Design Definition and 1000 Threads

Hello guys, I am working on designing a flywheel to couple to a generator however i have a small problem and i have low knowledge in flywheels I have a pinion rotating at w = 14.13 rad/sec and torque Tpinion = F*Rpinion = Mass of inertia *alpha pinion All is known I can find Tpinion euqal...

I want to design electromagnet for my project. I want to know which formulas are used while designing electromagnets and methodology if we know repulsive force we require at a distance of 25mm from one end of electromagnet.

Hi, I have a question concerning car front suspension geometry/design like the macPherson suspension. I would like to know the influence of geometrical factors in the suspension behaviour. The factors in which I'm interested are : spring/damper angle, spring/damper position relative to the wheel...

Hi pf, I know that the stream turbine blades are twisted in design so that when steam is forced across the face there is a torque exerted on the turbine. If you look closely at the blades then they are roughly at a 45 degree angle to the oncoming steam which means a component of the force from...

how can i design an even number generator with a 4 bit counter without using any flip-flop , Using only 4 bit counter?

Hey, i would like to know how i can make a DC-voltage-sweep in CST Design studio with Current. I have a simple circuit consist of a diode and i want to see what is the current across the diode with different values of dc voltage. Does anyone knows, how can i do that ? Many thanks !

Homework Statement I'm not sure if this belongs here, sorry if it does not. I am trying to find the most amount of mass a bridge can hold before deforming/collapsing. I was trying to factor stress/ultimate tensile strength into it in a way. Is there a way I can calculate ultimate tensile...

Hi all, I am learning DDL ( as opposed to GUI ) table design in MSSL2014. EDIT I am given a table printout and I want as an output the(a) DDL code that would output the given table. Sorry, I don't have a scanner nor the original file in my PC, I have a table diagram in a piece of paper. I...

Hi, i am a student of bachelors of mechanical engg. (2nd year). I want to build a go cart. But i don't know the basics. I don't know a thing about automobiles. I am learning the catia software for designing. But i don't know what kind of "calculations for go cart" must be required to design the...

I have a hollow 2024-T3 rectangular bar and need to check its mechanical and physical properties. So i went through the MIL-HDBK-5J, and it have 3 choice for this material; 1. Sheet 2.Drawn tubing 3.Extruded Bar,rod,and shapes. so for hollow rectangular bar, which one should i choose. 2 or 3...

Hi All, Does anyone perhaps now of a book or free video course on alternator design, Like where I can learn about how to design alternators? Sorry if I posted the question in the wrong "apartment" of the site. Thanks Dilan

Hello all! I work for a machine design & manufacturing firm. We also do machine repairs & refurbishing work. We currently have taken up a project where-in an we have to solve a critical problem in an automatic part washing machine. The machine is a multi-stage concept, wherein the parts are...

Hey guys, hope this is in the right place first off, but anyway, for one of our engineering projects we are required to design a "rover" that can transport a maximum of 40 pounds (the increments in weight increases by 10lbs per run starting at 10lbs and ending at 40) a minimum distance of ~20...

Hi folks, I would like to clarify few doubts on my mini-project as mentioned below: I am designing a small kit using a transistor (2N3904) and an OP-AMP (LM741- Voltage follower) with few resistors connected to them. My power supply voltage value is 5V. Please refer to the below picture for...

Homework Statement Hello! I am doing some rough design on an elevator-system and I have now come to the brake. Here is my system: The text is norwegian but "rdriv" in the first image is "Rdrivskive" in the second image and it's this wheel that is dragging the rope. The "Brems" is where I...

In my circuits/active devices course we had to make amplifier designs with various type of transistors (BJT, JFET, MOSFET). In each design the transistor beta parameter played an important role in deciding which resistors to use in the final amplifier circuit. This beta parameter changes widely...

Hello, I was dissecting an old TV when I came across a set of speakers. They're 8 ohms, though I'm not sure if they're 8w or 6w.. I decided to make my own portable speakers (mono), which could be connected by means of an aux cable to my smartphone. I don't know what's the output voltage of...

Homework Statement [/B] Plan an investigation to evaluate wind power as an energy source with equipment: • model wind turbine • multimeter to measure the voltage generated • anemometer to measure wind speed • hair dryer to generate wind power, set on cold • metre rule to measure...

I want to design a wind toubine ,I know the wnd vel,I need certain amount of power ..How to design it and how to calculate at which rpm will it rotate to deliver my required power?

1.Hey guys! I will need to design a floor with slab, beams and columns. Brickwall should rest on top of beam as possible. How about low wall, does it needs to rest on top of beams as well? Thanks! 2. No equation 3. I've designed some, but without low wall, that's what made me curious...

Hello, As part of a project I'm working on, I need to mount a shaft to a sheet of plywood or plastic. On this shaft will sit a gear which rotates. The shaft, however, should not rotate or move in any way. I have tried using a threaded shaft, mounting it to wood just by screwing in two nuts on...

I have been asked to design a pressure vessel and the data given to me for the problem is - content -oil of density 0.9 g/ cm3. material with ultimate tensile strength of 70,000 psi. factor of safety 3. volume 50 m3. How do I calculate the internal pressure and diameter, which I will need to...

Objective: Design/construct container to safely land a raw egg when dropped onto pavement from top of bleachers. Materials: Standard Toothpicks, Standard Straight Drinking Straws, Standard Sewing Thread, Cardboard, Masking Tape Requirements: Egg cannot crack. Container mass < 30 grams without...

In my textbook we are given the equation for design factor as: ## n_d = \frac{1+\sqrt{1-(1-z^2c_s^2)(1-z^2c_\sigma^2)}}{(1-z^2c_s^2)} ## where z = the z score, this is determined from reliability which is given in the problem. A high z-score means we demand a very high reliability. ##c_s =...

I am currently designing a lubrication system which uses a positive displacement gear pump. So how can I get the flow rate of a lubrication system? i don't know which equation to use. thank you so much.

I would like to know a typical W/L value for a MOSFET transistor. L = channel length W = channel width/transistor width I am currently designing L to be L = 0.0001 cm for a transistor. Cox = 5nF mobility 1155 cm^2/Vs K = 0.583 mA/V^2 This gives W = 20 cm. But this is way to large for a...

Homework Statement I want to design a circuit that is able to differentiate an sms signal and also a telephone signal. What I mean is the telephone signal is when someone calls you. Example , when someone sms you , your circuit will detect the sms signal and LED 1 will light up (use to...

Hey everyone I'm trying to design a simple time delayed device. Device could me mechanical but it doesn't really have to be as long as it does what I want. Just need something that is relatively small could be wide and tall just not thicker then 1 inch. The device should have a arm/button...

Hi everyone. I have seen the design for an NPN Cascode many times, but I want to build a PNP Cascode. I have scoured the internet for a standard design, but to no avail. The image below is that of a NPN Cascode. I want to create a PNP cascode by flipping things around. I have placed a red line...

<< Mentor Note -- Thread moved from the technical Engineering forums so no HH Template is shown >>[/color] Project Description: Design a Digital Stop Watch using discrete electronic components Functions: Start, Stop, Reset Should be able to count up and count down The interval time should...

First post here. Looking forward to what I find here. I've always enjoyed fabricating and what not. So my dad opened a distillery and I went down to help out with bottling last week. It's an assembly line for sure. Each person has one job and you just pass the bottle to the next guy. Well...

hello everybody i have a question, i am good at maths and physics and thinking about study engineering but one think something scares me is to design. In fact i think i will love all the theoritical part of the study (maths, physics, static , dynamics exercise) but i don't know at all if i will...

Homework Statement The aim is to optimize this actuator to get the maximum force from it. Here is the circuit diagram below: Homework EquationsThe Attempt at a Solution Length of air gap top (Ragt in diagram) = 0.5 mm Length of air gap centre (Ragc) = 0.25 mm Current in coil = 0.8 A (I...

Hello I am an electrical engineer freshly out of school and i was wondering if anyone could help me reach an answer to this design problem. I am attempting this problem solely for personal knowledge because in school I never took a course on distribution design. I found this problem looking...

How significant is the effect of tire tread pattern/design on the performance.I searched a lot but could not get any satisfactory answer. I know some designs favour better grip over speed (high rolling resistance), some are better for wet conditions but is the difference in tread design very...

Dear all,i have recently been provided a task of designing a basic gear box for a vehicle having following engine specifications: 127cc, max torque: 7.8N-m Max. RPM: 3200 How do I proceed for this? Please guide me what all additional information is required for this calculation and what all do...

Hello all, My robotics club at school will be entering the VEX Nothing But Net competition. We are beginning to design the robot and it's launcher specifically. We want our flywheel design to be two wheels on each side, on a horizontal line like this. We would squeeze the balls between the...

The problem involves a a heater and three jacketed reactors. The reactors are heated by water supplied by the heater. Determine the heater size(in kW) required for this service if the heater is to be sized so that it is large enough to handle all three reactors when they operate at full...

Homework Statement Not surprisingly there is an old forum post on this topic: https://www.physicsforums.com/threads/proving-force.46215/ However it doesn't contain the answer. Reposted: Two physics students are having a debate about the best way to define a force scale using rubber bands. Each...

to keep it simple, I will explain what I basically need. Imagine a rectangular Plastic brick. With 10 small holes on the bottom that would release fluid. There is a cap on the top of the rectangle box that the fluid will be poured into. And a press style button on the side of the rectangle to...

Are there any good design resources on masonary wall design? Specifically, I was considering an above-ground, open-to-sky, rectangular tank storing approx. 25 m3 of water in it. Is it possible / economical to build such a tank out of masonary alone or does an RCC construction become economical...

Hi guys, I want to design a gas burner and combustion chamber. I use natural gas as fuel. I want to control air to fuel ration, so air flow has to control. I have an air compressor as air flow source. Clearly, it's needed a mixture tube before the combustion chamber. Now I have some...

Hello Guys, This is my first time posting here - just wondering if anyone has some insight on a project that I am working on. I want to be able to temperature control an insulated shoe box sized volume at ~5 degrees Celsius for about 20 minutes. The main constraints are that I would need the...

Hello guys, I'm looking for some help. I'm reading a paper called "On Flywheel Leg Press Design and its Benefits". I'm interested in calculate the forces that a flywheel machine that I'm building (used for gym exercises) will require the user to use it. Following this paper, they start to...

Hi everyone, I'm taking a Design of Experiments class which is focused on statistically designed experiments. I'm a bit lost for project ideas and this is my first graduate class. Would anyone have any ideas for an experiment that would have at least controllable factors that might have...

I've taken a year out of university to work at a design company and they have given me a project to design/make a test rig which measures the position of a metal shaft within an actuator assembly to check if its within a +/- 0.2mm tolerance. Some of the key requirements are: No contact with...

Hello For my study I'm making a specific design I'm trying to design a ballast chamber which i want to empty with a venturi pump I attached a schematic image of the idea Through pipe A a liquid is pumped with around 150m3/h through a 6'' pipe. The pipe is narrowed at the end, with a space...

http://news.sciencemag.org/physics/2015/08/secretive-fusion-company-makes-reactor-breakthroughAbove is a link to a news story about the recent Tri Alpha Energy “breakthrough”. It looks to me like a very nice development in increased stability of a proposed reactor design. Tri Alpha emphasizes...

So here is the problem, I major in electrical engineering and my sister works in a small furnishing company and recently the company got an offer to furnish a hotel with 25 rooms. And she asks me if I can design the electric circuit for that hotel.In school I learn electric machine and how to...

Hello everyone, For the past 4 years I have been working on a new type of musical instrument that fuses together elements from electronic music into the acoustic realm. The instrument consists of 26 strings inside a wooden enclosure that are actuated (or "bowed") by the use of electromagnets...