Online Size Measurement of Burning Particles of Solid Propellants

Yonghua Li; Kewei Pan; Li Ping; Bin Yang; Haitao Yu; Jianqi Shen

doi:10.3788/AOS202040.1512003

Journals >Acta Optica Sinica >Volume 40 >Issue 15 >Page 1512003 > Article

Acta Optica Sinica
Vol. 40, Issue 15, 1512003 (2020)

Online Size Measurement of Burning Particles of Solid Propellants

Yonghua Li¹, Kewei Pan³, Li Ping², Bin Yang², Haitao Yu^1、*, and Jianqi Shen¹

Author Affiliations

¹College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

²Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

³Solid Rocket Motor Technology Development Research Center, Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, China

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DOI: 10.3788/AOS202040.1512003 Cite this Article Set citation alerts

Yonghua Li, Kewei Pan, Li Ping, Bin Yang, Haitao Yu, Jianqi Shen. Online Size Measurement of Burning Particles of Solid Propellants[J]. Acta Optica Sinica, 2020, 40(15): 1512003 Copy Citation Text

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Fig. 1. Schematic of measurement system for burning particles

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Fig. 2. Radiation spectra

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Fig. 3. Schematic of multi-unit detector

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Fig. 4. Volume frequency distributions of standard particles. (a) Standard particles with size of 10.9 μm; (b) standard particles with size of 160 μm; (c) mixed standard particles

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Fig. 5. Volume frequency distributions of combustion particles at initial measurement height of 25 mm. (a) Low burning rate; (b) high burning rate

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Fig. 6. Volume frequency distributions of combustion particles at initial measurement height of 50 mm. (a) Low burning rate; (b) high burning rate

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Fig. 7. Volume frequency distributions of condensed products. (a) Low burning rate; (b) high burning rate

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Center wavelength /nm	Bandwidth /nm	Transmissivity /%	Cut-off wavelength /nm	Thickness /mm	Diameter /mm
450	±40	75	300--1100	3	6

Table 1. Parameters of band pass filter plate

Parameter	10.9 μm	160 μm
${D_{V 10}}_{}$ /μm	7.5	131.8
${D_{V 50}}_{}$ /μm	9.3	153.5
${D_{V 90}}_{}$ /μm	11.18	167.90
${D_{VMD}}_{}$ /μm	9.9	155.2
Error value /μm	1.0	4.8

Table 2. Equivalent particle size of standard particles

Parameter	h=25 mm		h=50 mm
Parameter	Low burning rate	High burning rate	Low burning rate	High burning rate
${D_{V 10}}_{}$ /μm	13.2	76.7	112.5	98.9
${D_{V 50}}_{}$ /μm	141.6	133.4	129.0	126.0
${D_{V 90}}_{}$ /μm	186.6	174.1	154.8	158.2
${D_{VMD}}_{}$ /μm	151.9	145.4	132.9	130.4

Table 3. Equivalent particle sizes of burning particles at different burning rates and different measuring heights

Parameter	Low burning rate	High burning rate
${D_{V 10}}_{}$ /μm	59.6	47.2
${D_{V 50}}_{}$ /μm	94.0	74.4
${D_{V 90}}_{}$ /μm	142.3	109.2
${D_{VMD}}_{}$ /μm	106.5	82.7

Table 4. Equivalent particle sizes of condensed particles

Parameter	Combustion particle						Condensed particle
	h=25 mm			h=50 mm			Condensed particle
	Low burning rate	High burning rate		Low burning rate	High burning rate		Low burning rate	High burning rate
${D_{VMD}}_{}$ /μm	151.9		145.4		132.9	130.4	106.5	82.7

Table 5. Average particle sizes of combustion particles and condensed particles in solid propellant

Yonghua Li, Kewei Pan, Li Ping, Bin Yang, Haitao Yu, Jianqi Shen. Online Size Measurement of Burning Particles of Solid Propellants[J]. Acta Optica Sinica, 2020, 40(15): 1512003

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