Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

Tether Boost Facility Design AIAA 2000-3866Table 1. System Orbital Design for LEO⇒GTO BoostSystem Masses Tether CharacteristicsTether mass 8,274 kg Tether Length 100,000 mCS Active Mass 11,514 kg Tether mass ratio 3.31CS Ballast Mass 3490 kg Tether tip velocity at catch 1,267 m/sGrapple mass 650 kg Tether tip velocity at toss 1,147 m/sTotal Facility Mass 23,928 kg Tether angular rate 0.015514 rad/sGravity at Control Station0.64 gTotal Launch Mass 20,438 kg Gravity at payload 1.81 gRendezvous acceleration2.00 gPayload Mass2,500 kgPre-CatchJoinedSystem Post-TossPositions & Velocities Payload Tether Post-catch Tether Payloadresonance ratio 4 1 2 0 1 4.1perigee altitude km 325 407 399 391 473apogee altitude km 325 8445 7199 6105 35786perigee radius km 6703 6785 6777 6769 6851apogee radius km 6703 14823 13578 12483 42164perigee velocity m / s 7711 8978 8858 8738 10005apogee velocity m / s 7711 4109 4421 4739 1626CM dist. From Station m 18356 26080 18356CM dist. To Grapple m 81644 73920 81644∆V to Reboost m / s 240∆V to Correct Apogee m / s 0∆V to Correct Precess. m / s 0∆V To Circularize m / s 1449Basic Orbital Parameterssemi-major axis km 6703 10804 10177 9626 24508eccentricity 0.0 0.372 0.334 0.297 0.720inclination rad 0 0 0 0 0semi-latus rectum km 6703 9309 9041 8778 11787sp. mech. energy m2/s2 -2.97E+07 -1.84E+07 -1.96E+07 -2.07E+07 -8.13E+06vis-viva energy m2/s2 -5.95E+07 -3.69E+07 -3.92E+07 -4.14E+07 -1.63E+07period sec 5462 11176 10218 9399 38183period min 91.0 186.3 170.3 156.7 636.4station rotation period sec 405.0 405.0 405.0rotation ratio 27.6 25.2 23.25.00E+003.00E+00GrappleEndControl StationEndRadius1.00E+00(mm)100000-1.00E+0095000 90000 85000 80000 75000 70000 65000 60000 55000 50000 45000 40000 35000 30000 25000 20000 15000 10000 5000 0-3.00E+00-5.00E+00Distance From Control StationFigure 3. Taper of the tether cross-section (tether will actually be composed of multiple smaller lines).4