The Magnetic Sail
Final Report to the NASA Institute of Advanced Concepts (NIAC) January 7, 2000
Principal Investigator: Robert Zubrin Co-Investigator: Andrew Martin Pioneer Astronautics 445 Union Blvd. Suite #125 Lakewood, CO 80228 303-980-0890
Table of Contents: 4.….Introduction: 5..…….Magsail Theory The magsail operating in a plasma wind. 5. Magsail orbits in heliocentric space 8 The magsail as an interstellar brake 11. The Phase I Study 12 13..…….Superconductor
Trade Study:
13…….Terms 14.…….Superconducting Wire Density 14.…….Superconducting Critical Temperature and Current Densities 14………..Low Temperature Superconductors 15………..High Temperature Superconductors 17..……Superconducting Technology: What Can We Expect 18.…….…Malozemoff's Law for BSCCO Bi-2223 19.……….Critical Current Density Predictions 21.……. Conclusions of Superconductor Trade Study 23…….Magsail
23
Systems Design:
Baseline Magsail Designs 23…….Coil Geometry – description of coil cross-section shape and configuration
23.……….Introduction 23.……….Cable Geometry 25………..Calculating MLI Areas 25.……….Thermal Transport Equations 26.……….Thermal Analysis Result 26.……….Calculated Wire Temperature 26.……….Current To Coil Mass Ratio 27.……….Additional Limitations, Concerns and Comments 28.…….Primary Power Trade Study – analysis of power options to energize main coil 28.……….Introduction 29.……….Power Densities 29.……….Primary Power System 29.……….Power Densities at 1 AU 29.……….Conclusion
1
30.…….Current Injection 30.……….Configuration 32.……….Operation 31.……….Connection to Power System 33.…….Shroud lines 34.…….....Deployment of Magsails in a Non-Superconducting State via Magnetic Forces 36….…….Magsail Deployment Diagrams 37.……….Shroud line and Magsail line spools 37.……….Connection Node Diagram 38.…….Magsail
Designs:
38…….Introduction 38.………….Temperature and Je 39.………….Estimated Je Vs. T for BSCCO Wire 39.………….Wire Density 40.…….Magsail Demonstrator Designs 40…….….Magsail Demonstrator – small solar powered technology demonstration design 41.……….Magsail Demonstrator Data 43.…….Optimized Operational Magsail Designs – optimized for Earth-Mars travel 44.……….Operational Magsail Data 47.…….Ultimate Magsail Performance 47….…….Ultimate Magsail Payload Vs. Distance 48.……. Magsail

下一页