Propulsion Homework

Description

1. Hybrid RocketCalculate the recession rate of the HTPB propellant with a=0.1 and n=0.5. Oxidizer mass flow rate is 100 kg/s. Circular port radius is 10 cm. Compare propellant mass flow rate for port radii 10 cm and 15 cm. Port length is 1 m and density is 1000 kg/m3
Note: In the equation for recession rate both a and n are dimensional and numbers are based on experiment. Using oxidizer mass flow rate and radius in units provided will give proper unit for the recession rate.
2. Hall thrusterEstimate thrust of the Hall thruster having mass flow rate of 5 mg/s and voltage applied of 300 V. Assume that 75% of applied voltage is used for ion acceleration. Propellant is Xenon