Magneto-Hydro-Dynamis Propulsion

  • Thread starter Thread starter portinari232
  • Start date Start date
  • Tags Tags
    Propulsion
Click For Summary
SUMMARY

Magneto-Hydro-Dynamic (MHD) propulsion operates by applying an electromagnetic force to a conductive working fluid, such as seawater. In a square channel, two conductors create a potential difference, inducing a current (I) through the fluid, while a magnetic field (B) is applied across the other two faces. The propulsive force generated is defined by the equation F = I x B, based on the Lorentz force principle. Additionally, similar propulsion systems like magnetoplasmadynamic (MPD) propulsion utilize coaxial electrodes to achieve axial propulsion through self-inductance.

PREREQUISITES
  • Understanding of electromagnetic principles, specifically the Lorentz force.
  • Familiarity with conductive fluids and their properties.
  • Basic knowledge of propulsion systems and their mechanics.
  • Awareness of magnetoplasmadynamic (MPD) propulsion concepts.
NEXT STEPS
  • Research the principles of Lorentz force in electromagnetic systems.
  • Explore the properties and applications of conductive fluids in propulsion.
  • Study the design and functioning of magnetoplasmadynamic (MPD) propulsion systems.
  • Investigate real-world applications of MHD propulsion in marine and aerospace engineering.
USEFUL FOR

Engineers, physicists, and researchers interested in advanced propulsion technologies, particularly those focusing on electromagnetic propulsion systems.

portinari232
Messages
2
Reaction score
0
This is my first post on this forum, but i have browsed through this website a bit and found it very interesting so i thought i'd post a new thread... so here goes:


Can someone please explain how MHD Propulsion works. I saw a little bit of a show about this on the Science channel recently but was unable to grasp it completely.
 
Engineering news on Phys.org
MHD propulsion works by applying an EM force to a conductive working fluid, like sea-water.

ele.unipv.it/~fis/fisica2mn/barca_a_prop_MHD.pdf

In a square channel two opposite faces employ two conductors with the a potential difference applied. This induces a current (I) flowing through the working fluid. On the other two faces a magnetic field (of strength B) is applied.

The propulsive force is proportional to IxB, by virtue of the Lorentz force, F = q(v x B) or written another way, F is proprotional to I X B.

I am not sure if you are asking specifically for this example, but there are other propulsion systems, e.g. magnetoplasmadynamic (MPD), using a similar principle but in the form of coaxial electrodes.

In this case, the current flows radially, and making use of self-inductance, the I x B forces propels the plasma axially.
 

Similar threads

Replies
10
Views
4K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 15 ·
Replies
15
Views
3K
  • · Replies 18 ·
Replies
18
Views
3K
Replies
5
Views
4K
Replies
7
Views
3K
  • · Replies 22 ·
Replies
22
Views
4K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 21 ·
Replies
21
Views
2K