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Old 25th Feb 2014, 21:37
  #30 (permalink)  
IFMU
 
Join Date: Mar 2005
Location: Poplar Grove, IL, USA
Posts: 1,112
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When I was a kid I did a few laps around a balloon while flying a PA12. That calibrated my brain on what zero airspeed looked like aloft. Upon landing I was offered a ride in an RV4. The pilot saw the PA12 out flying, and did a few laps around it. The two speed differentials matched, and from the back seat of the RV4 it gave a strong illusion that the PA12 was floating along at zero airspeed.
Bryan
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