METEOROID HAZARD TO SPACE VEHICLES IN ORBIT NEAR THE EARTHA FUNCTIONAL INTERPRETATION OF THE INFORMATION FOR DESIGN AND OPERATIONS DECISIONS

In this survey and analysis of the meteoroid hazard to space vehicles in near-earth orbits, operations research methods have been Angle Which Cross the Earth's Orbit per Second (Reproduction of Fig. 8 of Ref. 51) Page 67 68 69 7O 71 vi vehicle in a near-earth orbit, Eq. 62 An approximately normally distributed random variable showing the uncertainty in the mass dependence of meteoroid flux, Eqs.37, 44, and 49 A constant used with YI' Eq.48 An approximately normally distributed random variable showing the uncertainty in the mass dependence of meteoroid velocity relative to the earth's atmosphere, Eqs.56, 57, and 61 A constant used with Yz' Eq. 60 An approximately normally distributed random variable showing the uncertainty in the mass dependence of meteoroid velocity relative to a vehicle in a near-earth orbit, Eqs.62, 84, and 86 A constant used with Y3' Eq. 83 Approximately normally distributed random variables showing the uncertainty in the mass dependence of meteoroid density, Eqs.92 through 97, and 99 Constants used with Y4 and Ys ' Eqs.9Z and 96 Meteoroid crater depth, Eq. 105, for_thick targets