Aircraft Design
              Aero474
        Dr. Mohammad Tawfik
E-mail: Mohammad.tawfik@gmail.com


                    ...
Preliminary design




                     Aero474
              Aircraft Design
Problem definition
• Who are the customers?
• How should we assess if the product is viable?
• Can we completely define th...
The Customer (Stakeholders)
●   Clients
●   Operators
●   Director
●   Sales Team
●   Environmentalists
●   Politicians
● ...
Aircraft Viability
 ●   How is the aircraft going to be judged?
A. W. Bishop of British Aerospace observed:

The message i...
Understanding the problem
●   Has the problem been considered as
    broadly as possible?
●   Have you identified all the ...
Innovation
●   What are the new technologies and other
    innovations that will be incorporated into
    the design?
●   ...
Organising the design process
●   Student's Check-list
●   Team-working
●   Managing design meetings
●   Writing technical...
Student's Check-list
●   Initial Question:
    ●   What is the problem to be addressed?
    ●   What information is availa...
Technical Tasks
●   Which configuration?
●   Initial sizing
●   Aerodynamic and performance estimates
●   Check validity
●...
Team-working
●   There are many advantages to the team approach to
    design:
●   Teaming brings together the strengths o...
Team-working
●   Teaming also has disadvantages:
●   The success of the team may be limited by its weakest
    members.
● ...
Homework #2
●   Read Chapter 11 of the textbook!
●   Prepare a summary of the chapter in the form of a report
    and a pr...
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02 Preliminary Design 01

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02 Preliminary Design 01

  1. 1. Aircraft Design Aero474 Dr. Mohammad Tawfik E-mail: Mohammad.tawfik@gmail.com Aero474 Aircraft Design
  2. 2. Preliminary design Aero474 Aircraft Design
  3. 3. Problem definition • Who are the customers? • How should we assess if the product is viable? • Can we completely define the problem in terms that will be useful to the technical design process? • What are the new/novel features that we hope to exploit to make our design better than the existing competition and to build in flexibility to cater for future developments? • What is the best way to tackle the problem and how will this be managed? Aero474 Aircraft Design
  4. 4. The Customer (Stakeholders) ● Clients ● Operators ● Director ● Sales Team ● Environmentalists ● Politicians ● etc... Aero474 Aircraft Design
  5. 5. Aircraft Viability ● How is the aircraft going to be judged? A. W. Bishop of British Aerospace observed: The message is clear – if everyone can agree beforehand on how to measure the effectiveness of the design, then the designer has a much simpler task. But even if everyone does not agree, the designer should still quantify his own ideas to give himself a sensible guide. ● Investors ==> Return on investment ● Civil aviation ==> Direct operating cost ● Military ==> Life cycle cost ● etc... Aero474 Aircraft Design
  6. 6. Understanding the problem ● Has the problem been considered as broadly as possible? ● Have you identified all the ‘real’ constraints to the solution of the problem? ● Are all the constraints reasonable? ● Have you thoroughly examined all the non- technical constraints to determine their suitability? Aero474 Aircraft Design
  7. 7. Innovation ● What are the new technologies and other innovations that will be incorporated into the design? ● How will such features provide an advantage over existing/competing aircraft? ● How can the risk to the project be mitigated? Aero474 Aircraft Design
  8. 8. Organising the design process ● Student's Check-list ● Team-working ● Managing design meetings ● Writing technical reports ● Technical presentation Aero474 Aircraft Design
  9. 9. Student's Check-list ● Initial Question: ● What is the problem to be addressed? ● What information is available? ● What data on previous and competitor aircraft designs can be found? ● Do we need to take into account any specific issues? ● Can you write a complete aircraft operational requirement? ● What aircraft concepts might be considered? Aero474 Aircraft Design
  10. 10. Technical Tasks ● Which configuration? ● Initial sizing ● Aerodynamic and performance estimates ● Check validity ● Generate initial technical drawings ● Refine initial estimates and conduct parametric study ● Produce final drawings and perform SWOT analysis ● Finalize report and presentation Aero474 Aircraft Design
  11. 11. Team-working ● There are many advantages to the team approach to design: ● Teaming brings together the strengths of a diverse group of people. ● Team consensus usually results in a better product. ● Everyone on the team has a backup person to check his work. ● Sharing the task makes the job easier and more fun. ● Teaming allows each member to use his or her talents in a more focused way. Aero474 Aircraft Design
  12. 12. Team-working ● Teaming also has disadvantages: ● The success of the team may be limited by its weakest members. ● Some members may tend to procrastinate, delaying the work of the entire team. ● Teaming makes it easier to blame problems on the least liked or least productive member of the team. ● Personalities can get in the way of progress. ● The most energetic team members usually do more than their fair share of the work. Aero474 Aircraft Design
  13. 13. Homework #2 ● Read Chapter 11 of the textbook! ● Prepare a summary of the chapter in the form of a report and a presentation on it and the following ● Prepare a task breakdown and Gantt chart for the project work ● Prepare a document presenting how your meeting will be managed (a template for agenda and minutes should be developed) ● Assign Roles including titles and responsibilities of each team member Aero474 Aircraft Design

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