Composites May Be Key as Aircraft Propellers Become More Complex

Lockheed Martin C-130H
Collins Aerospace says the eight-blade NP2000 composite propellers on the Lockheed Martin C-130H enable more traction for a given propeller diameter.
Credit: Collins Aerospace
Propeller manufacturers are increasingly turning to composites as new designs incorporating larger numbers of blades emerge for both new products and retrofit. “Hartzell has decided to focus exclusively on [the development of] composite blades and spinners at this point in time,” says J.J. Frigge...

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