Question 11.7: Find the optimal mass for a three-stage launch vehicle that ...
Find the optimal mass for a three-stage launch vehicle that is required to lift a 5000 kg payload to a speed of 10 km/s. For each stage, we are given that
Stage 1 I_{s p 1}=400 s \left(c_{1}=3.924 km / s \right) \quad \varepsilon_{1}=0.10
Stage 2 I_{s p 2}=350 s \left(c_{2}=3.434 km / s \right) \quad \varepsilon_{2}=0.15
Stage 3 I_{s p 3}=300 s \left(c_{3}=2.943 km / s \right) \quad \varepsilon_{3}=0.20
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