Daily Creativity: Mars

Mars_smMars! Isn’t it great? The planet I mean. I love space, and have been wanting to explore painting some of the planets and heavenly bodies. I thought I’d start with water colors, and work my way up to oil paints. Each medium gives me something different to explore, with oils being rich and deep while watercolors have a lightness that can work for things that you want to have a glowing feel to them. Plus I love how I can layer colors with watercolors. While Mars may not be right for watercolors, I wanted to do Mars first. Partly because Opportunity is almost done with her marathon and finding awesome data for us, and partly because it’s one of my favorite planets. Of course choosing a favorite planet is like choosing a favorite child, it’s not really something I can do.

Yes, I am a mega nerd when it comes to space. I love it. I have loved space since I was a kid. I remember watching Space Camp, the movie, and thinking that would be awesome! Of course I never think about my fear of enclosed spaces, and space travel requires that.

Watercolors on paper. 3/10/2015 (Yes the date on the actual painting is slightly wrong, I looked at the date on my phone not realizing it passed midnight, as I count dates for projects is it’s still today if I haven’t gone to bed yet.)

Answers from the Vault: I answer YOUR questions….on Mars!

A beautiful view of Mars, from Wikipedia and NASA

“What would the wingspan of a glider on Mars be?”

Flying on Mars is tricky.  I know, I’ve done it.  Well, that is to say, I’ve done it in a simulator.  Because a flight simulator is nothing but a giant physics engine with a bunch of mathematical constants plugged in, its possible to have the simulator spit out the atmospheric conditions of almost anywhere, and then re-create it.  X-Plane, by Laminar Research is perhaps the best such flight sim available on the commercial market, and using some NASA atmospheric and geographical data, allows you to recreate flying on Mars in a pretty believable way.

Wings (airfoils) only work when the air current flows over them at a certain speed.  That speed is dependent on the airfoil shape, and is subject to a lot of heavy math well above my humble head to try and figure out.  If the speed of the flow over the airfoil gets too low, it stops generating lift.  This is called a stall, and is generally bad news for whatever the airfoil is attached to, that is: the rest of the plane with you in it.  So a certain speed needs to be maintained in order to stay in the air.  With a powered airplane, the engine provides that forward speed.  In a Helicopter, the rotation of the blades provides the lift, and in a glider it is gravity pulling the plane downwards that provides the lift.  Let’s throw a theoretical number out there.  Imagine that Glider X needed to maintain a minimum speed of 20 miles per hour in order to stay airborne.

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