Postcard DE-13017873

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travel time 15 days
distance traveled 4,990 miles
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postcard image of DE-13017873
Starfevre, United States of America
Starfevre Postcrossing Supporter said:
posted 11 months ago

Helicopter CFD?
WilhelmNottbohm, Germany
WilhelmNottbohm said:
posted 11 months ago

yes indeed - pictured are the vortices generated by the operation of the rotor
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