LE TECNOLOGIE INNOVATIVE PER I VELIVOLI DI NUOVA GENERAZIONE

Transcription

1 LE TECNOLOGIE INNOVATIVE PER I VELIVOLI DI NUOVA GENERAZIONE Morphing Structures: 7 years of research at UniNA R. Pecora 3 Incontro - Napoli, 25 Ottobre 2014 Scuola Politecnica e delle Scienze di Base Piazzale V. Tecchio 80, Napoli

2 7 years of partnership 2

3 Overview of research contracts JTI-GRA: High TRL morphing structures enabling wing flap camber variation. SARISTU: High TRL morphing structures enabling wing trailing edge camber morphing (CS-25 category A/C) ALA-Smart TE: development of new technologies enabling (ATR42) wing trailing edge cambermorphing through SMA-based actuators. CRIAQ MDO505: development of an adaptive wing box (CS25 A/C) equipped with active skin bumps and morph-ing aileron for drag reduction. 3

4 ALA-Smart Flap ( ) Research objective: development of new technologies enabling (ATR42) wing trailing edge cambermorphing through SMA-based actuators. C w = 2.574m C f = 0.772m d = 1.802m Investigation domain Flapped airfoil FA morphing law H H Morphed airfoil (FA ) Common features of the investigated architectures: Rib structure as compromise between rigidity and flexibility SMA beams: acting as actuators and primary structural elements Different actuation modalities due to multiple SMA elements suitably distributed 4

5 ALA-Smart Flap ( ) Morphing rib architecture: thinking out of the boxes Monolithic plate Multi-body with conventional hinges Multi-body with elastic hinges Multi-body with mechanic chains 5

6 ALA-Smart Flap ( ) The inspiration: the arch shaped actuator 1 Concept design 2 Analysis 4 Tests 3 Manufacturing 6

7 ALA-Smart Flap ( ) Actuator integration within the structure: rib concept characterized by a high level of integration Unmorphed config. Morphed config. Not structural element (for shape only) SMA ribbon Elastic element 7

8 ALA-Smart Flap ( ) Actuator integration within the structure: rib concept characterized by a low level of integration 8

9 ALA-Smart Flap ( ) Main achievements of the project: actuation device and wing flap assembly successfully patented 9

10 Clean Sky GRA (phase 1, ) Research objective: Design, manufacturing and validation of a morphing architecture enabling the controlled camber variation of a single flap element in compliance with target reference shapes. The definition of the target (morphed) shape was carried out by CIRA through 2D CFD optimization analyses at M = 0.2 and based on in-house RANS flow solvers. 3,5 3,4 baseline best 3,3 3,2 cl 3,1 3 2,9 2,8 2, alfa 10

11 Clean Sky GRA (phase 1, ) Research objective: Design, manufacturing and validation of a morphing architecture enabling the controlled camber variation of a single flap element in compliance with target reference shapes. Concept identification Preliminary design Advanced design rib lay-out assessment spars lay-out assessment cross-links lay-out assessment actuator/control system assess. Advanced cinematic analysis Refined FE model and analyses 11

12 Clean Sky GRA (phase 1, ) Research objective: Design, manufacturing and validation of a morphing architecture enabling the controlled camber variation of a single flap element in compliance with target reference shapes. Prototype manufacturing Experimental tests Func. tests Static tests GVT 12

13 Clean Sky GRA (phase 1, ) Research objective: Design, manufacturing and validation of a morphing architecture enabling the controlled camber variation of a single flap element in compliance with target reference shapes. 13

14 SARISTU ( ) 14

15 SARISTU ( ) Application scenario 2, adaptive TE: key partners m 0.7 m investigation domains Definition of Requirements & Specifications Aerodynamic design Design of the morph. structure Design of systems TE box Actuation & control Skin Sensing Stressed layout emission / Aeroelastic assessment Executive drawings and manufacturing of prototypes Experimental tests 15

16 SARISTU ( ) Application scenario 2, adaptive TE: the inner structure Baseline configuration 16

17 SARISTU ( ) Application scenario 2, adaptive TE: the dummy demonstrators ATE structure : executive layout ATE structure : simplified demonstrator (dummy) ATE structure : simplified layout 17

18 SARISTU ( ) Application scenario 2, adaptive TE: AS02 demonstrator and qualification tests 18

19 SARISTU ( ) Application scenario 2, adaptive TE: AS02 demonstrator and qualification tests 19

20 SARISTU ( ) Application scenario 2, adaptive TE: AS02 demonstrator and qualification tests 20

21 SARISTU ( ) From AS02 to IS12: 5-bay demonstrator 21

22 SARISTU ( ) From AS02 to IS12: for the firs time ever, a true scale wing segment equipped with 3 fully functional morphing devices will be tested in one of the largest WT of the world! (TSAGI WT facility, Russia) 22

23 CRIAQ-MDO505 ( ) Research objective: Design, manufacturing and test of a morphing aileron as part of an integrated wing tip system devoted to increase aerodynamic efficiency in cruise. 23

24 CRIAQ-MDO505 ( ) Coupled morphing device: morphable skin box + aileron with morphing camber capabilities Canadian team responsibility Italian team responsibility 24

25 CRIAQ-MDO505 ( ) Morphing aileron: morphing box and actuation 25

26 CRIAQ-MDO505 ( ) Morphing aileron: the sliding skin concept (high TRL) 26

27 Clean Sky GRA (phase 2, ) Phase 1 architecture was selected for follow-on activities addressing the design and the mechanical demonstration of an advanced 3D prototype implementing similar but enhanced morphing solutions. The new device, is applicable to the NLF wing of the 130-seats GRA with rear fuselage power plant. PHASE 1 OUTCOMES TRL 4/5 (2015) TRL 3 (2012) 27

28 Clean Sky GRA (phase 2, ) Overview of the work plan Reworking of SACM morphing concept Cinematic analysis of the 3DF morphing rib Structural analysis of the 3DF morphing rib PRELIMINARY DESIGN Assessment of the single bay architecture Cinematic and structural analysis of the single bay Preliminary drawings of the 3DF prototype May 2014 Preliminary Design ADVANCED DES. & MANUFACTURING Critical design review Executive Design TEST Apr Prototype manufacturing Sep Ground demonstration 28

29 Clean Sky GRA (phase 2, ) Bi-modal morphing rib: mode 1 actuation 29

30 Clean Sky GRA (phase 2, ) Bi-modal morphing rib: mode 2 actuation 30

31 Clean Sky GRA (phase 2, ) Bi-modal morphing rib: morphing mode 1 31

32 Clean Sky GRA (phase 2, ) Bi-modal morphing rib: morphing mode 2 32

33 Clean Sky GRA (phase 2, ) Key-issues: fitting mechanisms in a tapered structure, design of a (large) sliding skin (only) 1st and last chordwise segments tapered. Straight hinge lines perpendicular to rib s planes Armadillo-like skin with syliconic seals 33

34 Clean Sky GRA (phase 2, ) 3DF architecture: morphing mode 1 34

35 Clean Sky GRA (phase 2, ) 3DF architecture: morphing mode 2 35

36 Clean Sky GRA (phase 2, ) 3DF architecture: the armadillo-like skin during morphing 36

37 Clean Sky GRA (phase 2, ) ADVANCED DES. & MANUFACTURING May 2014 End of Preliminary Design Critical design review Executive Design Layout refinement Detailed FE models and analyses Elaboration of the stressed layout Definition of manufacturing tolerances 2D drawings and part list Structure path Equipment path Control System design Actuators purchase (Manufact.) Time & Methods TEST Apr Prototype manufacturing Spare parts manufacturing C.o.t.s. purchase Control System Implementation Sep Ground demonstration Final assembly 37

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