Stories
Slash Boxes
Comments

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This discussion has been archived.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: 3, Insightful) by Runaway1956 on Tuesday August 22 2017, @02:15PM

    by Runaway1956 (2926) Subscriber Badge on Tuesday August 22 2017, @02:15PM (#557512) Homepage Journal

    "simulated the motion of the plasma in the channel for both nozzle angles using modeling and analysis software"

    Models are all well and good - but Grandma said that the proof is in the pudding. Build one, and show us what it can do. That model flying around in your computer simulator isn't doing anyone any good, except paper writing people.

    --
    There is a supply side shortage of pronouns. You will take whatever you are offered.
    Starting Score:    1  point
    Moderation   +1  
       Insightful=1, Total=1
    Extra 'Insightful' Modifier   0  
    Karma-Bonus Modifier   +1  

    Total Score:   3