Design Definition and 1000 Threads

  1. G

    Design a Go Kart - Step-by-Step Guide for Beginners

    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...
  2. E

    Which choice should be used for a hollow rectangular bar in MIL-HDBK-5J?

    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...
  3. D

    Book or free video course on alternator design

    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
  4. K

    Machine malfunction due to Cantilever design

    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...
  5. C

    Design of a Simple Weight Transportation System

    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...
  6. R

    Design of a short circuit kit for DUTs (switch, opamp, LEDs)

    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...
  7. MartinLoland

    Using KE in elevator-system to design brakes?

    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...
  8. D

    Design of deoxygenating system for offshore water injection

    Any ideas on how I could model a deoxygenating system and which software would be best to use to do so. Thanks
  9. D

    How to design discrete circuits for transistor beta changes?

    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...
  10. PhysicoRaj

    Design an audio power amplifier

    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...
  11. B

    Design a wind turbine experiment at the High School level

    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...
  12. S

    How to design a wind axial turbine working with an air stream....

    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?
  13. H

    Should Low Walls Rest on Top of Beams for Brickwall Design?

    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...
  14. N

    Mounting Shaft to Plywood or Plastic - Ideas?

    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...
  15. B

    How do I design a pressure vessel with given data?

    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...
  16. Digitz

    What are some effective designs for an egg drop project using limited materials?

    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...
  17. J

    Design Factor with known reliability

    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 =...
  18. gracepentinio

    How to design flow rate of a lubrication system?

    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.
  19. beyondlight

    Typical transistor design parameter [W/L]

    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...
  20. ToonBlue

    Engineering Can a Circuit Differentiate Between SMS and Telephone Signals?

    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...
  21. supak111

    Help me design a simple time delay (not electrical)

    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...
  22. STEMucator

    Building a PNP Cascode: A Design Exploration

    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...
  23. T

    Design a Digital Stopwatch: Advice & Components Needed

    << Mentor Note -- Thread moved from the technical Engineering forums so no HH Template is shown >> 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 track the...
  24. Michaelf5567

    T-Cork hopper/sorter design help

    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...
  25. louisnach

    Good at maths but don't know if i will be good at design ?

    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...
  26. T

    Engineering Optimize the design of a magnetic circuit actuator

    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...
  27. D

    Power Distribution Design -- why did the person get shocked?

    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...
  28. anubodh

    Different tread design v/s performance

    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...
  29. P

    Gear box design against specified engine specifications

    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...
  30. H

    Launching a ball with a flywheel design into a goal

    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...
  31. T

    Help with a problem to design a vessel

    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...
  32. wein7145

    Repeat History: Design a test to prove who is right spring

    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...
  33. S

    Need design for a rectangle "like" spray bottle

    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...
  34. R

    Masonary Wall Design for water tank

    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...
  35. E

    Gas Burner and Combustion Chamber Design

    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...
  36. B

    Short term, Light weight, Low volume Refrigeration Design

    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...
  37. lucioc

    Flywheel Leg Press Design - How is this being calculated?

    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...
  38. F

    Design of Experiments Ideas - Control Systems?

    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...
  39. mattyboson12

    Proximity Sensor, Design Project

    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...
  40. Y

    Design of an 'open' venturi water pump

    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...
  41. J

    Alternate fuel for TriAlpha Fusion Reactor Design?

    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...
  42. C

    How to design electrical system for a hotel?

    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...
  43. ulfurh

    Help with electromagnetic musical instrument design

    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...
  44. UF6

    Could Someone Look Over My Work? (particle accelerator design problem)

    Homework Statement You want to construct a simple particle accelerator and hit on the following design: you will take two oppositely charged plates with small holes drilled into them and set them up parallel to each other. You will create a vacuum between the two plates and fire a beam of...
  45. D

    Bandpass filter design - wideband

    I'm trying to design a bandpass filter with a BW of 50MHz in LTSpice, however my simulations aren't coming out as I'd like. I'm using the frequency transformation method, with a centre frequency of 2GHz., fractional BW 2.5%. I'd like a wider passband, however I can't seem to get away from the...
  46. S

    Atomic Layer Deposition Reactor Design?

    Is it made of quartz or stainless steel/aluminum or what? Does it matter which?that's all I need to know, I just can't seem to find if they can be made of standard vacuum metals or if they have to be quartz. Only really seen some diagrams mention quartz tubes but the pictures of large ones seem...
  47. S

    Electrical Design engineer or Electrical site engineer?

    hello guys... i m confused about my carreer, should i go for electrical design engineer or elctrical site engineer? which one is better for me?... and how can i get started? i recently did my Bachelor of elctrical engineering..than
  48. B

    Aerospace Eng. Student Struggling with Blended Wing Body Design

    Hello everyone! I'm a aerospace engineering student. I'm working in my own program for blended wing body aircraft parameterized design. I'm triyed to use Tornado program but it doesn't even allow me to setup the geometry, after introducing the chord the program goes in a bucle and when I stop...
  49. S

    B Control moment gyroscope design - question

    Hi all, Like a lot of folk on here I am interested in the idea of a CMG used to stabalise a single track vehicle.<< Link to CMG info added by Mentor >> https://en.wikipedia.org/wiki/Control_moment_gyroscope I have designed this; the pink discs spin in opposite directions and the pendulum...
  50. S

    Design & Build Electro-Magnet to Raise 1 KG weight

    Hi, I need to create an electromagnet that can lift a 1 KG Iron block that is kept at 30 cm away from the electromagnet. I have a DC power supply(RXN 305 D) that can provide a voltage of 0-30 Volt and current of 0-5 A. I need to limit the current used to maximum of 3 Ampere. Please help to...
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