Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [plasma]

The tag has no usage guidance.

2
votes
0answers
63 views

What was the nature of the visible part of the viscous wake trailing the Apollo CM during reentry?

This diagram suggests a helix in the wake, was it a single-helix, a multiple helix, or a superhelix? Is there any other part of the wake that would be visible?
3
votes
0answers
55 views

Orion reentry plasma

Below are two screen shots from the video of the Orion reentry, Astronaut’s-Eye View of NASA’s Orion Spacecraft Re-entry, and a diagram. Is the plasma contained, or primarily within the viscous wake, ...
1
vote
0answers
23 views

Converting Discharge Voltage to Temperature? Hall Effect Thruster Calculation

Trying to follow a Hall Effect Thruster design process given in this video: Hall Effect Thruster Design Video In 25:59, there's a calculation in which the presenter takes discharge voltage and ...
5
votes
1answer
186 views

What is the nature of a “flux tube” between Saturn and Enceladus, and what does “L‐shell=4” mean?

The NASA JPL YouTube video Sounds of Saturn: Hear Radio Emissions of the Planet and Its Moon Enceladus (below, also here) provides and audio and spectral representation of plasma waves recored by ...
4
votes
1answer
318 views

Is this description of the “dipole drive” and how it would work physically correct?

Comments in chat have noted the recent post in the Centauri Dreams blog titled The Dipole Drive: A New Concept for Space Propulsion. In contrast to the single positively charged screen employed by ...
2
votes
0answers
65 views

How much electricity is needed to run a magnetoplasmadynamic thruster?

I am making a small Magnetoplasmadynamic thruster (MPT) which uses compressed air as propellant. I want to know how many volts of electricity would be needed such that the exhaust plasma velocity is ...
6
votes
3answers
424 views

If Steve is at 300 km, and SWARM is >440km, how did SWARM measure Steve's temperature?

How did ESA measure Steve's temperature using the SWARM spacecraft? Please explain how the measurement is really done, don't just mention an instrument's acronym. I did a quick dump of TLEs for ...
10
votes
1answer
538 views

Could Steve have hurt the ISS?

The BBC News article Aurora photographers find new night sky lights and call them Steve says: A group of aurora enthusiasts have found a new type of light in the night sky and named it Steve. ...