TY - GEN
T1 - Combustion of a TMEDA/WFNA hypergolic in a bipropellant rocket engine
AU - Hollingshead, Joshua M.
AU - Litzinger, Morgan
AU - Kiaoulias, Dimitris
AU - Eckenrode, Lucas M.
AU - Moore, Jeffrey D.
AU - Risha, Grant A.
AU - Yetter, Richard A.
N1 - Funding Information:
The authors wish to thank the Penn State Altoona Research and Sponsored Programs Office and Mr. Corey Griffin for sponsoring this internally-funded effort. Special thanks to Mr. Tim Deibler and Deibler Machining, LLC for machining of the injector plates and to Mr. Benjamin Smith for assembly and test firing assistance.
Publisher Copyright:
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2019
Y1 - 2019
N2 - The focus of this experimental research was to design and fabricate a fluid delivery system and bipropellant engine to characterize the combustion performance of non-toxic reactants. In this study, non-toxic or “green” reactants were classified as reactants that do not possess chlorine-containing compounds. The selected reactants consisted of blends of N,N,N',N'-tetramethylethylenediamine (TMEDA) fuel and white fuming nitric acid (WFNA) oxidizer, fired in a combustion chamber using different styles of impinging igniter designs to evaluate whether TMEDA was a viable fuel replacement for hydrazine. Specific operating conditions such as fuel and oxidizer mass flow rates and chamber pressure were varied throughout the experimental matrix. The combustion performance parameters of interest were combustion efficiency, thrust, and specific impulse. Results among the three injector designs with similar mass flow rates and chamber volume showed an unlike doublet operating at an equivalence ratio near unity had the greatest combustion efficiency. Combustion efficiencies of TMEDA/WFNA were demonstrated at 78% for a constant chamber volume, with room for improvement in characteristic length.
AB - The focus of this experimental research was to design and fabricate a fluid delivery system and bipropellant engine to characterize the combustion performance of non-toxic reactants. In this study, non-toxic or “green” reactants were classified as reactants that do not possess chlorine-containing compounds. The selected reactants consisted of blends of N,N,N',N'-tetramethylethylenediamine (TMEDA) fuel and white fuming nitric acid (WFNA) oxidizer, fired in a combustion chamber using different styles of impinging igniter designs to evaluate whether TMEDA was a viable fuel replacement for hydrazine. Specific operating conditions such as fuel and oxidizer mass flow rates and chamber pressure were varied throughout the experimental matrix. The combustion performance parameters of interest were combustion efficiency, thrust, and specific impulse. Results among the three injector designs with similar mass flow rates and chamber volume showed an unlike doublet operating at an equivalence ratio near unity had the greatest combustion efficiency. Combustion efficiencies of TMEDA/WFNA were demonstrated at 78% for a constant chamber volume, with room for improvement in characteristic length.
UR - http://www.scopus.com/inward/record.url?scp=85095969635&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85095969635&partnerID=8YFLogxK
U2 - 10.2514/6.2019-4155
DO - 10.2514/6.2019-4155
M3 - Conference contribution
AN - SCOPUS:85095969635
SN - 9781624105906
T3 - AIAA Propulsion and Energy Forum and Exposition, 2019
BT - AIAA Propulsion and Energy Forum and Exposition, 2019
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Propulsion and Energy Forum and Exposition, 2019
Y2 - 19 August 2019 through 22 August 2019
ER -