Advanced Stirling Radioisotope Generator (ASRG). Thermal Power Model in MATLAB®. NASA/TM— August jsp. The Advanced Stirling Radioisotope Generator. Evan Long February 11, Submitted as coursework for PH, Stanford University, Winter Jan 23, Lockheed, the prime contract on the now-defunct Advanced Stirling Radioisotope Generator program, is closing out the project and transferring.

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A conceptual design for a New Frontiers mission to Io. These energy sources all involve circulating heat, commonly via a fluid. These cuts fall always on the same side. What can I do?

Radial core heat spreader to improve Stirling radioisotope generator heat rejection

Leave a Comment You must be logged in to submit a comment. Registration is free, and takes less than a minute. I read that the dust stirlint magnetic, so maybe there’s a way to exploit this fact. This is very effective in lean times. One potential technology gap is the waste heat rejection approach for higher power Stirling convertors. This design sacrifices energy efficiency for mechanical simplicity; since maintenance is impossible on afvanced mission of duration and distance sufficient to justify such a power source, it is best to eliminate moving parts wherever possible.

The experimental RCHS weighs about grams and is designed to transfer W thermal from the hub to the radioisktope. The design and operation of such devices has been thoroughly covered in previous reports.

Keep in mind that it doesn’t need to be fast: While the average person associates boiling with cooking dinner, the process is also widely used to transfer heat across surfaces. It simply appears to not be important enough… to anyone except outer planets researchers.


The Voyager 1 mission launched 40 years ago, and it still has power. All other rights, including commercial rights, are reserved to the author. For full functionality of this site it is necessary to enable JavaScript.

Ultimately the question is do we want a balanced exploration program or just a Mars program. A NASA spaceship is zooming toward the farthest, and quite possibly the oldest, cosmic body ever photographed by humankind, a tiny, distant world radioiotope Ultima Thule some four billion miles 6. Enzo, The Spirit and Opportunity rovers both use Pu heaters to keep from freezing. Unfortunately, it goes down with the square of the distance from the sun.

Japan holds nearly radioisotkpe tons in various storage facilities and nuclear reactors across the country.

Because of the limited radioiotope cap imposed on these missions, they’re now essentially limited to the inner solar system. The critical difference between the ASRC and prior generations of radioisotope thermoelectric generators is that it uses an oscillating piston to manage heat flow to and from the hot and a cold reservoirs. NASA cancelled the progarm, taking the produced hardware and design and using the savings to support Pu production; given that missions will be forced to rely on less efficient systems, requiring more Pu, for a greater time than expected, then this is a sensbile move.


John Burch nicely sums up the different factors I was more hinting at. So, it would appear that we agree with the cleaning solar panel prospect. However, I think it is logical to have redundant systems where possible and the nuclear option seems to me to be a proven option.

The Advanced Stirling Radioisotope Generator

The sounding rocket flight test proved that the RCHS could maintain proper thermal control during hypergravity and microgravity regardless of the orientation of the device relative to the launch forces.

The amount of heat released is proportional to the amount of the radioactive core remaining, so isotope selection must be informed by the intended mission duration. The hazards of launch obviate a number of other potential solutions that are too vulnerable to the G-forces or vibration loads incurred while reaching orbit.

Stocks came from now-depleted Cold War-era reserves and from Russian sources.

So if there’s not gonna be many Outer missions anyway seems givenand to less Pu-sapping destinations than Pluto, and if some possibly tiny? This is pretty bad. And, because it had been going on for years, there was no guarantee that it would be fixed any time soon.

We have given direction to the Department of Energy, which manages the flight procurement, to end work on the flight gfnerator.