Magnetoaerodynamics

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Magnetic control of plasma flow

plasmacraft.bmp

Does the b-2 have a "cloak" that helps its passive stealth qualities? It supposedly uses electromagnetic wave around the plane, sounds like plasma stealth principle minus the heat and easy visibility. Apparantely the B-2 cannot use its sensors at all while its on, so it is only used in a combat setting.

Magnetoaerodynamics includes some groundbreaking computational and experimental work with plasmas. The nature of the work ranges from today's practical applications to physics research and tool development that will be used tomorrow.
Magnetoaerodynamics(Magnetic control of gas flow and combustion).
Any questions or comments about magnetoaerodynamics or this website Email Me, let's talk about it....

plasmastealth.bmp

Many aviation enthusiasts have heard about the so-called "plasma stealth": using ionized gas to reduce the radar cross section of an aircraft. Some consider this to be science fiction - a Romulan cloaking shield. However, sarcastic remarks aside, "plasma stealth" is quite real. At least in theory. Interactions between EM radiation and ionized gas have been extensively studied for a variety of purposes ranging from radio communications to astrophysics.

Plasma stealth technology
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spaceprobeplasma.jpg

An artist's concept of a space probe inside a magnetic bubble (or "plasma sail"). Charged particles in the solar wind hit the bubble, apply pressure, and propel the spacecraft.

space probe inside a magnetic bubble or plasma sail
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In one experiment, at Mach 1.4, the shock wave COMPLETELY DISAPPEARED FROM
VIEW (emphasis added by me)".

So there you have it, complete disappearance of a shock in a supersonic flow!

Quite interesting!

However, before you all go out and go crazy, these AIAA papers weren't
classified, or even held as proprietary by Northrop. Which indicates to
me that research is as far as it went, at the time.

Also from the halls of the WIERD (but very interesting). There is another
field, called Magnetoaerodynamics, that was oriented around the same
application.

supersonic flow and magnetoaerodynamics
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magnetoaerodynamics [PLASMA PHYSICS] Study of the properties and characteristics of, and the forces exerted by, highly ionized air and other gases; applied principally to study of reentering ballistic missiles and spacecraft. - McGraw-Hill Encyclopedia of Science & Technology.

Studies done several years ago at the Jet Propulsion Laboratory showed that trips to the stars in reasonable times are feasible with the knowledge we have today using staged fission or fusion propulsion systems both of which are under development. A tremendously large body of data connected with magnetoaerodynamics even suggests we might be able to build something very much like the reported UFO's -- and also solve many of the problems of high speed flight and produce the electromagnetic effects so frequently associated with UFO sightings. "It's impossible" is said instead of "We don't know how."
BY STANTON T. FRIEDMAN, NUCLEAR PHYSICIST

Click to see London UFO video

STATEMENT BY STANTON T. FRIEDMAN
B.Sc. -- Physics, M.Sc. -- Physics, University of Chicago 1955, 1956.
Mr. Friedman has a relatively unique background in advanced technology, having been actively involved in the development of all of the following advanced systems: nuclear aircraft, nuclear power for space, terrestrial nuclear power, nuclear rockets, fusion rockets.

There is an enormous amount of work available concerned with magnetoaerodynamics. I received a NASA bibliography with more than 3000 references. Ref. 39 contains abstracts of more than 800 publications dealing with interactions between vehicles and plasmas. Much of this work is classified because ICBM nose cones are surrounded by plasmas. In any event, there is a body of technology which I have studied and which leads me to believe that an entirely new approach to high speed air and space propulsion could be developed using the interactions between magnetic and electric fields with electrically conducting fluids adjacent to the vehicles to produce thrust or lift and reduce or eliminate such other hypersonic flight problems as drag, sonic boom, heating, etc. These notions are based [on] existing technology such as that included in Ref. 40 through 49 though one would expect that a considerable development effort would be required.

23. Have any electromagnetic propulsion systems been operated?

So far as I know no airborne system has been operated which depended on electromagnetic forces for propulsion. At Northwestern, turning on a magnet inside a simulated re-entry vehicle with a plasma around it resulted in a change in the color of the plasma and its location relative to the vehicle. However, an electromagnetic submarine has actually been built and successfully tested. It is described in some detail in References below.

FOOTNOTES
Literature Search No. 541, "Interactions of Spacecraft and Other Moving Bodies with Natural Plasmas," December 1965, Jet Propulsion Laboratory; 182 gages, 829 references.

Jarvinen, P. 0., "On the Use of Magnetohydrodynamics During High Speed Reentry," NASA-CR-206, April 1965.

Nowak, R. et al. "Magnetoaerodynamic Reentry," AIAA Paper 66-161, AIAA Plasmadynamics Conference, March 2-4, 1966.

Kawashima, N. and Mori, S., "Experimental Study of Forces on a Body in a Magnetized Plasma," AIAA Journal, Vol. 6, No. 1, January 1968. pp. 110-118.

Ericson, W., Maciulaitis, A. and Falco, M., "Magnetoaerodynamic Drag and Flight Control, Grumann Research Department Report, RE 282J, November 1965.

Smith, M. C., "Magnetohydrodynamic Re-entry Control," January 1965, Rand Corporation Memo, RM-4380-NASA.

Cambel, A. B., "The Phenomenological Aspects of Magnetogasdynamic Re-entry,." Presented at the 10th Midwestern Mechanics Conference, Colorado State University, August 1967.

Porter, R. W., and. Cambel, A. B., "Magnetic Coupling in Flight Magnetoaerodynamics," AIAA Journal, Vol. 5, No. 4, April 1967. pp. 808-805.

Kranc, S., Porter, R. W., and Cambel, A. B., "Electrodelees Magnetogasdynamic Power during Entry," Journal of Spacecraft and Rockets, Vol. 4, No. 5, June 1967, pp. 813-815.

Seemann, G. R., Cambel, A. B., "Observations Concerning Magnetoaerodynamic Drag and Shock Standoff Distance," Proceedings of the National Academy of Sciences, Vol. 55, No. 3. pp. 457-465, March 1966.

Porter, R. W., Cambel, A. B. "Comment on 'Magnetohydroynamic-Hypersonic Viscous and Inviscid Flow near the Stagnation Point of a Blunt Body,'" AIAA Journal, May 1966 952-953.



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