How do 'ax-heads' improve effiency on helicopters?

Subject: How do 'ax-heads' improve effiency on helicopters?

Date: Thu May 28 15:15:17 1998
Posted by Kaiser
Grade level: K-3
School: No school entered.
City: No city entered. State/Province: No state entered.
Country: US
Area of science: Engineering
ID: 896386517.Eg

Message:


Mad science:
           I saw in a recent issue of Popular Science that there was a 
helicopter called a EH-101 Merlin that had "axhead rotor tips, which improve 
lift and effiency."  How does it do that?

Re: How do 'ax-heads' improve effiency on helicopters?

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