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Tsao-Fa Yeh

Bio: Tsao-Fa Yeh is an academic researcher from National Defense University. The author has contributed to research in topics: Supercritical fluid & Combustion. The author has an hindex of 4, co-authored 9 publications receiving 56 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the authors mainly explored the burning characteristics of AP/Al/HTPB composite solid propellant containing nano-sized ferric oxide (Fe2O3) powder.
Abstract: This study mainly explores the burning characteristics of AP/Al/HTPB composite solid propellant containing nano-sized ferric oxide (Fe2O3) powder. First, the appropriate dispersed technique is applied to prepare the propellant samples containing the ferric oxide (micro-sized and/or nano-sized) powder, and then the scanning electron microscope (SEM) is used to observe the dispersed effect of ferric oxide powder in the propellant samples. Afterward, the reaction characteristics of the propellant samples are measured using differential scanning calorimeter (DSC), and the difference between their properties is analyzed. Finally, the propellant samples are processed to be used for various experiments, and the window bomb (WB), burning rate meter (BRM), and quenched particle collection bomb (QPCB) are used to study the burning characteristics. The burning phenomena are also analyzed by means of the combustion observation technique. Furthermore, the pull-testing machine is conducted to evaluate the mechanical pr...

28 citations

Journal ArticleDOI
29 Aug 2019
TL;DR: In this paper, the authors focused on the micronization of p-toluenesulfonamide (p-TSA) using the rapid expansion of supercritical solution (RESS) process.
Abstract: This study is focused on the micronization of p-toluenesulfonamide (p-TSA) using the rapid expansion of supercritical solution (RESS) process. Taguchi’s experimental design method was applied to determine the optimum operating conditions. L9(34) orthogonal array with four control factors and three levels of each control factor was used to design nine experimental conditions. Four control factors were selected, including extraction temperature, extraction pressure, pre-expansion temperature, and post-expansion temperature. The particle size and morphology of the prepared samples were observed by scanning electron microscopy (SEM). In addition, Fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) were employed to compare the differences between the raw and micronized p-TSA particles. The experimental and analytical results indicated that the extraction temperature was the most significant factor for the micronization of p-TSA in the RESS process, and the optimal operating conditions were at an extraction temperature of 50 °C, an extraction pressure of 220 MPa, a pre-expansion temperature of 220 °C, and a post-expansion temperature of 30 °C. The p-TSA particles were micronized from the original average size of 294.8 μm to the smallest average size of 1.1 μm at the optimal RESS process conditions. Furthermore, the physicochemical characteristics of p-TSA did not differ significantly before and after recrystallization.

11 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the effects of nano-sized additive on decomposition kinetics, reaction models, decomposition mechanisms and burning rates, pressure exponents, combustion wave structures, and flame propagation of RDX-, HMX-, and AP-based energetic compositions are discussed.

255 citations

Journal ArticleDOI
TL;DR: In this paper, a review of nanoscale catalysts having at least a metallic entity has been presented, which can play multiple roles in combustion of CSPs such as reduction in activation energy, enhancement of rate of reaction, modification of sequences in reaction-phase, influence on condensed phase combustion and participation in combustion process in gas-phase reactions.

61 citations

Journal ArticleDOI
TL;DR: In this article, the effect of the composite particles on the burning rate and flame structure of an ammonium perchlorate (AP)-based composite propellant was explored, and the results indicated that the high global burning rate of the propellant with the encapsulated catalyst is due to an accelerating effect on the fine AP/binder matrix burning rate, assumed to be caused by the intimate contact between the fine compound and catalyst.

57 citations

Journal ArticleDOI
TL;DR: In this paper, the latest synthetic advancements in the field of Fc-based BRCs, as well as highlighting their catalytic and anti-migration mechanisms are presented.

45 citations