Moon & Mars Orbiting Spinning Tether Transport - Tethers Unlimited

100000 95000 90000 85000 80000 75000 70000 65000 60000 55000 50000 45000 40000 35000 30000 25000 20000 15000 10000 5000 0µSat Tether Facility DesignMass Ratios:• Control Station 747 kg• Upper Stage (Ballast) 371 kg• Grapple 50 kg• Tether 743 kg• TOTAL: = 9 x payloadTether Length: 100 kmOrbit:• 405x8446 km ->390x6103 kmSystem Masses Tether CharacteristicsTether mass 743 kg Tether Length 100 kmCS Active Mass 747 kg Tether mass ratio 3.71CS Ballast Mass 371 kg Tether tip velocity at catch 1,268 m/sGrapple mass 5 0 kg Tether tip velocity at toss 1,148 m/sTotal Facility Mass 1,911 kg Tether angular rate 0.015803 rad/sGravity at Control Station0.70 gTotal Launch Mass 1,540 kg Gravity at payload 1.85 gRendezvous acceleration2.04 gPayload Mass2 0 0 kgPre-CatchJoinedSystem Post-TossPositions & Velocities Payload Tether Post-catch Tether Payloadperigee altitude km 325 405 398 390 470apogee altitude km 325 8446 7199 6103 35786perigee radius km 6703 6783 6776 6768 6848apogee radius km 6703 14824 13577 12481 42164perigee velocity m / s 7711 8979 8859 8739 10007apogee velocity m / s 7711 4109 4421 4739 1625CM dist. From Station m 19765 27365 19765CM dist. To Grapple m 80235 72635 80235∆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 10176 9625 24506eccentricity 0.0 0.372 0.334 0.297 0.721inclination rad 0 0 0 0 0semi-latus rectum km 6703 9308 9040 8777 11783sp. 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 10217 9397 38179period min 91.0 186.3 170.3 156.6 636.3station rotation period sec 397.6 397.6 397.6rotation ratio 28.1 25.7 23.61.00E+00Radius(mm)MX Tethers7-1.00E+00Distance From Control StationTether Facility Reboost• Tether facility transfersmomentum & energy topayload– tether orbit apogeedrops ~2300 km• Tether must restore 4 GJof orbital energy• To reboost within 30days, must add energyto orbit at 1.6 kW• Requires EOL PanelPower of 7.5 kWMX Tethers8