1
$\begingroup$

Yes the answer is zero now because they are weightless, but I used past tense. In any event, let's try to find a good, reliable source for each spacecraft's mass and whether that number is dry or fully-fueled.

The interesting question NanoSat/Small Satellite World Record got me thinking about the MarCOs. eoPortal's MarCO (Mars Cube One) includes the graphic below, likely from some NASA presentation. It includes the following:

MarCO Overview:

  • Volume: 2 x 6U (12 x 24 x 36 cm)
  • Mass: 14.0 kg
  • Power Generation:
  • Earth: 35 W
  • Data Rates: 62-8,000 bps
  • Delta-V: > 40 m/s

The first line gives the volume for TWO MarCO satellites (2 x 6U) so I can't figure out for sure if the 14 kg applies to the pair or to each. I'm guessing that the next line's 35 W applies to only one, so maybe each was 14 kg.

That would make the cubesat's density about 0.75 g/cm^3 which seems awfully low already considering I've speculated at something like 1.6 kg/U in Cubesat mass density (kg/U) statistics?

It's also not clear if that's dry weight or with its fire extinguishers thrusters fully loaded.

Question: Is there any independently reported mass for one MarCO satellite? If so, is it for dry or fully-fueled and loaded conditions?


Figure 4: MarCO flight system overview (image credit: NASA/JPL)

Figure 4: MarCO flight system overview (image credit: NASA/JPL)

$\endgroup$

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.