Mech 427/550 Rocket Propulsion, Fall 2015

Final Project Description

Satellite Propulsion System Design

Technical Description:

Objective: Design a propulsion system for Gokturk 3 satellite. Assume the following mission requirements:

Satellite mass (excluding the propulsion system): 1,200 kgo Initial orbit: 700 km 28.5 degrees circular

Orbital Maneuvers:o Inclination change: -2 degreeso Orbit raising to 800 km circular orbit

Constraints/Assumptions: The following are the constraints Ignore the attitude control effort. Limit acceleration to 0.1 g’s Use hybrid rocket propulsion Minimize propulsion system weight Fit the propulsion system into the baseline envelope.

Approach: Use the following approach in the design and optimization process Estimate the mission delta V Design (optimize) the satellite propulsion system in detail

Propellant selection Nozzle area ratio Chamber pressure Oxidizer to fuel ratio Determine the geometrical properties of the propulsion system such as length,

diameter, nozzle throat area, nozzle exit area, nozzle shape, combustion chamber/grain geometry.

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Consider integration into the aircraft. Positioning of the tanks, combustion chambers, transmission of the thrust force and stability of the aircraft with the thrust augmentation.

Full weight budget of the propulsion system For the propulsion system components use preliminary design equations to

estimate the weights. Select materials for nozzle, combustion chambers, oxidizer/fuel tanks, pressurization system tanks.

Consider operational issues in the propellant selection process Toxic propellants Explosive propellants Cryogenic propellants

Administrative Issues

Form teams of 4-5 students

Each student should be responsible for a major area: Propulsion System weight Mission design (trajectory) Operational issues (launch, propellant management etc…)

The results will be presented 20 minute presentation, 10 minutes for questions

A final report will be submitted Deadline: First day of finals 15-20 pages long with a executive summary page

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