Design Definition and 1000 Threads

A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process, or the result of that plan or specification in the form of a prototype, product or process. The verb to design expresses the process of developing a design. In some cases, the direct construction of an object without an explicit prior plan (such as in craftwork, some engineering, coding, and graphic design) may also be considered to be a design activity. The design usually has to satisfy certain goals and constraints, may take into account aesthetic, functional, economic, or socio-political considerations, and is expected to interact with a certain environment. Major examples of designs include architectural blueprints, engineering drawings, business processes, circuit diagrams, and sewing patterns.The person who produces a design is called a designer, which is a term generally used for people who work professionally in one of the various design areas—usually specifying which area is being dealt with (such as a fashion designer, product designer, web designer or interior designer), but also others such as architects and engineers. A designer's sequence of activities is called a design process, possibly using design methods. The process of creating a design can be brief (a quick sketch) or lengthy and complicated, involving considerable research, negotiation, reflection, modeling, interactive adjustment and re-design.

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  1. marellasunny

    Design of 4 stroke IC engine from few parameters (bmep, B.P, piston speed)

    (I have trouble in finding the stroke length and fuel flow rate) From Heywood,E2.11 You are designing a 4 stroke CI to provide a brake power of 300kW,Naturally aspirated at its max rated speed.Based on typical values for brake mean eff.pressure(bmep){700kPa to 900kPa} and max mean piston...
  2. P

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  3. F

    Determine the Spring Design given Spring Stiffness of 400 N/m

    I am trying to design a spring given the following measurements: Spring Stiffness is 400N/m or 295 ft lbs Outer Diameter of spring is 0.25 in Free Length is 3 cm or 1.18 in Load is max: 5lbs I am having trouble with: Calculating the Spring Diamter so as the spring is not over damped...
  4. J

    VAWT Airfoil Design: Learn How to Calculate Power Output

    hello folks, I am in mechanical stream & am working on a project of VAWT of power 300 watt. I found a link where i can calculate power output for different parameter. Here's the link: http://usvawt.com/cgi/windpower.cgi where i took height as 2m and width as 3m. Now need to design...
  5. S

    Design preperation for metal molding

    Hello everybody I have designed two small metal pieces (approx 30x30 mm) currently in 3D design that I now want to prepare for production by casting/molding. They are both intended for mass production hence price is a big concern, even the very small designchanges that may lead to reduction of...
  6. A

    Electric model Car design calculations help.

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  7. H

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  8. C

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  9. anorlunda

    How Can Engineers Design a Tatterproof, Flexible, and Affordable Flag?

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  10. T

    Help with plastic bridge design

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  11. S

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  12. P

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  13. L

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  14. I

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  15. M

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  16. J

    How does this statics design FBD look?

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  17. B

    Scale Design Using an Angle Measurement for Weight

    Homework Statement I have to design a scale to weigh something under 1kg and all am given is a yard stick, 10 ft of fishing line, a 500g known standard mass, and a protractor. Use an angle measurement for weight. Don't just balance weights on a see-saw Homework Equations - The...
  18. H

    Design of an Semi-Anechoic chamber

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  19. U

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    Homework Statement The mass of a car that acts on one wheel is 100 kg. The elasticity (spring) constant in the suspension system of that wheel is k= 10^4 N/m: Design the strut (find the friction/resistance constant c) such that any vertical motion of the wheel (set up for example by going...
  20. J

    How to include a capacitor to an Ansoft Maxwell 3D eddy current design

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  21. T

    Designing Water Filtration System - Urgent Help Needed

    Hi all, I am having trouble finding a website/researching to find more about how I can improve this system: http://www.waterfortheworld.com/file...ion_Manual.pdf SPECIFICALLY I need help to think of how to have a cover on the filter or have a cap/nozzle on the hydroxide solution-if it is...
  22. C

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    Hi all, Need help determining what size diameter for some pipe. I just want someone to check my calculations, hopefully they're okay. I attached a quick sketch of the set up. Here are the knowns: Qmin = 4000gpm ΔP = 32psi L = 65ft e(roughness of commercial steel pipe) = 0.00015ft...
  23. B

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  24. N

    I want to design a diode circuit

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  25. P

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  26. S

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  27. J

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  28. dexterdev

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  29. S

    Design a 30KW Generator: RPM 120-200, Carbon Fibre Components

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  30. J

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  31. G

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  32. P

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  33. N

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  34. M

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    Hi, Are there any restrictions on what a design matrix can be? I have no background in this area, I'm just wondering from the wikipedia article, is it a mathematical entity or simply a name? Can it be all zeros, diagonal, or anything I want? Thanks Mike
  35. C

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  36. N

    Egg Drop Design Challenge: Straws, Index Cards and Hot Glue

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  37. F

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  38. J

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  39. T

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  40. R

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  41. D

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  42. H

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    hey >>>> i have tow Questions about conveyor design: What are the Variables influencing the design of conveyor ? all i know is : Angle of surcharge
  43. Z

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    1. My assignment is to create an egg catcher to successfully catch an egg dropped from a height of a meter, the only materials I can use is: 1 Piece of paper 1 piece of aluminum foil 2 straws 20cm of tape What I was planning to do was create a cylinder with the paper and using the...
  44. V

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    Hello. I was wondering if someone could explain to someone with no electrical engineering background where would one place the resonator whose sole responsibility is to amplify sine waves at a particular frequency while ignoring other sine waves. Would this resonator be located by the antenna...
  45. J

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  46. S

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  47. D

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  48. I

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    Hey guys I'm BRAND SPANKING new to posting anything an any forum ever...this is a last resort at the end of much research, brainstorming and desperate googling... My problem: We've built a transformer tank to house the core and this will be filled with oil, a radiator was built as well...
  49. Z

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  50. R

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