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## Main Question or Discussion Point

A spaceship with empty mass MSS(?kg), start its journey from A to B which distance is RAB(?ly). The amount of fuel the spaceship

initially carry is MFUEL(?kg), which energy per mass is EPM (?Joule/kg). The spaceship engine efficiency is SEP (?%), and the engine is capable of burning FPS (?kg/s) mass of fuel per second. If the interstellar medium friction constant is IMD (?/s), calculate :

1. The maximum cruising speed ? (SRF and IRF)

2. Length of acceleration and deceleration phase ? (SRF and IRF)

3. Length of constant cruising speed ? ( I expect it to be harder if

there is IMD ). (SRF and IRF)

4. The heat generated by friction ?

5. How the question may look like if we add the energy required to

support the crew which is ESC (Watt) into the problem ?

SRF = Ship's Reference Frame

IRF = Inertial Reference Frame

initially carry is MFUEL(?kg), which energy per mass is EPM (?Joule/kg). The spaceship engine efficiency is SEP (?%), and the engine is capable of burning FPS (?kg/s) mass of fuel per second. If the interstellar medium friction constant is IMD (?/s), calculate :

1. The maximum cruising speed ? (SRF and IRF)

2. Length of acceleration and deceleration phase ? (SRF and IRF)

3. Length of constant cruising speed ? ( I expect it to be harder if

there is IMD ). (SRF and IRF)

4. The heat generated by friction ?

5. How the question may look like if we add the energy required to

support the crew which is ESC (Watt) into the problem ?

SRF = Ship's Reference Frame

IRF = Inertial Reference Frame