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Record Details

Record 66 of 4590
The Superheat Phenomenon in the Combustion of Magnesium Particles
External Online Source: doi:10.1016/0010-2180(92)90044-P
Author and Affiliation:
Shafirovich, E. IA.(Academy of Sciences (Russia), Inst. of Structural Macrokinetics, Chernogolovka, Russian Federation)
Goldshleger, U. I.(Academy of Sciences (Russia), Inst. of Structural Macrokinetics, Chernogolovka, Russian Federation)
Abstract: Magnesium is known to be a likely fuel for engines that could work in the CO2 atmospheres of Mars and Venus. The present paper reports temperature measurements of magnesium samples during combustion in CO2. The burning sample temperature increases with the decrease in the initial size. The temperature of the 1-mm samples is 300-400 K higher than the boiling point of magnesium. The stability of the superheated drop is explained by the presence of a porous shell on the surface. An attempt has been made to describe vaporization on the superheated drop by the Knudsen-Langmuir equation. During combustion at high-pressure fragment ejection of the flame is observed in high-speed motion pictures. This phenomenon is shown to be connected with the drop superheat. The repeated fracture of the outer shell formed in the flame ensures the complete burnout of metal particles at high pressure.
Publication Date: Mar 01, 1992
Document ID:
19920046868
(Acquired Nov 22, 1995)
Accession Number: 92A29492
Subject Category: PROPELLANTS AND FUELS
Report/Patent Number: E-8374
Document Type: Journal Article
Publication Information: Combustion and Flame (ISSN 0010-2180); 88; 425-432
Publisher Information: United States
Financial Sponsor: NASA; Washington, DC, United States
Organization Source: Academy of Sciences (Russia); Inst. of Structural Macrokinetics; Chernogolovka, Russian Federation
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CARBON DIOXIDE; MAGNESIUM; METAL COMBUSTION; METAL PARTICLES; SUPERHEATING; DROPS (LIQUIDS); METAL VAPORS; PLANETARY ATMOSPHERES; TEMPERATURE DEPENDENCE; THERMOCOUPLES
Imprint And Other Notes: Combustion and Flame (ISSN 0010-2180), vol. 88, March 1992, p. 425-432.
Availability Source: Other Sources
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