P17101: RIT-SPEX Gas Resistojet
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Systems Design

Table of Contents

Team Vision for System-Level Design Phase

Functional Decomposition

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Concept Development

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Concept 1 - Resistojet

Propellant is stored in a high-pressure vessel and released with a binary solenoid valve. The propellant is convectively heated by a finned resistive heating element and exhausted out a conical nozzle.

Concept 2 - Arcjet

Propellant is stored in a high-pressure vessel and released with a binary solenoid valve. An electric arc is created across an cathode placed in the engine chamber and the nozzle throat, which serves as an anode. The propellant gas is heated as it flows through the electric arc and is exhausted out a conical nozzle.

Feasibility: Prototyping, Analysis, Simulation

Cost

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*If judged to be suitable based on HT calculations.

Note: This is not total project cost. As material cost was a driving selection factor, the critical material purchases are shown here. Things not included that may need to be purchased include sensors, test stand material, microcontroller, electronic components, and a power supply.

Power

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Testing

Design Considerations

http://ccar.colorado.edu/asen5050/projects/projects_2002/dickinson/

http://ccar.colorado.edu/asen5050/projects/projects_2002/dickinson/

http://ccar.colorado.edu/asen5050/projects/projects_2002/dickinson/

http://ccar.colorado.edu/asen5050/projects/projects_2002/dickinson/

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For a first-draft design of our nozzle please click here.

Propellants

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Concept Selection

Concept Screening Pugh Chart

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Weighted Concept Selection Matrix

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Systems Architecture

Thruster System

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Test Stand System

Designs and Flowcharts

Electrical Flowchart

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Propellant Flowchart

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System Flowchart

Benchmarking

Olin College: Comparable Arcjet Prototype

public/Systems%20Level%20Design%20Documents/OlinCollegeCAD.png public/Systems%20Level%20Design%20Documents/OlinCollegeBOM.png Source: Heyns, Michael G. "Design and Development of an Nitrogen Arcjet Thruster." Web. 10 Oct. 2016.

Risk Assessment

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Design Review Materials

Plans for next phase

Phase 2

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Phase 3

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Individual Plans


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