Sökning: "Aircraft"

Visar resultat 21 - 25 av 374 avhandlingar innehållade ordet Aircraft.

  1. 21. On Aircraft Conceptual Design : A Framework for Knowledge Based Engineering and Design Optimization

    Författare :Kristian Amadori; Petter Krus; Christopher Jouannet; Johan Ölvander; Ulf Sellgren; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer and systems science; Data- och systemvetenskap;

    Sammanfattning : This thesis presents a design framework where analytical tools are linked together and operated from an efficient system level interface. The application field is aircraft conceptual design. Particular attention has been paid to CAD system integration and design optimization.Aircraft design is an inherently multidisciplinary process. LÄS MER

  3. 22. Model based aircraft design : high angle of attack aerodynamics and weight estimation methods

    Författare :Christopher Jouannet; John Fielding; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis addresses modelling of high angle of attack aerodynamic characteristics and weight estimation for highly maneuverable aircraft during conceptual design. In order to allow configuration selection with sufficient confidence, especially with unconventional configurations, high angle of attack aerodynamic prediction and weight estimations methods need to be improved. LÄS MER

  4. 23. Affect as a Component of Perceived Sound and Vibration Quality in Aircraft

    Författare :Daniel Västfjäll; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; comfort; sound quality; evaluations; affective reactions; preference; interior aircraft sounds; propeller aircraft;

    Sammanfattning : The concept of product sound quality is becoming an integral component of product development and design. The research presented in this thesis test the notion that affective reactions (i.e. positive-negative feelings) are a major determinant of perceived sound quality. LÄS MER

  5. 24. Final Approach : Measurements and Ratings of Aircraft Landing Noise

    Författare :Anders Johansson; Karl Bolin; Susann Boij; Antonio Filippone; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aircraft noise; acoustic measurements; psycho acoustics measurements; noise annoyance; Flygplansbuller; akustiska mätningar; psykoakustiska mätningar; bullerstörning; Teknisk mekanik; Engineering Mechanics;

    Sammanfattning : Följande avregleringen av flygmarknaden har flygtrafiken ökat snabbt sedan mitten av 1990-talet. Detta har oundvikligen lett till en utbyggnad av flygplatser, vilket på många platser runt om i världen har lett till oro och konflikter på grund av ökade bullernivåer. LÄS MER

  7. 25. Modelling of unsteady aerodynamics for aircraft design

    Författare :Christopher Jouannet; Linköpings universitet; []
    Nyckelord :Aircraft Deisgn; Aerodynamic; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis present a simple mathematical prediction model for high angles of attack aerodynamics, including dynamic effects over delta wings, and an extension to full configuration. The model presented is intended for application in conceptual design and is extended to parameters identifications in preliminary design with validation against experimental data. LÄS MER