Determination of nuclear-rocket power levels for unmanned mars vehicles starting from orbit about earth
National Aeronautics and Space Administration, 1962 - Science - 40 pages
Nuclear rocket power levels for unmanned mars vehicles from earth orbit.
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000-pound vehicle 1000 megawatts acceptable payload afterheat cooling Apoares altitude assumed atmospheric drag calculations chemical boosters Chemical Rockets chemical vehicles Comparisons with Chemical control equipment curves Deceleration into orbit destination orbit deviation in firing Earth and Mars enthalpy equation figure 7(a firing date gravitational constant guidance and control hazardous hits Hydrogen stagnation temperature hydrogen tanks Hydrogen temperature hyperbolic velocities indicates landing on Mars large vehicle leaving the orbit load plus powerplant meteoroid protection miles miles/sec NASA naut nuclear reactor nuclear rocket nuclear stage nuclear vehicles nuclear-powered vehicle optimum date orbit about Earth orbit about Mars orbital launch payload in orbit percent pounds 2720 kg powerplant weight propellant ratio reference residual load shown in figure sidual load soft landing solid-propellant rocket specific impulse tank weights thrust trips unmanned values of reactor vehicle gross weight vehicle guidance vehicle powered vehicle weight leaving velocity vector weight leaving orbit