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9 votes

Is lunar exploration going to need a whole heck of a lot of RTGs? If so, have they started firing up the RTG-making reactors yet?

We Won't Use RTGs A 100-500 watt RTG would be wholly inadequate to power a lunar rover with people in it. This paper describes the energy consumption of the Lunar Roving Vehicle used by Apollo: ...
Dan Hanson's user avatar
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5 votes

Is lunar exploration going to need a whole heck of a lot of RTGs? If so, have they started firing up the RTG-making reactors yet?

The previous answer is great. However as noted in the comments there is a 2 week long night on the moon. Yes yes even though the daytime is also quite long, the nighttime is long enough to disrupt ...
DialFrost's user avatar
  • 1,673
4 votes

What are these two little valve stem-like projections from the Northrop Grumman STAR 15G upper stage rocket motor? Why doesn't the STAR 20 have them?

Note many other motors in the catalog have those features (non exhaustive list: STAR 13B, STAR 17A, STAR 27H) They are igniters as shown in this drawing of the STAR 27H from The IBEX Flight Segment ...
Organic Marble's user avatar

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