NEL SETTORE AERONAUTICO

Presentazione sul tema: "NEL SETTORE AERONAUTICO"— Transcript della presentazione:

1 NEL SETTORE AERONAUTICO
I MATERIALI NEL SETTORE AERONAUTICO Maurizio Pizzamiglio

2 Come si progetta

3 Carichi - Aerodinamici da manovra (simmetrici- asimmetrici)
- da raffiche (verticali, laterali) - Propulsivi - spinta - coppie - CARICHI d'atterraggio  -su portaerei o simili  -su ruota o pattino -su acqua -d'arresto - Di decollo - normale - catapulta - con razzi - Speciali - cabina pressurizzata - da traino  velivolo - da sollevamento velivolo

4 Missione tipica

5 Diagramma di manovra e di raffica
66 fps C A 50 fps D 25 fps n1 S n4 1 Vs Va Vne Vd V Vsr n3 n2 25 fps -1 E H G 66 fps F 50 fps

6 Carichi

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8 Curva di Wöhler

9 MATERIAL INTRODUCTION
STRESS-STRAIN curves MATERIAL INTRODUCTION The deformation and fracture response of a material to externally applied forces are affected by many factors: metallurgy alloying crystal formation heat-treatments environment No successful theory for prediction of the properties of materials (in the future too) The significant properties of materials for structural design purposes are determined experimentally Tension and compression coupon tests provide the simplest information on mechanical properties. Experimental data are recorded on

10 Elemento Lega 7075 2024 2219 2014 2017 6061 Cu 1,6 4,5 6,0 4,45 4,0 0,28 Mg 2,5 1,5 - 0,50 1,0 Mn 0,65 0,3 0,80 0,70 Zn 5,7 Si 0,85 0,60 Cr 0,25 Ti 0,15 max. V 0,10 Zr 0,15 Materiale A % s tr Kp/mm2 s cs Ec s 0,7 n t R 2014-T6 [ estrusi t <= 12 mm ] 7 42,2 37,3 7530 18,5 24,6 2014-T6 [ forgiati t <=100 mm ] 43,6 36,6 36,8 20 27,4 2024-T3 [Piastre e lamiere t <= 6 mm ] 12 45,7 28,1 11,5 2024-T4 [ Piastre e lamiere t <= 12 mm ] 26,7 25,8 15,6 2024-T3 [ Lamiere plastate 0,5 < t < 1,6 mm ] 26,0 25,1 2024-T6 Lamiere placcate e piastre t > 1,6 mm 8 34,5 11 Lamiere placcate e piastre t < 1,6 mm 33,1 10,6 25,3 2024-T81 [ Lamiere placcate t <= 1,6 mm ] 5 38,7 39,4 11,2 6061-T6 [ Lamiere t <= 6 mm ] 10 29,6 7100 31 17,2 7 Lamiere e piastre t <= 12 mm 53,5 47,1 7390 49,3 9,2 32,4 0 Estrusi t <= 6 mm 52,8 50,7 16,6 30,2 7 Stampati t <= 50 mm 50,0 40,8 41,2 15,2 31,7 5 Forgiati a mano Area <= 10 Cm2 4 44,3 44,9 25 - Lamiere placcate e piastre t <= 12 mm 45,0 45,4 19,5 T6 7079-T6 Forgiati a mano t <= 150 mm 41,5 41,9 26 27,3

11 Wing Attach Pylon Fitting SYSTEMS Ventilation Impeller
WING &STABILIZER Spar Rib Skin Mechanisms & Fittings FUSELAGE Floor Assemblies Frames Floor Cross Beam Seat Tracks Bulkhead Baggage Door Access Doors Keel Beam Canopy Beams Seat Assemblies Windows Frames COCKPIT Window Frames Dashboard Center Pedestral & Sides Engine Mount Assy Engine Attach Pylon Fitting Wing Attach Pylon Fitting Titanium Ribs Panels Engine Pylon Assemblies SYSTEMS Ventilation Impeller Fuel Pipe Connectors LANDING GEAR Torque Links Towing Fitting Doors Goose Necks Fitting assemblies Nacelle & Thrust reverser & Engine Ring Beams & Frames Equipments Suspension Case Blades Flow Splitter DOORS Structure Mechanisms Hinges Fittings

12 Frame 16 – A380 Nose Landing Gear Box
8ft (2500mm) 13ft (4000mm) Frame 42 – A320 Frame 1 – A380 16ft (4900mm) 5ft (1500mm) Frame 16 – A380 Nose Landing Gear Box Back to menu

13 Floor Assy Section 12 A350 XWB (Design and built contract)
20ft (6000mm) 8ft (2500mm) Floor Assy T15 – A330 PAX Floor Assy T15 – A330 GMF 16.22ft (5070mm) 12.16ft (3800mm) Floor Assy Section 12 A350 XWB (Design and built contract) Back to menu

14 Outboard Aft Spar - G650 Wing Spar - G650 Outboard Front Spar G650
42ft long Outboard Rear Spar G650 36ft long Outboard Aft Spar - G650 Wing Spar - G650 Back to menu

15 12ft (3650mm) 30ft (9000mm) Elevator Panel Falcon 900/2000 Wing Skin
Attachment Fitting ATR 42/72 Machining + Forming Elevator Panel Falcon 900/2000 Wing Skin Legacy 450 Wing skin Machining + Forming 30ft (9000mm) Vertical Stabilizer Skin FALCON 900/2000 Wing skin – FALCON 900/2000

16 Flap Track Titanium - RAIL ERJ190
43’’x16’’ (1100mm x 400mm) Flap Track Titanium - RAIL LEGACY 450 EMBRAER

17 Titanium Panel – A350 Back to menu

18 Compositi

19 Compositi

20 Compositi

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22 Compositi

23 Comportamento a fatica

24 Problematica

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