Question

In: Physics

As discussed in the previous question, the second stage of the propulsion system is used to...

As discussed in the previous question, the second stage of the propulsion system is used to boost the spacecraft from Martian orbit into an interplanetary trajectory and return to Earth.

Knowing that the thrust generated by the second stage is 2620 N and the rocket exhaust velocity is 430 m/s; calculate the minimum amount of propellant needed to have a chance of returning to Earth. Assume that the thruster must be turned on for 2 minutes in order to reach the proper velocity.

Give your answer in kg.

Thank you for your time!

Expert Solution

Given:

As discussed in the previous question, the second stage of the propulsion system is used to boost the spacecraft from Martian orbit into an interplanetary trajectory and return to Earth.

Knowing that the thrust generated by the second stage is 2620 N and the rocket exhaust velocity is 430 m/s; calculate the minimum amount of propellant needed to have a chance of returning to Earth. Assume that the thruster must be turned on for 2 minutes in order to reach the proper velocity.

Give your answer in kg.

Thank you for your time!

We are given the thrust which is a force is given as --- . We are then given the mass of the propellant is is given the increase in velocity --- . The rocket is fired for . We can then use the impulse momentum theorem to calculate the mass of propellant :

===>

--- SOLUTION .

genius_generous answered 1 day ago

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