CODE-TILT

Contribution to design optimization of tiltrotor components for drag reduction

 Coordinatore UNIVERSITA DEGLI STUDI DI PADOVA 

 Organization address address: VIA 8 FEBBRAIO 2
city: PADOVA
postcode: 35122

contact info
Titolo: Prof.
Nome: Guido
Cognome: Ardizzon
Email: send email
Telefono: +39 049 8276763
Fax: +39 049 8276785

 Nazionalità Coordinatore Italy [IT]
 Totale costo 894˙000 €
 EC contributo 670˙500 €
 Programma FP7-JTI
Specific Programme "Cooperation": Joint Technology Initiatives
 Code Call SP1-JTI-CS-2010-01
 Funding Scheme JTI-CS
 Anno di inizio 2010
 Periodo (anno-mese-giorno) 2010-10-01   -   2013-09-30

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITA DEGLI STUDI DI PADOVA

 Organization address address: VIA 8 FEBBRAIO 2
city: PADOVA
postcode: 35122

contact info
Titolo: Prof.
Nome: Guido
Cognome: Ardizzon
Email: send email
Telefono: +39 049 8276763
Fax: +39 049 8276785

IT (PADOVA) coordinator 90˙000.00
2    HIT09 Srl

 Organization address address: Galleria Storione 8
city: Padova
postcode: 35100

contact info
Titolo: Dr.
Nome: Roberto
Cognome: Da Forno
Email: send email
Telefono: +39 347 4222706
Fax: +39 0422 860926

IT (Padova) participant 580˙500.00

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

tool    empennage    gear    landing    an    moments    points    multiple    fuel    wing    tail    shape    objective    reasonable    benefits    tiltrotor    fuselage    aircraft    geometrical    constraints    industrial    efficient    drag    applicants    optimizer    optimization    optimisation    configuration    automatic    efficiency    sponsons    components    nose    geometries    methodology    junction    surfaces    pursued    software    procedure    grc    aerodynamic    flow    tools    computing    industry    cfd   

 Obiettivo del progetto (Objective)

'Objectives. This proposal describes a methodology to be used for efficient optimization aimed at drag reduction of some components of a tiltrotor fuselage, i.e. nose, wing/fuselage junction, sponsons and tail surfaces. Specific objectives of such activity are to: i. set up a comprehensive and automatic design tool, integrating the software in use at the GRC Consortium and an in-house optimizer already developed by the applicants; ii. implement efficient and robust optimization strategies for obtainment of optimal geometries using reasonable computing time; iii. implement, test and run such tool within the industrial design procedure currently available at the GRC Consortium; iv. apply such tool for drag reduction of the above mentioned components in order to improve the overall aircraft aerodynamic efficiency, while guaranteeing compliance with industrial constraints and needs. Methodology. Objectives i) and iii) will be achieved by means of a dedicated programming activity where the software tools will be integrated together and with the proprietary optimization tool by the applicants. This will result in a procedure where geometrical and grid manipulation, as well as CFD analyses will form an automatic loop. Objective ii) will be guaranteed by the capability of the optimizer to handle complex multiobjective problems; the optimization chain will be conceived in such a way that the user can interact with the optimizer and monitor the whole process as it takes place. Objective iv) will be pursued mainly by means of shape modifications for drag reduction, but, due to the product oriented character of this activity, also complementary techniques (i.e. riblets, vortex generators, Hybrid Laminar Flow Control, gaster bump, sweeping jets, winglets, wing strakes, upper surface spoilers) may be considered and discussed with the leading industry, if a pure numerical shape optimization would lead to unfeasible solutions with respect industrial constraints.'

Introduzione (Teaser)

EU researchers are helping to develop a methodology in order to design a more environmentally friendly tiltrotor. Improving the aerodynamic design of tiltrotor fuselage and of other components should provide the European aircraft industry with a host of benefits in terms of efficiency and fuel consumption gains.

Descrizione progetto (Article)

The green rotorcraft (GRC) is part of the Clean Sky initiative, focusing, amongst other research areas, on optimising the design and active flow control of airframe and other aircraft components. To this end, innovative software tools are required that should operate at reasonable computing times, and that will be fully compliant with manufacturing constraints.

In this context, the 'Contribution to design optimization of tiltrotor components for drag reduction' (CODE-TILT) project is developing advanced design methodologies aiming to optimise overall tiltrotor efficiency by decreasing the drag force. The objective of this EU-funded project is twofold, namely to identify the optimum geometries that maximise the aerodynamic efficiency, and to evaluate the aerodynamic efficiency of the aircraft in its totality.

Effective aerodynamic design of fuselage components requires the accomplishment of multiple, and often conflicting, objectives in presence of multiple and multi-criteria constraints. The CFD model of the basic tiltrotor fuselage geometry was assessed for various flight conditions and validated against experimental data. In parallel, the set-up of a comprehensive optimization strategy aimed at improving the efficiency of the tiltrotor fuselage components. This was achieved by means of a proper shape design. Finally, a study was made into the applicability of drag reduction concepts alternative to those related to shape optimization to the wing/fuselage junction and empennages.

An optimisation tool was applied to the wing-fuselage junction. The geometrical shape optimization of the wing/fuselage junction, which aimed at increasing the component efficiency, was addressed for a series of operating points. The impact of the rotor inflow on the overall efficiency was taken into account as well.

The optimised configuration of both the fuselage nose and landing gear sponsons was determined. The optimisation of nose and landing gear fairings was focused on the drag reduction of both the considered components. This took into account some constraints on the pilot visibility and aerodynamic moments of the overall tail-off configuration.

The optimised configuration for the empennage surfaces, including both the fin and the horizontal tailplane, was searched for. The main objective to be pursued was the efficiency improvement of the empennage in terms of increased Lift/Drag ratio at the selected design points. This was done while accounting for some constraints on the aerodynamic moments of the overall configuration, in order to guarantee the static stability requirements.

An overall decrease of tiltrotor fuselage drag of 9 % is expected. Evaluating the benefits in terms of fuel saving is outside the scope of the project; however, they will be stated within GRC2.

Key words:

Altri progetti dello stesso programma (FP7-JTI)

HICTAC (2013)

High performance composites for demanding high Temperature applications

Read More  

CODE-TILT (2010)

Contribution to design optimization of tiltrotor components for drag reduction

Read More  

SAFEPEM (2011)

Safe Fieldbus dEvelopment for Power Electronic Module

Read More