Electrolytic-induced decomposition and ignition of han-based liquid monopropellants

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Experimental results are reported on the ignition characteristics of XM46 liquid propellant at room conditions using electrolysis. The ignition system employed a titanium microfin electrode module, which is comprised of 8 parallel fins evenly spaced with separation distance of 1-mm. Each fin has a dimension of 9 × 19 × 0.25 mm generating a surface area of approximately 350 mm2. Input voltage to the electrodes ranged from 7 to 26 VDC and electrode surface area ranged from 1050 to 4200 mm2. Experiments were performed in a liquid strand burner in which the propellant ignited, combusted, and propagated downward. The propellant initially bubbled at the surface of the electrodes and then ignited to establish a self-propagating thermal wave. The observed linear burning rates were consistent with extrapolated values of published rates at higher pressures. At one atmosphere, a highly luminous gas-phase flame positioned above the surface of the propellant was not observed. A higher input voltage facilitated the gasification of XM46 while minimizing the total energy required. The time delay to peak power (reactivity) decayed exponentially from 160 seconds to 2-3 seconds with an increase in the input voltage from 7 to 12 VDC. Beyond 12 VDC, the time delay dependency became less significant and appeared to remain constant. Peak power increased from 30 to 550 W when the input voltage was increased from 7 to 15 VDC. The power density decreased with increasing surface area indicating that the power was not linearly dependent on electrode surface area. The propellant liquid temperature reached a nearly steady-state temperature of 115oC, which agrees with the temperature or pure HAN during thermal decomposition.

Original languageEnglish (US)
Title of host publicationAdvancements in Energetic Materials and Chemical Propulsion
Pages567-580
Number of pages14
StatePublished - 2005
Event6th International Symposium on Special Topics in Chemical Propulsion: Advancements in Energetic Materials and Chemical Propulsion, ISICP 2006 - Santiago, Chile
Duration: Mar 8 2005Mar 11 2005

Publication series

NameAdvancements in Energetic Materials and Chemical Propulsion

Other

Other6th International Symposium on Special Topics in Chemical Propulsion: Advancements in Energetic Materials and Chemical Propulsion, ISICP 2006
CountryChile
CitySantiago
Period3/8/053/11/05

Fingerprint

Monopropellants
Ignition
Decomposition
Liquids
Propellants
Electrodes
Liquid propellants
Electric potential
Time delay
Ignition systems
Titanium
Fuel burners
Electrolysis
Gasification
Temperature
Pyrolysis
Gases

All Science Journal Classification (ASJC) codes

  • Materials Chemistry

Cite this

Risha, G. A., Yetter, R. A., & Yang, V. (2005). Electrolytic-induced decomposition and ignition of han-based liquid monopropellants. In Advancements in Energetic Materials and Chemical Propulsion (pp. 567-580). (Advancements in Energetic Materials and Chemical Propulsion).
Risha, Grant Alexander ; Yetter, Richard A. ; Yang, V. / Electrolytic-induced decomposition and ignition of han-based liquid monopropellants. Advancements in Energetic Materials and Chemical Propulsion. 2005. pp. 567-580 (Advancements in Energetic Materials and Chemical Propulsion).
@inproceedings{d5d715481f234b91b75618a244d4bb97,
title = "Electrolytic-induced decomposition and ignition of han-based liquid monopropellants",
abstract = "Experimental results are reported on the ignition characteristics of XM46 liquid propellant at room conditions using electrolysis. The ignition system employed a titanium microfin electrode module, which is comprised of 8 parallel fins evenly spaced with separation distance of 1-mm. Each fin has a dimension of 9 × 19 × 0.25 mm generating a surface area of approximately 350 mm2. Input voltage to the electrodes ranged from 7 to 26 VDC and electrode surface area ranged from 1050 to 4200 mm2. Experiments were performed in a liquid strand burner in which the propellant ignited, combusted, and propagated downward. The propellant initially bubbled at the surface of the electrodes and then ignited to establish a self-propagating thermal wave. The observed linear burning rates were consistent with extrapolated values of published rates at higher pressures. At one atmosphere, a highly luminous gas-phase flame positioned above the surface of the propellant was not observed. A higher input voltage facilitated the gasification of XM46 while minimizing the total energy required. The time delay to peak power (reactivity) decayed exponentially from 160 seconds to 2-3 seconds with an increase in the input voltage from 7 to 12 VDC. Beyond 12 VDC, the time delay dependency became less significant and appeared to remain constant. Peak power increased from 30 to 550 W when the input voltage was increased from 7 to 15 VDC. The power density decreased with increasing surface area indicating that the power was not linearly dependent on electrode surface area. The propellant liquid temperature reached a nearly steady-state temperature of 115oC, which agrees with the temperature or pure HAN during thermal decomposition.",
author = "Risha, {Grant Alexander} and Yetter, {Richard A.} and V. Yang",
year = "2005",
language = "English (US)",
isbn = "9781567002393",
series = "Advancements in Energetic Materials and Chemical Propulsion",
pages = "567--580",
booktitle = "Advancements in Energetic Materials and Chemical Propulsion",

}

Risha, GA, Yetter, RA & Yang, V 2005, Electrolytic-induced decomposition and ignition of han-based liquid monopropellants. in Advancements in Energetic Materials and Chemical Propulsion. Advancements in Energetic Materials and Chemical Propulsion, pp. 567-580, 6th International Symposium on Special Topics in Chemical Propulsion: Advancements in Energetic Materials and Chemical Propulsion, ISICP 2006, Santiago, Chile, 3/8/05.

Electrolytic-induced decomposition and ignition of han-based liquid monopropellants. / Risha, Grant Alexander; Yetter, Richard A.; Yang, V.

Advancements in Energetic Materials and Chemical Propulsion. 2005. p. 567-580 (Advancements in Energetic Materials and Chemical Propulsion).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Electrolytic-induced decomposition and ignition of han-based liquid monopropellants

AU - Risha, Grant Alexander

AU - Yetter, Richard A.

AU - Yang, V.

PY - 2005

Y1 - 2005

N2 - Experimental results are reported on the ignition characteristics of XM46 liquid propellant at room conditions using electrolysis. The ignition system employed a titanium microfin electrode module, which is comprised of 8 parallel fins evenly spaced with separation distance of 1-mm. Each fin has a dimension of 9 × 19 × 0.25 mm generating a surface area of approximately 350 mm2. Input voltage to the electrodes ranged from 7 to 26 VDC and electrode surface area ranged from 1050 to 4200 mm2. Experiments were performed in a liquid strand burner in which the propellant ignited, combusted, and propagated downward. The propellant initially bubbled at the surface of the electrodes and then ignited to establish a self-propagating thermal wave. The observed linear burning rates were consistent with extrapolated values of published rates at higher pressures. At one atmosphere, a highly luminous gas-phase flame positioned above the surface of the propellant was not observed. A higher input voltage facilitated the gasification of XM46 while minimizing the total energy required. The time delay to peak power (reactivity) decayed exponentially from 160 seconds to 2-3 seconds with an increase in the input voltage from 7 to 12 VDC. Beyond 12 VDC, the time delay dependency became less significant and appeared to remain constant. Peak power increased from 30 to 550 W when the input voltage was increased from 7 to 15 VDC. The power density decreased with increasing surface area indicating that the power was not linearly dependent on electrode surface area. The propellant liquid temperature reached a nearly steady-state temperature of 115oC, which agrees with the temperature or pure HAN during thermal decomposition.

AB - Experimental results are reported on the ignition characteristics of XM46 liquid propellant at room conditions using electrolysis. The ignition system employed a titanium microfin electrode module, which is comprised of 8 parallel fins evenly spaced with separation distance of 1-mm. Each fin has a dimension of 9 × 19 × 0.25 mm generating a surface area of approximately 350 mm2. Input voltage to the electrodes ranged from 7 to 26 VDC and electrode surface area ranged from 1050 to 4200 mm2. Experiments were performed in a liquid strand burner in which the propellant ignited, combusted, and propagated downward. The propellant initially bubbled at the surface of the electrodes and then ignited to establish a self-propagating thermal wave. The observed linear burning rates were consistent with extrapolated values of published rates at higher pressures. At one atmosphere, a highly luminous gas-phase flame positioned above the surface of the propellant was not observed. A higher input voltage facilitated the gasification of XM46 while minimizing the total energy required. The time delay to peak power (reactivity) decayed exponentially from 160 seconds to 2-3 seconds with an increase in the input voltage from 7 to 12 VDC. Beyond 12 VDC, the time delay dependency became less significant and appeared to remain constant. Peak power increased from 30 to 550 W when the input voltage was increased from 7 to 15 VDC. The power density decreased with increasing surface area indicating that the power was not linearly dependent on electrode surface area. The propellant liquid temperature reached a nearly steady-state temperature of 115oC, which agrees with the temperature or pure HAN during thermal decomposition.

UR - http://www.scopus.com/inward/record.url?scp=84874727175&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874727175&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84874727175

SN - 9781567002393

T3 - Advancements in Energetic Materials and Chemical Propulsion

SP - 567

EP - 580

BT - Advancements in Energetic Materials and Chemical Propulsion

ER -

Risha GA, Yetter RA, Yang V. Electrolytic-induced decomposition and ignition of han-based liquid monopropellants. In Advancements in Energetic Materials and Chemical Propulsion. 2005. p. 567-580. (Advancements in Energetic Materials and Chemical Propulsion).