The present paper reports the outcomes of activities concerning a real-time SHM system for debonding flaw detection based on ground testing an aircraft structural component as basis condition-based maintenance. In this application, damage method unrelated to or load models is investigated. reported applied two flaws, kissing bond type, artificially deployed over full-scale composite spar under action external bending loads. proposed algorithm, local high-edge onset (LHEO), detects edge in...

Shape memory alloys materials, SMA, offer several advantages that designers can rely on such as the possibility of transmitting large forces and deformations, compactness, intrinsic capability to absorb loads. Their use monolithic actuators, moreover, lead potential simplifications system, through a reduction number parts removal many free play gaps among mechanics. For these reasons, technological aerospace research is focusing this kind technology more more, even though fatigue life,...

Structural health monitoring has multifold aims. Concerning composite structures, the main objectives are perhaps reducing costs by shifting from scheduled to on-demand maintenance and weight removing redundant precautions as insertion of chicken fasteners for ensuring joint safety in cases bonding layer fail. Adhesion defects may be classified along different types, instance distinguishing between glue deficiency or de-bonding. This paper deals with a preliminary numerical characterization...

In recent years, there has been a significant increase in the use of structural health monitoring (SHM) technologies as systems for integrity aircraft’s structures. The compact and embeddable sensor networks, like ones based on fibre optics (FO), is particularly attractive from perspective releasing an integrated system with intrinsic sensing capacity. Usually, SHM architecture completed by dedicated algorithm that processes data gathered sensors to elaborate level damage currently suffered...

This paper deals with the system design of USV1, first Space experimental vehicle funded by Italian National Aerospace Research Program (PRORA). The Unmanned Vehicle 1 (USV1) is a multi-mission, re-usable under development in CIRA, Centre. USV1 mission scheduled for end 2005 and aimed at experimenting transonic flight re-entry vehicle. In addition, being multi-mission flying laboratory, will perform three flights, each one them simulating final portion typical trajectory. basically composed...

Morphing aeronautical systems may be used for a number of aims, ranging from improving performance in specific flight conditions, to keeping the optimal efficiency over certain parameters domain instead confining it single point, extending envelope, and so on. An almost trivial statement is that traditional skeleton architectures cannot held as structure modified being rigid deformable. That passage not simple, able shall designed constructed face those new requirements. What marginal,...

In the work at hand, a shape memory alloy (SMA)-based system is presented. The system, conceived for releasing environmental sensors from ground or small unmanned aerial vehicles, UAV (often named UAS, system), made of door, integrated into bottom fuselage, device distributor, operated by couple antagonistic SMA springs, and kinematic chain, to synchronize deployment operation with movement. On basis specifications (weight, available space, energy supply, size, etc.), design was addressed....

In the aeronautical field, damage that occurs to a carbon-fibre-reinforced polymer (CFRP) structure analysis is crucial point for further improving its capability and performance. current state of art, in fact, many issues are linked certification process more than technological aspects. For sake clarity, it should be added regulations call solutions invasive (in terms weight manufacturing costs) or exploit technologies not fully mature. Thus, truth between above statements. One possible...

<div class="section abstract"><div class="htmlview paragraph">The formation of ice can be very detrimental to flight safety, since the accumulated on surfaces aircraft alter both aerodynamics and weight, leading in some cases catastrophic lift reductions. Traditional active Ice Protection Systems (IPS) require high energy work, add weight complexity manufacturing. On other hand, use passive IPS, such as superhydrophobic/icephobic coatings, cannot successful harsh environmental...

The present work focuses on the actuation system of a morphing winglet conceived to adaptively alter load distribution wing, reduce its stress level and enhance climb performance. is equipped with two flaps, independently controlled by dedicated kinematic chains, in turn moved linear electro-magnetic actuators. An interior finger-like architecture, relevant part system, makes particularly smooth deflections. Starting from survey similar applications basis requirements at aircraft level,...

In the framework of CLEAN SK2 AIRGREEN2 Project (CS2, AG2), an Adaptive morphing Winglet (AWL) was developed for LEONARDO (LDO) TP90 Regional Aircraft with aim to improve A/C aerodynamic performance in off-design conditions and reduce loads at critical flight points.Within project, Italian Aerospace Research Centre (CIRA) is leader also technical owner winglet concept a trailing edge devices design structural analysis as well responsible Static Functionality Ground Tests engineering. TECNAM...

The use of adhesive bonding in the aeronautical structures has become a big challenge for industries because it would allow obtaining savings terms cost manufacture and weight themselves. On other hand, relating to certification processes, authorities bonded main as long there is possibility monitoring them with reliable tools that permit verifying strength each joint. In framework OPTICOMS project, funded within European Program Clean Sky 2, an activity was carried out on representative...

View Video Presentation: https://doi.org/10.2514/6.2022-0717.vid This paper offers an overview of the Project AIRGREEN2 (AG2, Clean Sky 2), in terms main targets, technology development and maturation path, current achievements further steps perspective. Starting from industrial scientific scenario which AG2 was conceived, outlining specific way it meets market environmental requirements, general structure is illustrated, paying attention to validation gates demonstration test campaigns. The...

In order to prevent ice formation, different strategies may be adopted: passive coatings, active power consuming systems, or their combination. Several categories of coatings with ice-phobic behavior have been developed in the last decade, having as a common strategy creation rough and hydrophobic surfaces. The goal coating application is repel water droplets, delay nucleation significantly reduce adhesion. However, alone are not sufficient guarantee icing protection wide range humidity...

In this paper, the design, manufacturing and testing of a morphing winglet concept, developed in framework Clean Sky 2 REG IADP AIRGREEN Project is presented. Such an adaptive device being by CIRA manufactured TECNAM to enhance wing aerodynamic efficiency off-design conditions reduce maneuver loads. The concept based on two individual (asynchronous) surfaces consisting “finger-like” mechanisms driving same number moveable (the upper lower tabs), controlled dedicated electromechanical actuators.

The present work focuses on the design and realization of a leading edge wind tunnel model, integrated with two ice protection systems: an icephobic coating ultrasound piezoelectric system. scope is to investigate these technologies acting separately in synergy. definition demonstrator, approach manufacture integration process are line development path at basis National Project "SMOS - Smart On board Systems", targeting innovative anti de-icing low power architectures. organized different...

The VLT Survey Telescope (VST) is a cooperative program between the European Southern Observatory (ESO) and INAF Capodimonte Astronomical (OAC), Naples, for study, design, realization of 2.6-m wide-field optical imaging telescope to be operated at Paranal Observatory, Chile. VST has been specifically designed carry out stand-alone observations in UV I spectral range supply target databases ESO Very Large (VLT). manufacturing integration are responsibility TWG have carried on base model...

In this paper, the design, manufacturing and testing of a morphing winglet concept, developed in framework Clean Sky 2 REG IADP AIRGREEN Project is presented. Such an adaptive device being by CIRA manufactured TECNAM to enhance wing aerodynamic efficiency off-design conditions reduce maneuver loads. The concept based on two individual (asynchronous) surfaces consisting "finger-like" mechanisms driving same number moveable (the upper lower tabs), controlled dedicated electromechanical actuators.

In this paper an overview is given on some relevant activities performed by CIRA within the field of noise and vibration, guidance, monitoring control. Conventional microphones, piezoelectric materials fiber optics are sensing strategies used for proposed applications. High level integrability, wide operational frequency range just features that make them particularly suited structural sensing, micro actuation harvesting. The first study regards active headrest system developed aircraft...

The final objective of the study herein reported is preliminary evaluation capability an original, real-time SHM system applied to a full-scale wing-box section as significant aircraft component, during experimental campaign carried out at Piaggio Lab in Villanova D’Albenga, Italy. In previous works, authors have shown that such could be composite beams, reveal damage along bonding line between longitudinal stiffening element and cap. Utilizing suitable scaling process, work has then been...