What's the most mass efficent beemed power reciever... Jul 27, 2019 15:22:57 GMT
Post by airc777 on Jul 27, 2019 15:22:57 GMT
...for producing electricity at the target, not thrust directly.
It's occurred to me that I didn't know how this process is actually done when I was trying to calculate efficiency losses.
Original context was a hypothetical carbon neutral commercial aircraft via a method of a geostationary solar power plant and laser beamed power and electric ducted fans. When doing the math I didn't know how best to get the power out of the laser while preserving the trust to mass ratio of the system. I assume it's too much energy density to use photovoltaic receivers, and too mass inefficient to use a target thermal mass attached to a Stirling engine.
Would high directivity microwaves be better for this application then lasers? My assumption was that the microwave receiver target area would be just entirely too big to be used to power a single aircraft that was intended to transport passengers and potentially fly over populated areas.
It's also occured to me that there are just too many steps in the above described process and it would probably be better to have the aircraft propelled via a thermal-ramjet. Then you could also probably use the engine housing as your target thermal mass with some heat pipes equalizing temperature around the combustion chamber. (Is that the right world to describe the inside of a thermal-ramjet?) Because it's a ramjet it would need to be accelerated up to speed to function, my proposed carbon neutral solution to that was just massive linear actuator catapults in the runway.
Unrelated: but can we get some beamed laser resistojet missiles in CoaDE? I suspect it could help my laserstars time-to-kill after the targets ciws has been disabled.
Second edit: It's occurred to me that 'thermal-ramjet' was a more accurate descriptor then 'resisto-ramjet'.