Contribution of DMU in the aerospace industry

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Contribution of DMU in the aerospace industry Powered By Docstoc
					              Digital Mock-up – Revolution in the Air

                                                 In 1990, Dassault Systèmes expanded the
                                                 concept of digital mock-up (DMU) created by
                                                 Dassault Aviation. It developed ground-
                                                 breaking technology that freed aerospace
                                                 manufacturers from having to build expensive,
                                                 time-consuming physical prototypes. Instead,
                                                 they could create virtual (digital) models of
                                                 new aircraft using 3D computer simulation.

3D enables aerospace manufacturers to
create the most complex parts and
assemblies found in an aircraft. Every part
is represented in 3D, right down to the
electrical systems, tubes, and wires (25
km of cables for a commercial airplane,
such as a Boeing 777).

With DMU, manufacturers combine those
virtual parts (200,000 to 3 million for an
airplane) to create a complete virtual
definition of the aircraft allowing a
simulated prototype. They can design it in
full detail, simulate its functions, and
anticipate interaction among the different
components. DMU is a cornerstone of the
Dassault Systèmes PLM offering.
                                                  Digital mock-up ensures:
                                                  Precision – adjustments no longer take place in
                                                  the physical work floor. Moving a rivet now only
                                                  requires a click of the mouse.
                                                  Continuity     –     digital mock-up      aircraft
                                                  components have a long life. They can be re-
                                                  used to build new aircraft.
                                                  Easy management of complex projects – DMU
                                                  enables hundreds of designers to work
                                                  simultaneously on an aircraft.
                                                  Effective change management – new
                                                  developments and design changes can be
                                                  quickly and straightforwardly implemented in
                                                  the digital mock-up.

                                              - more -
                                          Advances in DMU technology continue to push
                                          aerospace product development to new heights.
                                          The following is a list of the increasingly
                                          sophisticated operations that aerospace actors
                                          can perform with digital mock-up.

Predict the structural behavior of the aircraft

                                         DMU enables manufacturers to perform stress
                                         analysis and structural integrity testing of aircraft by
                                         calculating the strength of materials. DMU is used
                                         to determine the bending strength of wings. For
                                         example, the wings of the latest jumbo jetliners can
                                         flex up to six meters before they break. These
                                         simulated extreme conditions are used to
                                         understand how the plane structure will be affected
                                         in physical testing. Other phenomena that can be
                                         tested in DMU include thermal transmission, aero-
                                         acoustics, vibration, and electromagnetics.

Create complex mechanical structures and anticipate their behavior

                                          DMU enables aerospace manufacturers to design
                                          complex mechanical equipment and test its
                                          behavior. For example, CATIA is used to develop
                                          intricate landing gear structures. Design teams
                                          perform mechanical and physical (kinematic) tests
                                          to pre-define component dimensions. The parts are
                                          then created virtually in 3D and undergo finite-
                                          element analysis to determine their structural
                                          integrity. Finally, DMU is used to simulate the
                                          behavior of the overall landing gear assembly as
                                          well as integrate it with the airframe.

Foresee aircraft aerodynamics

                                           Prior to wind tunnel testing, manufacturers use
                                           DMU to simulate the flow of air around the body of
                                           the aircraft to virtually determine lift. The digital
                                           prototype is then modified to optimize the aircraft’s
                                           aerodynamics (strength versus weight). Lastly, this
                                           information is used to construct the physical
                                           prototype because all aircraft must undergo wind
                                           tunnel testing to receive certification approval (e.g.
                                           by the Federal Aviation Administration).

                                         - more -
Design and test complex aircraft systems
                                        An electrical harness is one of the most complex
                                        elements of an aircraft system to design and
                                        manufacture. A regional jet can contain up to 60
                                        different types of cables. Wire harnesses (as well
                                        as pipes) must be threaded throughout the
                                        structure. Prior to DMU, these systems were
                                        often created after the aircraft structure had been
                                        designed and built in a physical mock-up. System
                                        installers often found the system in conflict with
                                        the structural design. With digital mock-up,
                                        engineers design the aircraft systems and
                                        structure concurrently and can detect and resolve
                                        interference problems earlier.

Anticipate man-aircraft interaction (structural ergonomics)

                                        Mannequins are used to test and optimize aircraft
                                        ergonomics for cockpits and cabin interiors. To
                                        design cockpits, designers can select from a
                                        database mannequins based on the actual
                                        physical size of populations (e.g. American,
                                        French, Japanese) to determine ergonomic
                                        factors, such as field of vision, reachability, and
                                        placement of interior lighting. DMU also enables
                                        engineers to virtually experiment with cabin interior
                                        design materials, such as wallpaper, paneling,
                                        metals, carpeting and leather.

Predict maintenance efficiency (performance ergonomics)

                                        Mannequins can also be used to ensure effective
                                        mountability. Efficient aircraft maintenance is
                                        critical to a carrier’s success because a plane on
                                        the ground does not generate revenues. DMU
                                        enables designers to define, simulate, and optimize
                                        assembly and disassembly operations to ensure
                                        that maintenance teams can replace parts and
                                        service planes quickly and efficiently.

Co-develop aircraft across an extended enterprise

                                        A large aircraft manufacturer may work with
                                        dozens of partners and sub-contractors on a
                                        single project. Collaboration is imperative in order
                                        to share development data and ensure that
                                        correct decisions are made. DMU enables teams
                                        across the globe to access in real-time each
                                        other's designs. It brings a new level of decision
                                        support, innovation and collaboration, and breaks
                                        down the barriers of design segregation.

                                       - more -
Automatically produce user and maintenance documentation

                                                   Digital mock-up is a source of photo-realistic 3D
                                                   images. These images represent a vast bank of
                                                   high-quality, ready-to-use, up-to-date illustrations
                                                   that can be easily adapted for user and
                                                   maintenance guides.

Follow project advancement through mock-up reviews

                                                       Digital mock-up enables formal design review
                                                       sessions, as well as informal design conferencing.
                                                       This communication takes place across an
                                                       extended enterprise and facilitates collective
                                                       decision-making. When integrated with a product
                                                       data management solution, such as ENOVIA,
                                                       DMU enables unique clash management


About Dassault Systèmes
As world leader in PLM (Product Lifecycle Management) solutions, the Dassault Systèmes group brings
value to more than 65,000 customers in 80 countries. A pioneer in the 3D software market since 1981,
Dassault Systèmes develops and markets PLM application software and services that support industrial
processes and provide a 3D vision of the entire life cycle of products from conception to retirement. Its
offering includes integrated PLM solutions for product development (CATIA, DELMIA, ENOVIA,
SMARTEAM), general-use 3D solutions (SolidWorks), and 3D components (SPATIAL). Dassault Systèmes
is listed on the Nasdaq (DASTY) and Euronext Paris (#13065, DSY.PA) stock exchanges. For more
information, visit

                   Dassault Systèmes Press Contacts:    Dassault Systèmes Investor Contacts:
                   Anthony Maréchal                     Emma Rutherford, Harriet Keen
                   +33 1 55 49 84 21                    Financial Dynamics
                    +44 207 831 3113

                   Nelly Dimey, Lorie Lichtlen
                   Financial Dynamics
                   +33 1 47 03 68 10

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