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.
(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...
Hi guys,
Just wondering if there Is a way in multisim to design your own components from scratch? basically starting with the input and output pins and you fill in the gate logic on the inside.
Im designing an old school binary-BCD for 12 bits. I've got the theory all figured out, and I...
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...
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...
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...
Hello,
I am needing help with some calculations for my project. I have to design an electric Car design and have to include some calculations. Given the maximum speed of the car is 2Meters per Second and the the mass of the car is 1.45kg:
Calculate F
And how do i calculate the torque at the...
I have been reading about coil design and I have a question.
Is there any specific reason a coil design should utilize the entire winding area?
I keep reading about this in different literature but none of the literate i have read explains why.
I'm a programmer but weak on hardware so I'd appreciate your help. In a novel I'm writing there are about one hundred underground cities housing one million people in the US; the rest of our population is dead. Somewhat smaller percentage of survivors in Europe and Asia. We have several years...
I'm a retired engineer who lives on a sail boat. I'm tired of frequent replacement of my flags that tatter rapidly as they flap in the wind. I would like to suggest this as a challenge to other engineers. How can we design a tatterproof, flexible and affordable flag?
I added the word...
I am in a high school Precalculus class. We are about to have a project where we build bridges with PVC and twine. The goal is to hold as much weight as possible.
For this project, I believe we will be given 28 feet of PVC, a roll of twine, and 5 or 6 days to design and construct our...
For my physics class, my group is assigned to do a following project.
Design and construct a machine that will safely transport a set of eggs from a bottom corner of a 1x1x1 meter virtual cube to the diagonally opposite upper corner (e.g. bottom-front-left to top-back-right) using at least...
Hi everyone! Design of electrical systems for buildings is the field I want to engage in the future. I have already basic concepts learned about this. But I want to improve myself in this field. I am looking for a reliable and organized reference. Please help me choose the book/reference I...
My car is just a plain green Mazda 2, and I'm starting to see a lot of those around. I wanted mine to be different somehow, plus the plain green is getting kinda stale. I was wondering if anyone here has had any experience with getting a design painted on their car. I have some questions about...
I search information about design the software and the hardware of controllers especially servo controllers.
I have several questions about this subject and I will glad if you can write your opinion and add some relevant links.
A. I want to understand these things:
A.1. What is servo...
Hopefully this post isn't too long, I am going to try to give you as much relevant information as possible so you can answer this easily.
For a class project, I am required to design a Moore Machine based on a problem that we were given. I have already done this with a Mealy Machine, but I am...
I have a FBD I'm not quite sure about. I attached what i have along with the original picture. 2 pin supports plus the other one on the hydraulic jack. How does it look? Here's my problem:
The chute of a concrete truck for delivering wet concrete to a construction site is shown. The length of...
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...
This is for a anechoic chamber for testing the exhaust noise from a particular engine, it will just be an engine test cell with the dyno in an adjacent room.
As the dominant noise from an engine is the engine itself and the exhaust, how would one separate them? also is there any info on where...
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...
Hi experts,
I wonder anyone of you have an idea on whether we can include a discrete component (specifically a capacitor) into an "Ansoft Maxwell 3D" eddy current design. Little more description: I do have a specific eddy current design with a coils. I need to add a series capacitor and...
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...
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...
Hi i am currently doing my dissertation in which i am designing a vertical axis wind turbine design that is a modification of that of a savonius design. A major problem that i am having is being able to predict the torque value of torque for my design in order for me to then predict the...
i want to design a diode circuit where the Vo vs. Vi looks like this:
Vi between -2 and 2 Vo = Vi
Vi between 2 and 4 Vo is a linear with slope 0.5
Vi between -2 and -4 Vo is a linear with slope 0.5
Vi>4 Vo=3
Vi<4 Vo=-3
how can i do this?
Homework Statement
The memory components in a personal computer require voltages of -12 V, 4 V and 12 V all with respect to a common reference terminal (you can assume this to be the ground). Design a circuit to achieve this if the total power supplied to the divider circuit is 80 W and the...
Hey Everyone,
I'm a mechanical engineering student and I was wondering if there was any good book regarding IC Engine design; which includes timing belt design, camshaft, crankshaft, rocker-arm, pump design etc.. a whole in one package that design engineers use for designing ic engines...
I am planning to install a Solar system of 6KW of electricity output enough for a water pump (submersible) and a small home.
I need help in designing a mounting which can hold upto 24 solar-panels (20kg each) at a height of 6 meters from the ground, and I also need to make an adjustment...
i'm looking to design a generator, can someone just help me out, the following are the main criterias:
It'll have a power rating 30KW
RPM like between 120-200, so basically its a low RPM design;
i plan on using Carbon fibre for all the components on the rotor other than the power generating...
hello everyone.
I am in desperate need of help from some mechanical design/materials engineers/students. I am an Electrical/Electronic Engineering student currently completing a project and require assistance on some mechanical design issues. I have searched numerous websites and books...
Problem
Given the power that is needed to be output by the capacitor - P
the length of time that the capictor must give off that power - t
the maximum operation voltage that the capacitor can operate at- V
the dialectric constant of several materials - ε
the breakdown field of those several...
Homework Statement
In this exercise we want you to apply your knowledge of Relay Logic Instructions to
design a program which will control the ProSim-II Door. The Door System includes a
Reversible Motor, a pair of Limit Switches and a Control Panel, all connected to your
PLC. The program...
Homework Statement
The statement is this one... (from the horowitz "The Art of Elctronics")
http://www.electroyou.it/forum/download/file.php?id=13691
Homework Equations
How should I proceed, i really didn't understand how this VOM works, i mean, i understood, that there a max scale...
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
Homework Statement
I have to design a scotch yoke mechanism to be connected to a motor
See the below pic
http://www.bime.ntu.edu.tw/~dsfon/Mechanism/figure/intro02.gif
The difference is I have to modify the slot to make the shaft dwell for 0.15 secs on the one extreme side (right hand...
Hi, I have to make the classic egg drop contraption but we're only allowed to use plastic drinking straws, index cards, and hot glue.
the width also has to be smaller than 4x4 inches but it can be as tall as we want it to be (but preferably small)
and it has to have a door of some sort...
Not sure if applicable here but I was doing some reading on ITER the fusion reactor. I have read about "Test Blanket Modules" being designed by both China and the United States. I understand that these blanket modules will be used to surround the reactor however I was wondering if these test...
Statics Springs "Design Problem"
Homework Statement
Here's a problem I've been very determined to figure out, but I can't. I attached the picture. This single problem is 5% of my grade, so I'd appreciate any help!
A plate storage system for a self-serve salad bar in a restaurant is shown. As...
Homework Statement
A professor gave a pipe network problem to be solved by the Hardy-Cross method. However when I attempted to create a scale drawing of the figure to get a better idea of the problem I realized it is physically impossible to create his design. Now i am wondering if because of...
Hi, I'd like to learn some mechanical design. My knowledge in mechanics is mainly from general physics and a basic course in engineering mechanics. Is this enough to take on intermediate level mechanical design? Should I take a few ME classes? If so, what would you recommend? What is a good free...
Hello
I want to design a pneumatic cylinder for race car lifting. The cylinder should work in such a way that it can lift the car 4 inch from the ground in 0.5 sec. And the max pressure is 250 psi. Can anybody please help me out of this. What are the factors that I have to take into...
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...
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...
I am in need of some 1750khz intermediate transformers for an old tube project. I can find a few 455khz but not 1750khz. Removing turns from a 455khz IF transformer would raise the frequency but what would that do to the impedance?
I thought I would be able to find quite a bit on the...
Given the same voltage and current, hence electrical power, what kind of core design can maximize the "reach" of an electromagnet? For example, with the magnet above a table, axis pointing down at the table, attempting to lift a small iron washer, is there a core design that significantly...
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...
Ok I had these 3 questions: I believe I have ansered the first 2 but I' am just stuck on the third.
1. an aircraft has a glide ratio of 12 to1 m, a building that is 45m high lies directly in the glide path, the plane clears the building by 12m, how far is the run way from the building?
ANS: I...
Hello,
My name is Ryan and I'm a volunteer instructor with the local Royal Canadian Air Cadet squadron. I'm looking for ways to try and make the kids' aviation lessons more interactive and hands on, and so I've decided I'd like to build them a small wind tunnel, purely for flow visualization...