The grand sum of $49.98, less amusement tax, is offered to the first person who comes up with a practical solution to the following very simple rotorcraft problem.
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The Problem ~ Rotor to Rotor Vibration: How to eliminate the rotor to rotor induced vibration, in helicopters with overlapping twin-rotors by somehow temporarily increasing the pitch [and thereby maintain a consistent angle of attack] on the blade
(or its individual elements) as it
(they) passes through the downwash from an upper blade and through the downdraft from a lower blade.
The Solution How to get rid of the problem.
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Contest Conditions: 1/ For reasons of economy,
and cheapness, the prize is in Canadian dollars; 'cause they're half way between a US dollar and a Monopoly dollar.
2/ No more than 20 submissions per person.
3/ Second prize is $49.98, in Monopoly dollars.
Dave J
