Tuesday, November 12, 2013

FSI Seminar November 13

Florida Space Institute Seminar Announcement

Speaker: Weiwei Deng
Affiliation: UCF/MMAE
Day and Date: Wednesday, November 13, 2013
Time: 11:00 - 12:00

Location: Research Park
12354 Research Parkway
Partnership 1 Bldg. Suite 209
Orlando, FL 32826

Title      Multiplexed Electrospray and Its Application in Space Propulsion
 Electrospray is an emerging technique widely used in advanced materials processing and recently in space propulsion. Electrospray can atomize liquids into quasi-monodisperse droplets in a wide size range (from micrometers to essentially ions). One main drawback of the electrospray is the low flow rate emitted by each source. I will discuss our research in multiplexing the number of electrospray sources by 1000 times and potentially more. The scalability we demonstrated enables large scale applications such as roll-to-roll fabrication of organic solar cells. I will highlight the application of multiplexed electrospray in space propulsion. Currently electrospray is being actively pursued by several groups as an efficient method for space propulsion due to the superior specific impulse provided by electrospray operated in the ionic regime. However, a remaining critical challenge is to ensure sufficient fluid dynamic impedance through each nozzle that regulates the flow rates. We took a new approach and microfabricted dense cylinder array inside the fluidic channels to increase the flow impendence. This method may lead to scalable thrust as well as vectoring capability.
.For further information please click below:
Ashley Kehoe / Josh Colwell
Department of Physics
Phone: 407-823-6306

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