By Egbert Torenbeek

ISBN-10: 1118568117

ISBN-13: 9781118568118

Although the general visual appeal of contemporary airliners has no longer replaced much because the creation of jetliners within the Fifties, their protection, potency and environmental friendliness have better significantly. major individuals to this were fuel turbine engine know-how, complicated fabrics, computational aerodynamics, complex structural research and on-board structures. when you consider that airplane layout grew to become a hugely multidisciplinary task, the improvement of multidisciplinary optimization (MDO) has turn into a well-liked new self-discipline. regardless of this, the applying of MDO throughout the conceptual layout part isn't but widespread.

Advanced plane layout: Conceptual layout, research and Optimization of Subsonic Civil Airplanes provides a quasi-analytical optimization procedure in keeping with a concise set of sizing equations. pursuits are aerodynamic potency, challenge gasoline, empty weight and greatest takeoff weight. self reliant layout variables studied comprise layout cruise altitude, wing quarter and span and thrust or energy loading. Principal  beneficial properties of built-in innovations reminiscent of the mixed wing and physique and hugely non-planar wings also are covered. 

The quasi-analytical method allows designers to check the result of high-fidelity MDO optimization with lower-fidelity tools which want some distance much less computational attempt. one other virtue to this technique is that it may possibly supply solutions to “what if” questions swiftly and with little computational cost.

Key features:
• provides a brand new basic imaginative and prescient on conceptual plane layout optimization
• presents an outline of complicated applied sciences for propulsion and decreasing aerodynamic drag
• bargains perception into the derivation of layout sensitivity information
• Emphasizes layout in line with first principles
• Considers professionals and cons  of leading edge configurations
• Reconsiders optimal cruise functionality at transonic Mach numbers

Advanced plane layout: Conceptual layout, research and Optimization of Subsonic Civil Airplanes advances figuring out of the preliminary optimization of civil airplanes and is a must have reference for aerospace engineering scholars, utilized researchers, plane layout engineers and analysts.

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Extra info for Advanced Aircraft Design: Conceptual Design, Technology and Optimization of Subsonic Civil Airplanes (Aerospace Series)

Example text

Specialists from different functional groups contribute to this process of refining the initial vehicle concept – AD remains responsible for coordination. This team will (re)design the delivered baseline vehicle in sufficient detail to carry out supporting analysis and specify peripheral testing programmes but not with enough detail to specify each sub-assembly. Information to establish the programme feasibility is generated by means of sophisticated computational aerodynamical, mechanical and structural analysis, prediction of the economics and expected market penetration.

This entails a complex process which ideally includes a dialogue between design, management, marketing and customer support. The pre-conceptual phase includes aircraft configuration trade studies identifying techniques and technology requirements suitable for integration into the new product. This is accomplished by initial aircraft sizing, engine matching, weight estimation and evolution of a family of aircraft with a given set of payload versus range combinations. At the end of the process, a management decision is expected for a selected configuration to be visualized in a provisional three view drawing.

This book focusses on how conclusions can be obtained and interpreted with regard to optimum conditions by means of a quasi-analytical approach. To this end, the problem is simplified to Design of the Well-Tempered Aircraft 27 such an extent that the objective function is differentiable so that (closed form) analytical solutions are obtained. The emphasis is initially on unconstrained optima which are easily obtained by means of classical theory of local optima. These optima are interesting because they identify the ultimate design quality achievable for a given generic task – moving a payload over a given distance.

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Advanced Aircraft Design: Conceptual Design, Technology and Optimization of Subsonic Civil Airplanes (Aerospace Series) by Egbert Torenbeek


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