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Aircraft Conceptual Design: Constraint Analysis and Cost Estimation

Gain an understanding of constraint analysis and cost estimation in aircraft design, in this free online course.

Publisher: NPTEL
This free online course on constraint analysis and cost estimation discusses the essential skills required to perform the key tasks in aircraft conceptual design. You will learn about the systems for estimating the performance parameters, which are the bedrocks of feature configurations. You will also discover the models used for costs estimation and how to make mathematical guesstimates using the performance equations in aircraft design.
Aircraft Conceptual Design: Constraint Analysis and Cost Estimation
  • Duration

    6-10 Hours
  • Students

  • Accreditation






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In this free online course, you will learn the essential skills for estimating and meeting the typical constraints in specifications. Essentially, constraints in specifications may be due to customer requirements such as the design and cruise Mach number. Meanwhile, constraints could also be that of balanced field length, service ceiling, etc., which constitutes the regulatory requirements in aircraft design. You will be introduced to Raymer’s big six parameters and their relationship with the aircraft functionality and the structural components of its wings. Raymer’s big six parameters will include performance factors that relate to the wing, like the thickness-to-chord (t/c) ratio, aspect ratio (AR) and sweep. These parameters will also take into consideration the performance 'characteristics' like wing-loading that share a direct relationship with the aircraft. The techniques for constraint analysis, the stepwise procedures for estimating the constraint in take-off climb gradient in Transport and Military Aircraft, and novel models for Refined Sizing will also be highlighted.

Next, you will uncover the three types of costs that designers encounter at the conceptual design phase of the aircraft production initiative. The costs will be classified into costs incurred over the lifespan of the aircraft, costs due to components and engineering design, costs of operation and support, and the costs acquired during idea conceptualization and development. You will also examine how the costs acquired for the life span of an aircraft is the new paradigm shift in aircraft engineering design, and the innumerable advantages of documenting the costs expended on an aircraft fabrication or acquisition. You will consider the cost estimation ratios for factors, features or parameters that affect costs. The problems in cost estimation, which usually arise from errors in statistical data obtained from the accounting procedures employed for value estimations will be analyzed. Also, the detailed evaluation of actual tasks, cost estimation relationships (CER), life cycle costs, and additional cost elements are applicable skills in conceptual design, which will be presented to you with detailed video illustrations in the lesson.

Furthermore, you will be shown how to evaluate operational suitability, technology research, design documentation, as well as airworthiness and mission compliance certifications through the Research Development Testing and Engineering (RDT&E) process of the product development cycle. Also, the model for direct operating cost (DOC) estimation and a real-world scenario of the life cycle cost prediction model developed for military applications will be proposed. If you are a student and are interested in the field of aeronautics, aeronautical engineering or aerospace engineering and you’re considering a career path in any of these fields, then this straight-to-the-point, no fluff course is the one for you. The reliability of the component of aircraft hardware lies greatly in the structural configuration of its layout. Moreover, accurate cost evaluation and accounting strategies will enable the aircraft designers to optimize their production capacity while preventing paucity of funds or wastage. Therefore, learning how to estimate the cost expended on an aircraft at every stage of the modelling, fabrication, operation and maintenance of an aircraft's layout is an essential skill for aspiring aircraft designers. So why wait? Start this course today!

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