# Question 11.4: The following data are given mPL = 10,000 kg πPL = 0.05 ε = ...

The following data are given

\begin{aligned}m_{P L} &=10,000 kg \\\pi_{ PL } &=0.05 \\\varepsilon &=0.15 \\I_{s p} &=350 s \\g_{o} &=0.00981 km / s ^{2}\end{aligned} (a)

Calculate the payload velocity v_{b o} at burnout, the empty mass of the launch vehicle and the propellant mass for (a) a single stage and (b) a restricted, two-stage vehicle.

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