In a particular rocket engine, helium propellant is heated to $6000 \mathrm{~K}$ and $95 \%$ of its total enthalpy is recovered as kinetic energy of the nozzle exhaust. Consider helium to be a calorically perfect gas with specific heat at constant pressure of $5200 \mathrm{~J} / \mathrm{kgK}$. The exhaust velocity for such a rocket for an optimum expansion is _____________$\mathrm{m} / \mathrm{s}$

In a particular rocket engine, helium propellant is heated to $6000 \mathrm{~K}$ and $95 \%$ of its total enthalpy is recovered as kinetic energy of the nozzle exhaust. Consider helium to be a calorically perfect gas with specific heat at constant pressure of $5200 \mathrm{~J} / \mathrm{kgK}$. The exhaust velocity for such a rocket for an optimum expansion is _____________$\mathrm{m} / \mathrm{s}$

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