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

Acta Optica Sinica, Volume. 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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Abstract Get PDF(in Chinese)

Figures & Tables(12)

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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Table 1. Parameters of band pass filter plate
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Table 1. Parameters of band pass filter plate
Center wavelength /nm Bandwidth /nm Transmissivity /% Cut-off wavelength /nm Thickness /mm Diameter /mm
450 ±40 75 300--1100 3 6

Table 2. Equivalent particle size of standard particles
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Table 2. Equivalent particle size of standard particles
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 3. Equivalent particle sizes of burning particles at different burning rates and different measuring heights

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

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 4. Equivalent particle sizes of condensed particles
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Table 4. Equivalent particle sizes of condensed particles
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 5. Average particle sizes of combustion particles and condensed particles in solid propellant
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Table 5. Average particle sizes of combustion particles and condensed particles in solid propellant
Parameter Combustion particle Condensed particle
h=25 mm h=50 mm
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

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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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