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Message: <blockquote data-quote="imhotep" data-source="post: 26157545" data-attributes="member: 562115">You seem to have got things mixed up. I never commented on Perseverance Rover's technology. Of course the Curiosity was designed more than a decade ago, the technologies here on Earth changed a lot and also NASA learned much from the near 10 year experience with the Curiosity Rover. I just commented on an observation by another member that the Perseverance even has an atomic power supply. Just wrote that it's not new but the same as that on Curiosity. You are talking about the tyres.... I am aware that they changed the width, diameter and the treads.Just FYI, the power unit of the Rovers is not built by NASA at all. These has always been the DOE responsibility. Their scientists manufacture these units. As I said before, Radio Isotope Power unit technology itself is more than 50 years old, invented in the US. Even the Russian Lunokhod 1 & 2 and the Chinese lunar landers used this technology.This is not to say that NASA was idling.... They have developed a unit named the Advanced Stirling Radioisotope Generator (ASRG) that can deliver four times the power than the current units per weight of the radio active material used. But it provides less heating that's needed in cold environments. Also there is the MHW (multi Hundred Watt RTG) under development. But these are not ready yet.As you said I fully admit that I know nothing about design improvement... You are the expert. So could you please list the design improvements made on the Curiosity's MMRTG and the current Persevererance MMRTG.  <img src="/styles/default/xenforo/smilies/default/yes.gif"  class="smilie" loading="lazy" alt=":yes:" title="Yes    :yes:" data-shortname=":yes:" /></blockquote>

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