Modeling and testing of fluidic flexible matrix composite lead–lag dampers

Matthew J. Krott; Edward C. Smith; Christopher D. Rahn

doi:10.4050/JAHS.65.012012

Modeling and testing of fluidic flexible matrix composite lead–lag dampers

Matthew J. Krott, Edward C. Smith, Christopher D. Rahn

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A new lead–lag damper concept using a fluidic flexible matrix composite (F²MC) tube is presented in this paper. A model is developed for an articulated rotor blade integrated with an F²MC damper consisting of an F²MC tube, an inertia track, an orifice, and a hydraulic accumulator. Benchtop tests using a 4.5-ft rotor blade demonstrate the performance of a small-scale F²MC damper. The blade–damper system model predictions are verified by comparing experimentally measured and model-predicted frequency response data. In benchtop tests, the model predicts blade damping ratios of up to 0.34 with the F²MC damper. A simplified articulated blade based on the UH-60 rotor is simulated to assess the feasibility of a full-scale F²MC damper. Simulation results predict that the damper can generate blade damping ratios of over 0.30 at low blade lag angles.

Original language	English (US)
Article number	012012-1
Journal	Journal of the American Helicopter Society
Volume	65
Issue number	1
DOIs	https://doi.org/10.4050/JAHS.65.012012
State	Published - Jan 2020

All Science Journal Classification (ASJC) codes

General Materials Science
Aerospace Engineering
Mechanics of Materials
Mechanical Engineering

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10.4050/JAHS.65.012012

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title = "Modeling and testing of fluidic flexible matrix composite lead–lag dampers",

abstract = "A new lead–lag damper concept using a fluidic flexible matrix composite (F2MC) tube is presented in this paper. A model is developed for an articulated rotor blade integrated with an F2MC damper consisting of an F2MC tube, an inertia track, an orifice, and a hydraulic accumulator. Benchtop tests using a 4.5-ft rotor blade demonstrate the performance of a small-scale F2MC damper. The blade–damper system model predictions are verified by comparing experimentally measured and model-predicted frequency response data. In benchtop tests, the model predicts blade damping ratios of up to 0.34 with the F2MC damper. A simplified articulated blade based on the UH-60 rotor is simulated to assess the feasibility of a full-scale F2MC damper. Simulation results predict that the damper can generate blade damping ratios of over 0.30 at low blade lag angles.",

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AU - Rahn, Christopher D.

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Modeling and testing of fluidic flexible matrix composite lead–lag dampers

Abstract

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