UnderstandingAircraft Structures

John CutlerFourth Editionrevised byJeremy Liber

BlackwellPublishing

Contents

PrefaceChapter 1Chapter 2

Chapter 3

Chapter 4

Chapter 5

IntroductionHistory2.12.22.32.42.5Parti3.13.23.33.4

3.5

OutlineWire-braced structuresSemi-monocoque structuresSandwich structuresReview of the key points

of the AircraftTerms connected with flightTerms connected with controlTerms connected with high-lift devicesTerms associated with the shape anddimensions of the aircraftReview of the key points

Loads on the Aircraft4.14.24.34.44.54.64.74.8

The5.15.25.35.45.55.65.7

General flight forcesAcceleration loadsFurther aerodynamic loadsOther loadsFurther load factorsLoads acting on the whole aircraftReview of the key pointsReferences

Form of StructuresStructure relative to aircraft designHistoric form of structureGeneral form of structureThe basic load systems in structuresThe forms of stress in materialsBending and torsionComoression

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Contents

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter 10

5.85.95.10

The whole structureReview of the key pointsReferences

Materials6.16.26.36.46.56.66.76.8

Choice of materialsMaterial propertiesSmart structures (and materials)Cost as a property of a materialHeat treatmentReference number for materialsReview of the key pointsReferences

Processes11127.37.47.5

IntroductionManufacturingJointingReview of the key pointsReferences

Corrosion and Protective Treatments8.18.28.38.48.5

Nature of corrosionCauses of corrosionProtection against corrosionReview of the key pointsReference

Detail Design9.19.29.39.49.59.69.79.89.99.10

Sheet-metal componentsMachined components and large forgingsNotching and stress raisersRivets and boltsJogglingClips or cleatsStringer/frame intersectionsLugsThe 'stiff path'Review of the key points

Composite Materials in Aircraft Structures10.110.210.310.410.510.610.710.8

What are composites?The strength of composite materialsTypes of structuresJoining compositesFibresResinsWorking safely with compositesReview of the kev ooints

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133133136139144152154155156157157159159161162164167169171172

Contents vii

Chapter 11 Quality and Airworthiness 17311.1 Quality assurance and quality control 17311.2 Control 17411.3 Procedures and systems 17511.4 Further notes on quality control functions 17711.5 Airworthiness engineering 17911.6 Continued airworthiness 18011.7 Review of the key points 18111.8 References 181

Chapter 12 Stressing 18212.1 Introduction 18212.2 The stressman's work 18312.3 Stressing methods 18712.4 Stress reports 19012.5 Review of the key points 19312.6 References 194

Chapter 13 Presentation of Modifications and Repairs 19513.1 Definitions 19513.2 The essential paperwork associated

with modifications 19713.3 Review of the key points 20113.4 Conclusion 20113.5 References 202

Appendices 203Index 209