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Space Exploration Vehicle model?

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  • Member since
    March 2018
Space Exploration Vehicle model?
Posted by workerchimp on Monday, March 26, 2018 12:12 PM


Does anyone know if there might be a kit planned for the new space exploration vehicle? This would be really cool one to add to a moon diorama scene.

Space Exploration Vehicle

  • Member since
    April 2004
  • From: UK
Posted by Jon_a_its on Tuesday, March 27, 2018 6:15 AM

Top Gear (UK) did a road test with Captain Slow, James May with these vehicles.

East Mids Model Club 32nd Annual Show 2nd April 2023

Don't feed the CM!


  • Member since
    October 2004
  • From: Orlando, Florida
Posted by ikar01 on Saturday, July 21, 2018 2:48 PM

Josh Gates got a chance to drive one on his show, Expedition unknown.

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Sunday, July 22, 2018 11:19 AM

I wonder why are the wheels/tires so small? Are we planning on exploring a giant salt flat planet somewhere? Huh?

Or maybe one with an existing road infrastructure? Geeked

  • Member since
    November 2005
  • From: Formerly Bryan, now Arlington, Texas
Posted by CapnMac82 on Sunday, July 22, 2018 5:52 PM

I wonder why are the wheels/tires so small?

Well, potential bodies for exploration are all significantly less than 1G.

Moon is 0.15G (1/6); Mars is 1/3 (.037G).

So, you can get acceptably low ground pressures with significantly smaller contact surfaces.

There's a corollary issue that you also need to have enough ground pressure to actually have traction in extraterrestrial locations.  Which is complicated as you want the vehicle to have as little mass as possible, just to decrease the tare weight to have to lift.

Let's say the Earth weight of the thing is 100KG, on Mars it's only 37KG, for 4 wheels that's only 9.25kg each; for 6, it's 6.16KG each.  If the contact patch is 10x10cm would only be ±62grams per square cm.

A "springy" tire is handy as it's less complicated than suspension equipment, which is middling important for human drivers/occupants.  So, tires are better than rollers (torsion bar geometry is complicated in low-G environments, too.)

  • Member since
    February 2012
Posted by Liegghio on Sunday, July 22, 2018 8:51 PM

Those may be test wheels only for use in 1g gravity and the wheels will be different for lower gravity planets. I think the original lunar rovers didn’t have exactly the same metal mesh wheels for earth testing, as the ones used on the moon.

  • Member since
    November 2005
  • From: Formerly Bryan, now Arlington, Texas
Posted by CapnMac82 on Monday, July 23, 2018 7:31 PM

The aboce is an excellent point.

My quick search did not turn up a lot of details on the earth-bound rover trainer.


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