HELICOPTER ROTOR SYSTEM Russian patent published in 1997 - IPC

Abstract RU 2090451 C1

FIELD: helicopter rotor systems. SUBSTANCE: helicopter rotor system includes any number (but no less than two) of blades of different length. Blades of similar length are secured in opposite chutes of main rotor hub. Length of shorter blades is determined from relationship given in Description. EFFECT: enhanced efficiency of helicopter power plants through reduction of induced drag of rotor blades. 3 cl, 2 dwg

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RU 2 090 451 C1

Authors

Pchelkin V.M.

Kirjukhin A.I.

Dates

1997-09-20—Published

1994-04-29—Filed