellites will be placed that needs a blockage to reduce earth based electro-magnetic pollution or even space-stations.

    Signal Coverage ~73%

    TYCHO-L4/L5 Mission
    Position 1
    [l1] [l2]

    Position 2
    [l3]

    Position 3
    [l4] [l5]

    Signal Coverage ~96%


    ...

    [l6]

    Why Lagrange L4/L5?


    First:
    Having another View!

    Second:
    - L4 and L5 orbits are stable - only require attitude control for exact positioning & attitude - safe spaces in L2 and L3 for science satellites

    NASA/GSFC/Arizona State University [f1]

    TYCHO-L4/L5 Mission

    The innovation is the destination at L4 and to bring communication service to the moon for different and not just one organization's endeavor in a cost effective way by using a standard combus.

    Mission Overview: a) Technical Demonstration Goals b) Mission Goals c) Communication Relay as a Service d) Scientific Goals for Demonstrator Mission e) Organisatorial

    Mission Objectives & Analysis


    a) Technical demonstration goals [TG]: 1. the satellite must be transported into L4 or L5 orbit 2. attitude control must be able to keep the satellite in close distance of the chosen libration point (L4 or L5) (100km) 3. the satellite must be able to establish a communication relay from an earth based ground station to TYCHO-L4/L5 and to lunar surface, lunar orbit and lunar halo orbit 4. the communication field-of-view must include lunar surface, lunar orbits up to 1000km above lunar surface and the halo orbit at L2 5. After end of life (Phase F) the satellite shall make room and be transported outside the beanorbit of L4/L5. A grave-yard orbit should be avoided. 6. Serving as a demonstrator for future expansion stages and spin-offs

    Mission Objectives & Analysis


    b) Mission goals [MG]: 1. Operation time of 15 years => comparable to GEO Com-Sats
    BSS-702MP (Intelsat 21) [Boeing BSS] [f2]

    2. the communication system shall be a standard satellite bus => Commercial off-the-Shelf 3. the communication system must be designed with space agencies and administrations and private/commercial endeavors to create a universally compatible system => possible task for SGAC's Agencies Working Group?

    Mission Objectives & Analysis


    c) Communication Relay as a Service [CRS]: 1. TYCHO-L4/L5 can be transported in a dual moon mission and service as a relay station for this mission 2. After inauguration mission, follow-up science missions should regularly use TYCHO-L4/L5 to high capacity. This can only be achieved with joined efforts of further lunar missions.

    [f3]

    [f4]

    [f5]

    Mission Objectives & Analysis

    d) Scientific goals for the demonstrator mission [SGD]: 1. the satellite can be used for earth-l4-earth, earth-l4-lunar-l4-earth measurements 2. a dust-sensor for measuring dust and micro-meteorite density in the libration trap for long life-time estimation. => only for inauguration mission. Understanding of the Lagrange-Point L4/L5

    Mission Objectives & Analysis

    e) Organisatorial on International Level: - What to do after End-of-Life? Define Lagrange Graveyard - Harmonize Communication Define System, Frequencies and Protocols

    - Efficient Usage Find enough relay bookers during operation time for return of investment

    Mission Derivates

    TYCHO Demonstrator leading to Productive Models - Knowledge basis for future missions b y Agencies Cooperation Spin-Off
    [l8] [l9]

    Knowledge transfer beyond Earth-Lunar-Libration Points

    Inspiration

    Arthur C. Clarke's

    [5]

    [f6]

    Inspiration

    Arthur C. Clarke's

    [5]

    Thank you for your Attention! Any Questions?


    [f6]

    or email to andreas.hornig@aerospaceresearch.net

    Inspiration Fly me to the Moon!

    by wirelessmonkey [f7]

    Have an awesome time in Cape Town!

    Appendix
    More TYCHO-L4/L5:
    Paper: Video: http://bit.ly/qOsb1j (on spacegeneration.org) http://www.youtube.com/user/andreashornig

    Sources:

    [1] http://astrobotic.net/2011/02/06/astrobotic-technology-announces-lunar-mission-on-spacex-falcon-9 [2] http://www.googlelunarxprize.org/prize-details [3] http://www.esa.int/esaCP/SEM83CIK97G_Life_0.html [4] http://en.wikipedia.org/wiki/List_of_current_and_future_lunar_missions#Under_development [5] http://en.wikipedia.org/wiki/2001:_A_Space_Odyssey by Arthur C.Clarke

    Image Sources:

    [BG] http://upload.wikimedia.org/wikipedia/commons/9/9a/Mare_Imbrium-Apollo17.jpg [f1] http://www.nasa.gov/mission_pages/Mini-RF/multimedia/erlanger_crater.html [f2] http://www.boeing.com, photo taken from http://space.skyrocket.de/doc_sat/hs-702.htm [f3] http://www.aprizesat.com/gallery.php [f4] http://hindu.com/2007/01/10/images/2007011005661501.jpg [f5] http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=34697 [f6] MGM (original), Warner Bros. (current). Screenshot from http://www.ee.ryerson.ca/~elf/aso/ [f7] www.panoramio.com/photo/31816

    Logos:

    [l1] OHB [l3] Space X [l2] Google Lunar X-PRIZE [l4] ESA

    [l5] NASA [l6] DLR

    [l7] Eutelsat [l8] SES Astra

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