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- W69675156 abstract "Higher harmonic blade feathering for helicopter vibration reduction is considered. Recent wind tunnel tests confirmed the effectiveness of higher harmonic control in reducing articulated rotor vibratory hub loads. Several predictive analyses developed in support of the NASA program were shown to be capable of calculating single harmonic control inputs required to minimize a single 4P hub response. In addition, a multiple-input, multiple-output harmonic control predictive analysis was developed. All techniques developed thus far obtain a solution by extracting empirical transfer functions from sampled data. Algorithm data sampling and processing requirements are minimal to encourage adaptive control system application of such techniques in a flight environment." @default.
- W69675156 created "2016-06-24" @default.
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- W69675156 date "1978-04-01" @default.
- W69675156 modified "2023-09-25" @default.
- W69675156 title "Application of higher harmonic blade feathering for helicopter vibration reduction" @default.
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