Rocket Propulsion Question

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Question I) For a single stage rocket: T = 955.23 kN, n = 16, Isp = 400 s and m0 = 70, 000 kg. The rocket is launched into a vertical trajectory. Neglecting drag and assuming g is constant at its sea level value, Find (a) the time until burnout, (b) burnout altitude, (c) burnout velocity, (d) max altitude reached

Question II) For a given rocket: mpl = 10,000 kg, payload structural fraction = 0.05, structural ratio = 0.15, Isp = 350 s, and take normal value for g. Find (a) payload velocity at burnout, the empty mass of the vehicle, and propellant mass for a single stage, (b) repeat part (a) for restricted 2 stage rocket, (c) repeat part (a) for a restricted 3 stage rocket
 

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