Fig. 4. Isotime curves for establishing the SMF. suggesting that changes in the fleet size have the greatest effect on the time needed to install Ko when M is small. (This influence is accentuated in later periods of lunar soil processing.) In order to see how detrimental deferral of the revenues can be, it is also important to estimate the magnitude of the benefits. Once production of the final output has started, no more capital is manufactured. Consequently, the lunar mass flow reduces to where Kf is the total capital mass and the primes serve to distinguish certain functions from their previous values during the capital production phase. Since the equipment does not change, the production method is essentially fixed, thereby freezing the physical and economic parameters (9). It will further be assumed that the amount of output related expendables produced in space (AXQS) is negligible. Therefore, Eq. 4" becomes which satisfies the condition of steady-state production.
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