( Concentrated ) Solar Thermal Rocket Series Part IX: Miscellaneous design notes

Going into a bit more detail all the time.  Is this getting serious?  Well, if I did do something about making this thing, it would take gazillions of dollars, which I don't have.  At the moment, I may make a few models to flesh it out a bit more.  Plus conduct a few experiments that may something like a proof of sorts.

Let's give it a shorter name because the title is getting too long.  Lets call it by an alphabet name.  Therefore, it will be CoaSTeR for Concentrated Solar Thermal Rocket.  Yay!  Yeah, it is a coaster all right.  It will "coast" from coast to coast like a sailing ship in the solar system!  Uh, not really.  From Earth to the Moon and Mars and back might do.

I like the sailing ship analogy.  Explorers crossed the oceans without internal combustion engines, or burning anything.  This ship will burn little or nothing.  It will be a truly green machine.

Design of heat exchanger:

• Find a way to deposit carbon on top of tungsten- don't like that tungsten is lustrous.  That means light will be reflected off of it.  That's not desirable, so this may be a solution for that problem. 
•  Put the ring close to the nozzle.  The heat exchangers would run back from the ring toward the hydrogen tank.  This would make sense as it would be the coldest part of the heat exchanger which would meet the cold, cryogenic hydrogen to be heated up.  It would heat up and get to the ring where it would be the hottest.  Hopefully, it can be really, really hot at the nozzle.  Like 2600 deg. Centigrade type of of hot.
•  The diameter of the hydrogen fuel line would be 1/8 inch- comparable to auto running all out.  Don't know how much in diameter the ring should be or the nozzle.  Compare the nozzle size to the exhaust pipe of an auto, but that seems too small.  The auto reference is because this "engine" will be about as powerful as a sport car engine. 

Design of mirror system

• Idea: put arm that positions mirrors on fuel tank- arm would have wide range of motion- as would individual mirrors
  Note that planets revolve around the equatorial plane of the sun, approximately.
• Note also that engine thrust would be somewhat parallel to the path of the orbits of planets.  The would put the sun to the "right" or "left" side.
• Concepts of three dimensional space need to be reviewed.  Mirrors have to be positioned correctly in order to track the sun.

Update:

This is where the series gets a little more organized with a name: "Coaster", and a number tag.  This is number 9 in the series, which continues to 18.

The first post that starts it all off is here.   It did get a name at the beginning: Solar Thermal Rocket series, so excuuuuuuuse me.