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I've understood it has solar panels. But what would be the reason they didn't put a nuclear battery on board? That would work for years. If the direct output p
by yason 12y ago
I've understood it has solar panels. But what would be the reason they didn't put a nuclear battery on board? That would work for years.
If the direct output power of the nuclear battery was too low, it could still be used to charge the rechargeable battery until it can make the lander do work again for a few hours/days.
- skywhopper 12y agoNuclear batteries are 1) heavier, 2) more expensive, 3) politically complicated.
- Someone1234 12y agoAtomic batteries aren't really controversial or politically sensitive and have been used to great effect by many nations involved in space travel. There's some problem with Tritium expose if the craft exploded on launch but those haven't really stopped it usage.
- adestefan 12y agoThe issue is getting the plutonium.
- virtue3 12y agonasa almost used up the last bits of our reserves of it for the last mars lander. Thankfully it appears that the united states department of energy is re-visiting generating plutonium-238 for NASA: http://en.wikipedia.org/wiki/Plutonium-238#United_States_supply http://en.wikipedia.org/wiki/Plutonium-238#United_States_sup...
- protomyth 12y agoYet another reason to build thorium reactors since the "waste product" is PU-238.
- noselasd 12y agoIt's been developed for spacecraft use by Russia, China and the US, that's it. It IS politically sensitive in Europe.
- NamTaf 12y ago4) Rare and are designed to last ages, whereas this thing will burn up far earlier, wasting the rare ingredients.
- jsmthrowaway 12y agoThat was asked during the early hours of the power "uh oh" phase, and someone involved replied that Europe has no ability to manufacture RTGs for political reasons. I can't link the source but it was a tweet.
- nightpool 12y agoI've seen it a few places that they mentioned in the press conference that (mostly for political reasons) there has been almost no development of RTGs in Europe at all so it simply weren't an option.
- ChrisAntaki 12y ago> what would be the reason they didn't put a nuclear battery on board Not every launch makes it to space.
- sondr3 12y agoI also heard from reddit that they didn't want to have radiation contaminate the area where Philea landed, apparently it's a bit hard to keep all of it inside of the lander.