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COMPOSITE MAIN ROTOR BLADE FOR THE 214 HELICOPTER

Robert G. Anderson, C. E. Covington

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Abstract

An all-composite blade has been developed for the Bell Model 214 transport helicopter. This blade was selected for development because the recent introduction of the 214 into service makes this composite blade a good candidate for production. The blade was designed to fit the standard 214 rotor without hub modification or degrading the aircraft’s auto-rotational capability. Development of the blade included numerous design support and manufacturing tests. Five blades were built; one has been fatigue tested and a pair were flight tested. Flight loads were lower than with the metal 214 blade and the limited fatigue testing conducted to date indicates greater fatigue strength.

About this research paper

What this paper is about

An all-composite blade has been developed for the Bell Model 214 transport helicopter. This blade was selected for development because the recent introduction of the 214 into service makes this composite blade a good candidate for production. The blade was designed to fit the standard 214 rotor without hub modification or degrading the aircraft’s auto-rotational capability. Development of the blade included numerous design support and manufacturing tests. Five blades were built; one has been fatigue tested and a pair were flight tested. Flight loads were lower than with the metal 214 blade and the limited fatigue testing conducted to date indicates greater fatigue strength.

Why it matters

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Available abstract

An all-composite blade has been developed for the Bell Model 214 transport helicopter. This blade was selected for development because the recent introduction of the 214 into service makes this composite blade a good candidate for production. The blade was designed to fit the standard 214 rotor without hub modification or degrading the aircraft’s auto-rotational capability. Development of the blade included numerous design support and manufacturing tests. Five blades were built; one has been fatigue tested and a pair were flight tested. Flight loads were lower than with the metal 214 blade and the limited fatigue testing conducted to date indicates greater fatigue strength.

Key concepts: Helicopter rotor, Blade (archaeology), Rotor (electric), Composite number, Aeronautics, Engineering, Materials science, Mechanical engineering

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