Slash Boxes

SoylentNews is people

posted by mrpg on Tuesday August 22 2017, @02:02AM   Printer-friendly
from the h-times-π-r² dept.

Researchers have improved the design of Cylindrical shaped Hall thrusters (CHTs), a type of ion drive used in spacecraft:

Researchers from the Harbin Institute of Technology in China have created a new inlet design for Cylindrical shaped Hall thrusters (CHTs) that may significantly increase the thrust and allows spaceships to travel greater distances.

[...] The researchers injected the propellant into the cylindrical chamber of the thruster by a number of nozzles that usually point straight in, toward the center of the cylinder. The angle of the inlet nozzles changed slightly, sending the propellant into a rapid circular motion and creating a vortex in the channel.

They then simulated the motion of the plasma in the channel for both nozzle angles using modeling and analysis software called COMSOL that uses a finite element approach to modeling molecular flow.

This resulted in a gas density near the periphery of the channel is higher when the nozzles are tilted and the thruster is run in vortex mode.

According to the study, the vortex inlet increases the propellant utilization of the thruster by 3.12 percent to 8.81 percent, thrust by 1.1 percent to 53.5 percent, specific impulse by 1.1 percent to 53.5 percent, thrust-to-power ratio by 10 percent to 63 percent and anode efficiency by 1.6 percent to 7.3 percent, greatly improving the thruster performance.

More likely to be deployed than EmDrive.

Effect of vortex inlet mode on low-power cylindrical Hall thruster (open, DOI: 10.1063/1.4986007) (DX)

Original Submission

This discussion has been archived. No new comments can be posted.
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
  • (Score: 2) by Immerman on Tuesday August 22 2017, @04:20PM

    by Immerman (3985) on Tuesday August 22 2017, @04:20PM (#557552)

    What makes you so sure the Chinese would share the information if it proved successful? The international space race is heating up again, and the EM Drive would give a massive advantage to whoever first perfected it. If by some miracle of a benevolent universe they conclusively proved that it worked, the government might declare it a state secret until such time as they had perfected it to the point that they were ready to colonize Mars, Europa, or wherever.

    Not that such a plan would necessarily work, even if the EM drive did, but why share an advantage with your opponent?

    Starting Score:    1  point
    Karma-Bonus Modifier   +1  

    Total Score:   2