Question

Assume you have a rocket that requires a change in velocity of ¦¤V¡Ö9.6km/s . There are two options for the propulsion system --- 1. chemical and 2. electric --- each with a different specific impulse.

Using the setting of g 0 =9.81m/s^2 to calculate the propellant fraction required to achieve the necessary ¦¤V for each of propulsion system answer the following two questons.

Question 1

First, consider a cryogenic chemical propulsion system with Isp ¡Ö450s . Enter the required propellant fraction as a proportion with at least 2 decimal places


Question 2

Next, consider an electric propulsion system with Isp ¡Ö2000s . Enter the required propellant fraction as a proportion with at least 2 decimal places