Flight Service Evaluation of Composite Helicopter Components PDF Download
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Author: George H. Mardoian
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Author: George H. Mardoian
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723081170
Category :
Languages : en
Pages : 146
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Book Description
An assessment is presented of ten composite tail rotor spars and four horizontal stabilizers exposed to the effects of in-flight commercial service for up to nine years to establish realistic environmental factors for use in future designs. This evaluation is supported by test results of helicopter components and panels which have been exposed to outdoor environmental effects since 1979. Full scale static and fatigue tests were conducted on graphite/epoxy and Kevlar/epoxy composite components removed from Sikorsky Model S-76 helicopters in commercial operations off the Gulf Coast of Louisiana. Small scale static and fatigue tests were conducted on coupons obtained from panels exposed to outdoor conditions in Stratford, CT and West Palm Beach, Florida. The panel materials and ply configurations were representative of the S-76 components. The results are discussed of moisture analyses and strength tests on both the S-76 components and composite panels after up to nine years of outdoor exposure. Full scale tests performed on the helicopter components did not disclose any significant reductions from the baseline strengths. The results increased confidence in the long term durability of advanced composite materials in helicopter structural applications. Mardoian, George H. and Ezzo, Maureen B. Unspecified Center AIRCRAFT PARTS; ATMOSPHERIC EFFECTS; COMPOSITE STRUCTURES; FATIGUE LIFE; GRAPHITE-EPOXY COMPOSITES; HELICOPTER TAIL ROTORS; THERMOSETTING RESINS; FATIGUE TESTS; FULL SCALE TESTS; HELICOPTER DESIGN; MOISTURE; SERVICE LIFE; STABILIZERS (FLUID DYNAMICS); STATIC TESTS...
Author: Langley Research Center
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 196
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 496
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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 538
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Author: Marvin B. Dow
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 150
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 584
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 898
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Author: Louis J. Williams
Publisher:
ISBN:
Category : Commuter aircraft
Languages : en
Pages : 124
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1994
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