1 / 15

Mike Kowalkowski Week 8: March 8 th 2007

Mike Kowalkowski Week 8: March 8 th 2007. Project Aquarius Power Engineering Group Surface of Mars Lead MRCF, LP, NPS Vehicle Focal HAB, MLV, MRCF, LP, NPS, MR Power Contact. NPS Brayton Reactor Sizing. Power Conditioner. Main Rad. Conceptual Design Three 750 kWe reactors

shanta
Download Presentation

Mike Kowalkowski Week 8: March 8 th 2007

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mike KowalkowskiWeek 8: March 8th 2007 Project Aquarius Power Engineering Group Surface of Mars Lead MRCF, LP, NPS Vehicle Focal HAB, MLV, MRCF, LP, NPS, MR Power Contact

  2. NPS Brayton Reactor Sizing Power Conditioner Main Rad. • Conceptual Design • Three 750 kWe reactors • Only two operate at a time • 24% conversion efficiency • P / M / V – One NPS System • Power: 750 kWe • Mass: 11.7 mt • Volume: 23.6 m^3 • Numbers validated by independent codes3,4,6 • Reactor (Rogge)8 • Shield (Kowalkowski)5,7,10,11 • Radiator (Guyon)2 • Power converter (Kowalkowski)1 • Wiring system (Scott)9 Comp. Turb.. T.A. HXCHG Shield Mars Ground Reactor

  3. 1km Road Mars Surface Orientation LP/ MRCF Landing Zone 1 1km Road 1 km LOX / LH2 1 km 126 kWe NPS 3 1km ISPP 2 Mars Taxi LandingZone Road 6 m 1500 kWe ISPP 1 6 m 1200 kWe PMAD NPS 2 500 m 110 kWe 1km NPS 1 HAB 1 HAB 2 Not to scale

  4. Backup Slides Week 4 Readiness Level

  5. EP Brayton Reactor Sizing Main Rad. • Conceptual Design • One 2 MWe space reactor • Only operate one at a time • Two turbines at 1 MWe each • 24% conversion efficiency P / M / V – One EP System • Power: 2 MWe • Mass: 29.7 mt • Volume: 294 m^3 • Includes literature based PMAD values for space propulsion vehicles Power Conditioner Comp. Turb.. T.A. HXCHG Shield Reactor

  6. Final Values - Totals NPS (Kowalkowski/Rogge/Scott/Guyon)2,9: Mass: 55.3 mt Volume: 176 m^3 Power: 1.5 MWe system Included three 0.75 MWe reactors with PMAD & wiring to HABs, MRCF/LP, and ISPP. MRCF / LP (Fox/Kowalkowski): Mass: 103 mt Volume: 732 m^3 Power: 126 kWe max Includes 1 km of fuel piping, two storage tents, and a launch gantry with motor. Surface of Mars Layout

  7. Final Values – Power Systems HAB (1&2) (Kowalkowski): Mass: 1.645 mt Volume: 1.44 m^3 Power: 110 kWe max (55 kWe per HAB) Note PMAD included in NPS; only LiIon Battery sizing shown here. MR (Kowalkowski): Mass: 1.50 mt Volume: 1.31 m^3 Power: 69.3 kWe max Includes fuel cells and a no fault return battery system for 30 km/hr max speed, 12 hour nominal mission, 11.54 kWe human factors, 9500 kg, 120 km range Surface of Mars Layout

  8. Reactor Figures (Rogge)8 Mass – 0.53 mt Dimensions cylinder 0.48 x 0.48 m PMAD Figures (Scott)9 Mass – 15.9 mt Volume – 5.87 m^3 Brayton figures (Kowalkowski) Mass – 2 mt Volume – 5.07 m^3 Thermal radiator figures (Guyon / Kowalkowski)2 Mass – 7.39 mt Area – 169 m^2 Volume – 18 m^3 Shield figures (Kowalkowski) Mass – 1.61 mt Volume – 0.45 m^3 Major Assumption Regolith blocks harmful gamma and neutrino flux – 0.1 m away NPS Reactor Sizing Logic

  9. Reactor Figures (Rogge)8 Mass – 1.06 mt Dimensions cylinder 0.59 x 0.59 m PMAD Figures (Kowalkowski)** literature Mass – 5000 mt Volume – 5 m^3 Brayton figures (Kowalkowski) Mass – 3.55 mt Volume – 48 m^3 Thermal radiator figures (Guyon / Kowalkowski)2 Mass – 18.55 mt Area – 1250 m^2 Volume – 145 m^3 Shield figures (Kowalkowski) Mass – 1.387 mt Volume – 0.48 m^3 Major Assumption Shadow shield no human contact 1000 x relaxed EP 2 MWe Reactor Sizing Logic

  10. EP / NPS Reactor Sizing Logic (2) • All codes have been written, and values closely match those in current literature for the EP and NPS systems. This shows that our integrated code is delivering realistic values. • A sample EP size has been presented today, but note that this is not the final or the only EP system size. Others will be equivalently sized as finalized payloads are delivered on Friday. Though we are not at a complete 100% design fix as of Thursday evening, we are within the capability to quickly and accurately deliver numbers where needed using the rotating codes that are attached. Note that where I used someone else’s code, it was simply referenced to save paper; these codes will be available with my references online. Only codes that I directly edited or created are attached this week. • Note battery code and vehicle code also updated this week.

  11. Space Radiator Charts - Guyon

  12. Scott – HAB Distance to Wire Mass

  13. System Mass Trends – Lit Ref • We hit our target literature mass value independently within 2000 kg. This indicates to us that we are sizing these systems correctly.

  14. EP Literature Sheet - Reference • Reference full spreadsheet online under references. • Week6_Power_Kowalkowski.xls … 8 pages

  15. Cited References • 1 Barrett, Michael J. “Performance Expectations of Closed Brayton Cycle Heat Exchangers in 100 kWe Nuclear Space Power Systems.” 1st International Energy Conversion Engineering Conference. 17 - 21 August 2003, Portsmouth, Virginia. Available Online. • 2 Guyon, Matt – Thermal Radiator Sizing. Supplied Numbers and graphs 7 March 2007. • 3 Houts, Dr. Michael Email on Nuclear Propulsion Systems. February 2007. • 4 Hrbud, Dr. Ivana Pancake Breakfast Conversations on Nuclear Power Systems. February 2007. • 5 Kuttowski, Aaron. Project Legend, Reactor coding logic. Available online. • 6 Mason, Lee. A Comparison of Brayton and Sterling Space Nuclear Power Systems for Power Levels from 1 Kilowatt to 10 Megawatts. AIP - Space Technology and Applications International Forum, 2001.Available online. • 7 “Radiation Safety: University Research Compliance.” Nuclear Radiation Safety Handbook. Online http://compliance.vpr.okstate.edu/radsafety/handbook-3.htm. 7 March 2007. • 8 Rogge, Courtney – Reactorsizing_take2_rogge.m code. 7 March 2007. • 9 Scott, Ryan – Marswire.m code. 7 March 2007. • 10 Smith, Matthew. Project Infinity, Reactor coding logic. Available online. • 11 Wright, Steven A. and David Poston. “Low mass shielding for Martian Surface Power Reactors.” Space Technology and Applications International Forum-STAIF 2002. Online Available.

More Related