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David Garvin's avatar

Fantastic article. Thank you for posting. I followed along with my K and E decilon, but I could have used my Aristo Scholar Nr 903

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John Pottle's avatar

Excellent post, fun problem!

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Mike Syphers's avatar

Thanks, John!

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Eamonn Gormley's avatar

Hi Mike, awesome application of the K and A scales - I hadn't seen this done before. Nice clear explanation also of how to calculate the duration of inter-planetary missions. The Martin Space Rule has a couple of dedicated scales on the back of the slide to do this same calculation. Using the approach you describe with the K and A scales gives the same results. Really great stuff.

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Mike Syphers's avatar

Thanks, Eamonn!

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Kurt H Dietrich's avatar

This is terrific. I calculated the chart of AU before reading on and checked my results with your chart when I continued reading. Then I calculated the T chart before reading on, and checked my results with your chart. Got it. Didn't get it back in college physics, but got it now. I was doing some practice math on a slide rule when I saw this and switched over to do this. Just terrific! Thanks., Kurt

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Mike Syphers's avatar

Thanks, Kurt. Glad you liked it. This was a fun one to write.

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Wolfgang Bode's avatar

Even if I didn't understand everything : awesome! "K is the cube of the square root of the number in A" - so clear now, but I never recognized it! Regards from Germany, Wolfgang Bode.

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Mike Syphers's avatar

Thank you, Wolfgang. And of course I must ask, might you be related to Johann?

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Wolfgang Bode's avatar

Who knows? The name is not as common as other names in Germany, the Bode is a river, I think that our ancestors came from their border. LGW

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