Helicopter design includes several disciplines with often-conflicting requirements. A formal system design framework is developed in this research where the designer coordinates with disciplinary experts to find an overall optimized design while simultaneously optimizing disciplinary objectives. The overall system objective function chosen in the preliminary design is minimum production cost for a light turbine-training helicopter. Several disciplinary objectives including specific fuel consumption for propulsion, empty weight for weights group, and figure of merit for aerodynamics group are optimized. In addition to disciplinary optimization, several analyses are performed including vehicle engineering, dynamic analysis, stability and control, transmission design, and noise analysis. The design loop starts from the conceptual stage where the initial sizing of the helicopter is done based on mission requirements. The initial sizing information is then passed to disciplinary experts for preliminary design. The design loop is iterated several times using multidisciplinary design techniques like All At Once (AAO) and Collaborative Optimization (CO) approaches. A light training helicopter is proposed that satisfies all the mission requirements, is optimized for several disciplines and has minimum production cost. Merits, demerits, requirements and limitation of the proposed methodology are discussed.


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    Title :

    Helicopter design cost minimization using multidisciplinary design optimization


    Additional title:

    Kostenminimierung bei der Hubschrauberkonstruktion mittels multidisziplinärer Konstruktionsoptimierung


    Contributors:


    Publication date :

    2007


    Size :

    21 Seiten, 44 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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