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Evolution of Embraer Aircraft Design

Evolution of Embraer Aircraft Design. EMB 120 Brasilia. 30 seat turboprop with pressurized fuselage Maiden flight in 1983 Part 25 damage tolerant aircraft

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Evolution of Embraer Aircraft Design

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  1. Evolution of Embraer Aircraft Design EMB 120 Brasilia • 30 seat turboprop with pressurized fuselage • Maiden flight in 1983 • Part 25 damage tolerant aircraft • Large advances in development of tools for DT analysis (development of in-house software, analysis of stiffened panels with two-bay cracks etc.) • Increase in the number of tests for materials and components

  2. Evolution of Embraer Aircraft Design EMB 120 Brasilia • FSTF for two lifetimes or 120,000 flights (fatigue) • Additional 15,000 FC (residual strength, crack propagation & tear down)

  3. Evolution of Embraer Aircraft Design ERJ 145 Family of Regional Jets • 50 seat twin-jet with fuselage cross-section similar to EMB 120 • Maiden flight of ERJ 145: 1995 • Over 1,000 aircraft delivered (ERJ 135/140/145/145XR, Legacy) • 11,000,000 Flights completed in 2007 with Zero Accident • Part 25 damage tolerant aircraft • Further advances in fatigue and DT tests for sub-components (joints, mounts, etc.)

  4. Evolution of Embraer Aircraft Design ERJ 145 Family of Regional Jets • FSTF for two lifetimes or 120,000 flights (fatigue) • 1 additional lifetime (residual strength and crack propagation) • Test finished in 2003

  5. Embraer 170/190 – Fatigue & DT Tests EMBRAER 190 – HS Fatigue Test • Performed for two life times - or 160,000 flights - started in 2003 • 1 additional lifetime (residual strength and crack propagation) • Test finished in 2006. Outline of Test Specimen

  6. Embraer 170/190 – Fatigue & DT Tests EMBRAER 190 – HS Fatigue Test • Embraer-190 HS fatigue test third life: 160,000 to 240,000 flight cycles • Location: HS “Middle spar near center line splice” • Damage inserted in order to correlate theoretical prediction aproaches • Induced artificial damage: middle spar failed and associated secondary crack in the upper skin

  7. Embraer 170/190 – Fatigue & DT Tests EMBRAER 190 – HS Fatigue Test • Embraer-190 HS fatigue test third life: 160,000 to 240,000 flight cycles • Verification of damage growth for critical region: from 55 mm (previous) up to 80 mm

  8. Embraer 170/190 – Fatigue & DT Tests EMBRAER 170/190 Family of Jets - FSFT • Embraer 170 FSTF for 2 lifetimes - or 160,000 flights - started in 2002

  9. Embraer 170/190 – Fatigue & DT Tests EMBRAER 170/190 Family of Jets - FSFT • Embraer 190 FSTF for 2 life times - or 160,000 flights - started in 2003 • Forward and rear fuselage not included (common with Embraer 170)

  10. Embraer 170 Fuselage Barrel Fatigue Test Outline of Test Specimen

  11. Str - 0 2 L Str - 01L Str - 01 R X X Str - 0 2 R Str - 0 3R Str - 0 4R Frm - 0 3 Frm - 0 4 Frm - 0 5 Frm - 0 6 Frm - 0 7 Embraer 170 Fuselage Barrel Fatigue Test LONGITUDINAL SKIN CRACK WITH BROKEN FRAME IN TOP SKIN REGION DAMAGE B-D01-2 Section X-X Sheet Frame 05 and Shear Clip Failed Skin Crack B-D01-2 12.7 12.7

  12. Embraer 170 Fuselage Barrel Fatigue Test DAMAGE B-D01-2 – FEM Modelling Scheme (a): Global FEM (Super element); (b): Residual Structure.

  13. Embraer 170 Fuselage Barrel Fatigue Test

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