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Hydrogen Peroxide vs. Hydrazine Attitude Control Thrusters

Hydrogen Peroxide vs. Hydrazine Attitude Control Thrusters. Brittany Waletzko Translunar /OTV Phase Week 5. The Scenario. Need thrusters to despin / desaturate reaction wheels during TLI Thrusters could be useful for attitude control during lunar descent as well (~20Nm needed)

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Hydrogen Peroxide vs. Hydrazine Attitude Control Thrusters

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  1. Hydrogen Peroxide vs. Hydrazine Attitude Control Thrusters Brittany Waletzko Translunar/OTV Phase Week 5 Brittany Waletzko - ATT

  2. The Scenario BrittanyWaletzko- ATT Need thrusters to despin/desaturate reaction wheels during TLI Thrusters could be useful for attitude control during lunar descent as well (~20Nm needed) Propulsion considering using H2O2 as oxidizer  use some for ATT <1>

  3. Bottom-Line Figures • Valves make both hydrazine and hydrogen peroxide throttleable • Hydrazine less massive but significantly more expensive Bottom line: Depending on final main engine selection, OTV phase ATT can accommodate with minimal project impact (level 3 changes) Future Work: Solidifying supporting hardware mass/power/cost figures, electrothermal hydrazine thruster options, other design alternatives BrittanyWaletzko- ATT <2>

  4. Questions? BrittanyWaletzko- ATT <3>

  5. Backup Slides: Preliminary Electrothermal Hydrazine Thruster Research Brittany Waletzko - ATT <4>

  6. Size and Mass Comparison: N2H4 and H2O2 Brittany Waletzko - ATT <5>

  7. Primary References Monopropellant Hydrazine Thrusters. Astrium Space Propulsion. 21 Jan 2009. <http://cs.astrium.eads.net/sp/SpacecraftPropulsion/MonopropellantThrusters.html> Rocket Research Corporation. "Final Report for Monopropellant Hydrazine Thruster System," 1965. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670030394_1967030394.pdf Eric Wernimont, Ph.D. General Kinetics, Inc.: Huntington Beach, CA. Email Correspondence 7 Feb - 10 Feb 2009. Astronautix. “Hydrazine” <http://www.astronautix.com/props/hydazine.htm> <http://www.marotta.com/DataSheets/MV100series.htm> <http://www.circlesealcontrols.com/products/atkomatic_valves/pdf/cscatkoc_2007-10_lo.pdf> “Electrothermal Hydrazine Data” <http://www.lr.tudelft.nl/live/pagina.jsp?id=6cf1d7c6-dd9a-432b-b40e-02f4f8ed0d0d&lang=en> BrittanyWaletzko- ATT <6>

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