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[vid] testing contrarotating prop distance

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[vid] testing contrarotating prop distance

Old 09-24-2020, 04:17 AM
  #1  
ron_van_sommeren
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Default [vid] testing contrarotating prop distance

Probably a bit over the top for RC, and a little bit scary as well. But o.t.o.h. RC gets feathers up its rectum (too Dutch? )
Robert Llewellyn impressed by RC outrunners. The actual test starts @12m40s, determining optimal coaxial setup distance.
Not quite Scrapheap Challenge



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Last edited by ron_van_sommeren; 09-24-2020 at 08:37 AM.
Old 09-24-2020, 05:01 AM
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ted32776
 
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Saw this last year. Awesome plane, I'm wondering how the project has progressed since. I still want to see actual thrust/efficiency data reflecting ideal contra prop spacing instead of a clown being amazed that propellers produce airflow, who knew! I love the "eye protection" as if slinging off one of these props in this environment merely offered a threat of eye damage. Still, I'm wondering if the RC community has spent much effort in determining optimal contra prop spacing. I've only seen the result of a natural effort to reduce packaging size and therefore weight but nothing [except perhaps in Indoor Pattern] where spacing was addressed.

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