The formulation and testing of new solid propellant mixture (DB+x%BP) for a new MEMS-based microthruster

Chaalane, Amar; Rossi, Carole; Estève, D.

doi:10.1016/j.sna.2007.04.029

Cited by 40 publications

(19 citation statements)

References 6 publications

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“…We measured the thrust force of this pressure wave using a micro-force sensor configuration (see Supplementary Fig. S13) to be substantially higher per total propulsion system mass than many other comparable microthrust generators in the literature [35][36][37][38][39][40] . The MWNT array was placed either normal or parallel to the force sensor surface, and immobilized in both directions during testing.…”

Section: Experimental Geometries and A Histogram Of Reaction Front Vementioning

confidence: 99%

Chemically driven carbon-nanotube-guided thermopower waves

et al. 2010

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Theoretical calculations predict that by coupling an exothermic chemical reaction with a nanotube or nanowire possessing a high axial thermal conductivity, a self-propagating reactive wave can be driven along its length. Herein, such waves are realized using a 7-nm cyclotrimethylene trinitramine annular shell around a multiwalled carbon nanotube and are amplified by more than 10(4) times the bulk value, propagating faster than 2 m s(-1), with an effective thermal conductivity of 1.28+/-0.2 kW m(-1) K(-1) at 2,860 K. This wave produces a concomitant electrical pulse of disproportionately high specific power, as large as 7 kW kg(-1), which we identify as a thermopower wave. Thermally excited carriers flow in the direction of the propagating reaction with a specific power that scales inversely with system size. The reaction also evolves an anisotropic pressure wave of high total impulse per mass (300 N s kg(-1)). Such waves of high power density may find uses as unique energy sources.

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Section: Experimental Geometries and A Histogram Of Reaction Front Vementioning

confidence: 99%

Chemically driven carbon-nanotube-guided thermopower waves

et al. 2010

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“…Research groups build devices with various applications of small scale combustor, such as micro burners have been integrated with thermoelectric [5,6] and thermophotovoltaic [7][8][9] for power and energy applications. Other micro combustion applications include micro propulsion [10,11], calorimetry [12], and carbon-isotopic analysis in biogeography [13,14]. As the prospect of small scale combustion is for producing energy at small scales, there are issues related with it.…”

Section: Introductionmentioning

confidence: 99%

Vortex combustion and heat transfer in meso-scale with thermal recuperation

Khaleghi

Hosseini

Wahid

2015

International Communications in Heat and Mass Transfer

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“…The concept of a solid propellant thruster is to generate thrust by expelling the hot gases of a burning propellant from an engine. A number of excellent studies have demonstrated and quantified the operational capabilities of miniaturized solid propellant thrusters using a variety of propellant combinations and engine designs [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The potential advantages of miniaturized solid propellant thrusters in comparison to alternative propulsion systems include high reliability, simplicity, and minimum component footprint (with respect to weight, volume, and power demands).…”

Section: Introductionmentioning

confidence: 99%

“…Miniaturized thrusters loaded with CuO/Al and Bi 2 O 3 /Al nanothermites have produced thrusts with specific impulses (a metric of thrust efficiency) of 25 s and 41 s respectively [1,2]. Although specific impulses of greater than 200 s have been measured for conventional propellants loaded in large rocket engines, the substantial energy losses inherent with miniaturized rocketry inhibits specific impulses for the same propellants to generally beneath 20 s [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]31]. The specific impulses measured for nanothermites were therefore respectable in the context of miniaturized rocketry, but the nanothermites were prepared without using a binder or assembly agent, and thus phase separation of the fuel and oxidizer likely reduced thrust efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrocellulose Gasifying Binder on Thrust Performance and High‐g Launch Tolerance of Miniaturized Nanothermite Thrusters

Staley

Raymond²,

Thiruvengadathan

et al. 2014

Propellants Explo Pyrotec

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Nanothermites are promising propellants for miniaturized thruster applications, but in their pure state can be very sensitive to ignition stimuli and prone to phase separation. Consequentially, a need exists for desensitizing binders that do not inhibit nanothermite thrust performance. We investigate the effects of incorporating small weight concentrations of nitrocellulose as a gasifying binder in bismuth trioxide‐aluminum nanothermites. Thrust measurements revealed improvements in specific impulse up to 63.2 s using nitrocellulose. The launch tolerance of the nanothermites in response to high‐g acceleration was also explored and substantial improvements were realized for nanothermites prepared with nitrocellulose. As small as 5 % nitrocellulose content suppressed the sensitivity of the nanothermites to less than 1 % ignition probability after exposure to 30 kg acceleration events. Some nanothermite charges experimentally survived up to 90 kg loads. Most importantly, nitrocellulose predictably modulated the thrust performance and ignition sensitivity of the nanothermites as a function of weight content. Employing nitrocellulose as a binder, high performance nanothermite propellants can be synthesized for miniaturized thruster applications with tailored impulse generation and ignition sensitivity.

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The formulation and testing of new solid propellant mixture (DB+x%BP) for a new MEMS-based microthruster

Cited by 40 publications

References 6 publications

Chemically driven carbon-nanotube-guided thermopower waves

Chemically driven carbon-nanotube-guided thermopower waves

Vortex combustion and heat transfer in meso-scale with thermal recuperation

Effect of Nitrocellulose Gasifying Binder on Thrust Performance and High‐g Launch Tolerance of Miniaturized Nanothermite Thrusters

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