年間 6 号発行
ISSN 印刷: 2150-766X
ISSN オンライン: 2150-7678
Indexed in
COMPARATIVE INVESTIGATION OF DIFFERENT NANO-METAL MATERIALS ON COMBUSTION PROPERTIES OF DB AND CMDB PROPELLANTS
要約
In order to understand the effects of different nano-metal materials on the combustion properties of double-base (DB) and composite-modified double-base (CMDB) propellants, five different nanometal (nm) powders including nano-silver (nm-Ag), nano-copper (nm-Cu), nano-nickel (nm-Ni), nano-titanium (nm-Ti), and nano-aluminum (nm-Al) were selected and their effects on the combustion properties of DB and CMDB propellants were investigated. The results show that the five aforementioned nano-materials can enhance the combustion performance of DB and CMDB propellants. The burning rates of DB propellant at 10 MPa, which is the working pressure of many solid rockets, are in the following order: unm - Al > unm - Cu > unm - Ni = unm - Ti > unm - Ag > ublank; the pressure exponents of RDX-CMDB propellant at 6–10 MPa are in the following order: nnm - Ni < nnm - Ag < nnm - Ti < nnm - Cu < nblank < nnm - Al. In particular, 0.6% of nm-Ni can reduce the pressure exponent of RDX-CMDB propellant evidently from 0.26 to - 0.02 at 6-10 MPa, and that nm-Al is effective in increasing the burning rate of DB propellant. In the presence of 0.6% of nm-Al, the burning rate at 10 MPa is increased from 17.12 to 25.84 mm/s, and the pressure exponent at 10–20 MPa is decreased from 0.61 to 0.16.
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