22.033 Final Design Presentation.ppt
《22.033 Final Design Presentation.ppt》由会员分享,可在线阅读,更多相关《22.033 Final Design Presentation.ppt(42页珍藏版)》请在麦多课文档分享上搜索。
1、,22.033 Final Design Presentation,Vasek Dostal Knut Gezelius Jack Horng John Koser Joe Palaia Eugene Shwageraus And Pete Yarsky With the Help of Kalina Galabova Nilchiani Roshanak Dr. Kadak,June 16th, 2003,22.033, Mission to Mars Design Course,Outline,Mission plan Space power system Surface power sy
2、stem Conclusions Future Work,June 16th, 2003,22.033, Mission to Mars Design Course,Mission Design Goals,Reduce costs Minimize initial launch masses. Make use of re-usable, scalable and evolvable systems. Increase science yield Increase surface stay times. Provide power rich environments. Leverage ad
3、vantages of nuclear energy to achieve these goals.,June 16th, 2003,22.033, Mission to Mars Design Course,Mission Plan Summary,Nuclear Powered Telecommunication Satellite in Mars orbit Demo space reactor & Electric Propulsion system Sample Return Demo surface reactor & ISRU plant Manned Exploration 2
4、 distinct transfer types Cargo Missions Crew Transfer Missions,June 16th, 2003,22.033, Mission to Mars Design Course,Cargo Missions,Large cargo mass to transfer. Efficient transfer desirable to reduce propellant mass. Transit time not critical (1+ year ok). Reusable Mars Transfer System (MTS) Ideal
5、application for Electric Propulsion technology. High Isp (high efficiency) Low thrust (long transit is tolerable),June 16th, 2003,22.033, Mission to Mars Design Course,Cargo Missions,June 16th, 2003,22.033, Mission to Mars Design Course,Electric Propulsion Options,Cargo missionsArray of advanced Ion
6、 / Hall thrusters,June 16th, 2003,22.033, Mission to Mars Design Course,Crew Transfer Missions,Fast transit required Reduces crew exposure to zero-gravity & radiation. Increases surface stay time. Requires high thrust to achievePropulsion Options VASIMR (only viable EP technology) NTR (Nuclear Therm
7、al Rocket) Chemical Rocket,June 16th, 2003,22.033, Mission to Mars Design Course,Crew Transfer Missions,3 Reactor Systems3 VASIMR EnginesHydrogen FuelTransfer Habitat,June 16th, 2003,22.033, Mission to Mars Design Course,Electric Propulsion (Manned Mission),Variable Specific Impulse Magnetoplasma Ro
8、cket VASIMR,10 MW of power,June 16th, 2003,22.033, Mission to Mars Design Course,Space Power System,June 16th, 2003,22.033, Mission to Mars Design Course,Nuclear Space Power System,Ultra-compact high power density reactor Fast Spectrum Pu Fuel Molten salt or Li coolant High temperature, low pressure
9、 coolant Good heat transport medium Thermo Photo Voltaic (TPV) cells High efficiency power conversion (up to 40%) No moving parts,June 16th, 2003,22.033, Mission to Mars Design Course,Space Power System Goals,Design for multiple round trips three 180 day round trips at full power Low mass 3 kg/kWe S
10、calable 200 kWe - Precursor 4000 kWe - Manned Simple and reliable No moving parts,June 16th, 2003,22.033, Mission to Mars Design Course,Reusable System Strategy,Cargo missions (Mars Transfer System) 1 new tank of propellant per transfer 1 new reactor core after 3 transfersCrew transfer (VASIMR Syste
11、m) 1 new tank of propellant per transfer 3 new reactor cores after 3 transfers,June 16th, 2003,22.033, Mission to Mars Design Course,Pu as a Fuel,Most reactive fuel in fast spectrum Small core size and mass Critical mass is independent of isotopic composition Proliferation resistant Reactor Grade Pu
12、 can be used Compact core High leakage, allows ex-core control Small shield Widely available Reduced cost (238Pu for Cassini mission was imported),June 16th, 2003,22.033, Mission to Mars Design Course,Molten Salt Fast Reactor: Reference Core Design,Power 11 MWth Dimensions 202020cm Total mass 185 kg
13、 - (50 kg Pu) Reflector thickness 6 cm (Zr3Si2) Coolant - molten salt (NaF-ZrF4) - High Boiling Temp Fuel - Reactor Grade Pu carbide,honeycomb plates keff BOL = 1.1 Core lifetime 540 FPD,Honeycomb Fuel,MSFR Core Layout,June 16th, 2003,22.033, Mission to Mars Design Course,MSFR Technology Challenges,
14、Fuel performance (El-Genk et al. 1984)Coated particle dispersed alternative fuel form Fuel Cladding Coolant compatibility Li as alternative to corrosive Molten Salt High temperature structural materials,June 16th, 2003,22.033, Mission to Mars Design Course,MSFR Technology Challenges (cont.),Pu fuel
15、environmental concernsWater submersion accident Launch in robust capsule,June 16th, 2003,22.033, Mission to Mars Design Course,Space Power Conversion Cycle Reference Concept,Coolant transfers the heat from the core to the internal radiator All power is radiated towards TPV collector TEM self powered
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
2000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 22033 FINALDESIGNPRESENTATIONPPT