A single stage chemical rocket, having an initial mass of $10,000 \mathrm{~kg}$ and specific impulse of $450 \mathrm{~s}$, is launched from the surface of the earth and has to reach the escape velocity $(11 \mathrm{~km} / \mathrm{s})$ at burn out. Consider $\underline{g}_{e}=9.8 \mathrm{~m} / \mathrm{s}^{2}$. If the atmospheric drag and the effect of gravity are to be neglected, the mass of propellant to be carried by the rocket is equal to___________________ $\mathrm{kg}$ (in one decimal place).

A single stage chemical rocket, having an initial mass of $10,000 \mathrm{~kg}$ and specific impulse of $450 \mathrm{~s}$, is launched from the surface of the earth and has to reach the escape velocity $(11 \mathrm{~km} / \mathrm{s})$ at burn out. Consider $\underline{g}_{e}=9.8 \mathrm{~m} / \mathrm{s}^{2}$. If the atmospheric drag and the effect of gravity are to be neglected, the mass of propellant to be carried by the rocket is equal to___________________ $\mathrm{kg}$ (in one decimal place).

1 Answer

127 votes

127