Design Definition and 1000 Threads

  1. STEMucator

    Engineering Design a Multiplexer Circuit for A and B Outputs Based on C Input

    Homework Statement Design a multiplexer circuit given the data such that: When ##C = 0##, the output ##X = A##. When ##C = 1##, the output ##X = B##. The truth table is displayed below: Homework EquationsThe Attempt at a Solution I wanted to make sure I understood this and I wasn't...
  2. kannanraja

    Can strong plastics be used as an alternative to leaf springs?

    to make leaf spring we can use any plastic materials ? what are strong plastics? please find it friends
  3. K

    Looking for some help on a mechanical design

    I'm a junior at my university in electrical engineering and we're tasked with created an original project for my electricity and magnetism theory class. I've come up with something I want to do, however a fair amount of the design for this project is pretty far out of what I know how to do...
  4. B

    Innovative Elevator Design: Pulley & Belt System

    I am designing an elevator system and i wanted to use timing belts with a counterweight. After almost fully completing the design it was brought to my attention that my pulley and belt setup was not the best choice. Any insight on what anyone thinks would be great! The top pulley and belt...
  5. WhatmoughG

    Designing a Kite for a Truck Adventure

    Hey, I am embarking on a drive to the arctic circle. I have spent a bit of time googling looking for a kite to pull behind my truck to film the adventure and can't find much useful information. Is there anyone that could design or point me in the direction of a place to design a decent kite to...
  6. W

    Design of Power Factor Correction Capacitor?

    Hello... kindly help me out in designing of power capacitor to improve the power factor as the given load is 950 KWatt and power factor is 0.7, as i want to improve the power factor to 0.92 then what formula i should use to design the capacitor as the Voltage line to line are 400Volts
  7. T

    Laboratory HVAC Design Inquiries

    I'm doing a university project on HVAC design of a laboratory(Agricultural Products).I'm having trouble verifying whether I have understood what I have researched correctly This is what I have understood from what I've read.First I would calculate the cooling/heating loads as I would have from...
  8. J

    Need help on designing a conceptual HALE UAV

    Hi everyone, I am a High School student (final year) and am doing an extra-curricular project. Having complete autonomy on what we do the project on, I choose to design a High-Altitude Long-Endurance (HALE) UAV, such as the QinetiQ Zephyr [http://www.airforce-technology.com/projects/zephyr/] or...
  9. G

    Microprocessor Design: Navigating the Intersection of Hardware and Software

    Okay I'm a second year electrical engineering student and will I'm thinking about going to deep down to the metal part of computers, I mean how to build microcontrollers and processor.I gave it some thought,and I looked at the computer engineering classes and all of them were about software...
  10. N

    HV psu design and assorted questions

    Hi At the moment I am trying to design a variable HV psu for some projects (some of which haven't even been though up yet, but I want to ability to run everything for hv off of the one psu). The idea is to use a transformer(which would double as an isolation transformer) with a 600:2500 ratio...
  11. J

    Physics Car Project: Honors Physics Student Seeks Ideas & Help

    Hello all! I am a high school student who is taking my first physics class, Honors Physics. I have taken mechanical engineering classes prior to this class. We have recently been assigned our major project of the year: The Dreaded (by some) Physics Car. Our goal is to design and build a...
  12. P

    Controller Design with Bode Plots

    I have two questions. One theoretical, and one pertaining to the homework question below. The theoretical question for which I am having trouble. When designing a controller to compensate a process using Bode Plots, why does my book seem to just use the forward loop gain rather than the...
  13. J

    Design a New Power Plug to Reduce Copper Consumption

    I'm a student from Newcastle University from Singapore Institute of Technology (A new launched University in Singapore) and am majoring in Electrical Power Engineering. My current final year project requires me to research on BS1363 and try to reduce the amount of copper usage as we know that...
  14. M

    Is an Acme Thread Suitable for Plastic Bottle Caps?

    Hi, My question regards a plastic bottle that I'm designing. For the threading that fits the two parts together, will and Acme thread work? This is how I've designed my part, but I can change the thread profile if need be. Also, is there anything that I need to know regarding the pitch? I have...
  15. I

    How Can a Circuit Compare Two Voltage Sources?

    hi all, i need a favor; could someone design a simple circuit whereby * it takes two constant potential sources (V1, V2) as inputs & then * { outputs V1 , V1=V2 } { outputs 0 , V1≠V2 } what i found tricky was that these were voltage sources, so that kinda eliminates being able...
  16. Y

    Boat Hull Design: Stability Through Tunnels?

    So I go into a debate this morning with a co-worker about a boat hull design. He is stating that if we create tunnels in the bottom of the boat that run longitudinally and are capped on the bottom but open on the ends they will trap water and act like ballast tanks thus adding stability when...
  17. K

    Pressure vessel Design - Splay out concern

    Dear Members, The existing design for the pressure vessel is an end cap bolted to the body which is not designed to any pressure vessel code. Currently I'm trying to qualify this pressure vessel to PD5500 code. Due to the derated allowables in the code i couldn't go with the bolted...
  18. O

    Confused about declaring digital design variables?

    An example: A car that senses if you have your seat belt on and the door is closed I can declare: D - for door S - for seat belt D is 1 is door is open, 0 if door is closed S is 1 if seat belt is on, 0 if it's off This is all very straight forward and can be implemented with combinational...
  19. P

    What is the optimum pitch angle for ceiling fan blade design?

    For the final year project that i am doing, I need to design a high efficiency ceiling fan blade with airfoil section, tapered and also twisting. Can anyone tell me how can i obtain the optimum pitch angle for different section of my ceiling fan blade?
  20. G

    Designing Spacecraft for Hard SF Battles & Piracy

    I'm going to write a (semi) hard SF. I wonder whether i left out something from spacecraft design, or got something wrong?Armed cargo ship (used for piracy/commerce raid also) At the back of the ship, a large block contains the fusion reactor, the main ion thruster, the manuevering ion...
  21. Tejas Rathod

    How to design a simple temperature controlled electrical heating system ?

    Hello, I have a cylindrical aluminium tube ( Diameter- 8cm, Length-15 cm, Thickness - 0.5cm ). It is insulated from bottom and open from above. I want to raise the temperature inside the tube maximum upto 300 degree celcius in a controlled fashion. I want to use electric coils to heat it. Can...
  22. S

    Optics: Design of Beamsplitter Ge on KBr substrate

    Hi there, I am making a beam splitter for an FTIR, but I do not know the anatomy of a beamsplitter of this type, does anybody have information on the design of these? I plan to order KBr crystal windows and apply the Ge coating myself using physical vapor deposition and assuring quality with a...
  23. H

    Designing a Spaghetti Bridge to Support 2kg of Sand: Tips and Restrictions

    Hey y'all, I am in the 11th grade and have been assigned a spaghetti bridge project. Our teacher taught us nothing about bridges or structures, but only the basic forces. We were instructed to research designs of bridges online but every website or forum that I have found has had a different...
  24. B

    How To Design Solonoid Coil for AC Voltage

    Hello Friends, Can you help to solve the problem of my solenoid coil as before i created 12VDC coil & its working fine thanks for that help guys. but now i want 240 VAC solenoid coil. so can you please help me which SWG I have to select. how many turns have to select..i want the equitation how...
  25. sundas03

    NiMH Battery Management System -Circuit Design

    how to design a bms circuit for nimh. we have 11 cells in one battery pack and and all the cells are in series, if one cell discharge rapidly then how to moniter it through controller?
  26. C

    Need help with project -- power steering system design

    Design Project You will undertake a detailed engineering design of a specified product. This will include: - Analysis of all functional requirement of the product - Consideration of various preliminary design options (possible solutions) - Detailed analysis of engineering performance...
  27. M

    Learning strategy for mechanical design (machine elements)

    Hi, I would like to establish a advancing/learning way to learn and understand machine elements. Today I tried to search for hydrodynamic radial sliding bearings on search engines but I have find only two results. Is something wrong for it? it should have another names...
  28. B

    Digital design code converter help

    Homework Statement design a code converter that converts a decimal digit from the 8 4 -2 -1 code to BCD. Homework EquationsThe Attempt at a Solution so i listed out the BCD order from 0 to 9 and listed the weighted 8 4 -2 -1 code so that the weights would equal to the BCD equivalent. 8 4 -2...
  29. L

    Solar Updraft Tower turbine design

    I'm attempting to design a turbine for a small scale solar updraft tower. It produces between 1-3 m/s of air flow in a 0.3m diameter tower. I'm in need of resources that can guide me on designing the turbine fan. I've already got the Wind Energy Handbook, however I'm not even sure if following...
  30. Y

    Design a Winning Egg Capsule Challenge

    Homework Statement Parameters: 1. Design and build an egg capsule within a volume of 10cm x 10cm x 10cm. 2. There must be a lid opening to insert the egg. 3.The capsule must be drop ready within 60 seconds or less after obtaining the egg from your instructor. 4. Drop time is non-negotiable, be...
  31. R

    Design of Cheap Packaging for Pressure Sensor (Piezoresistive)

    Dear Colleagues, I am working in the design of one packaging for pressure sensor (piezoresistive), this packaging should be really cheap, I want to use a layer of parylene to cover the surface of the Silicon Pressure sensor, which include the diaphragm with the piezoresistive materials, I am...
  32. Freddy Diaz

    How Can V-Tail Design Improve Stability and Control in Aileron-Less UAVs?

    Hi Physics Community, I'm working on the design of an aileron less and tail engine small UAV (Wing span 800mm) but I got stuck in Stability and Control. I recall from a teacher that a V-tail design is good for those configurations. However, I cannot find references to calculate/estimate neither...
  33. R

    Design, Manufacture and Machining of Carbon composites for RC planes

    Hi Guys Recently I have started a new hobby into RC planes. What I have noticed is extensive use of Carbon composites weight yet sturdy structures. Now the problem is that these structures seem to be cut (milling/drilling/laser cutting/water jet cutting) from a sheet (or laminates) of carbon...
  34. B

    How Can You Simplify Boolean Expressions Using Only NOR Gates?

    Homework Statement Hi everyone, i am currently struggling in my digital design and logic class that includes boolean simplifications and whatnot. I seem to understand how to simplify and am able to comprehend how the karnaugh maps work but what i do not understand is for example, on our...
  35. F

    Alt azimuth mount for heliostat design

    Hi Folks! I'm new here and need your help. I`m in the process of designing an alt azimuth mount for a Heliostat. For those of you who don't know a Heliostat is a mechanism that allows a mirror to rotate around the vertical axis(horizon) and horizontal axis(altitude). It is(usually) placed...
  36. James Koo

    How to Design a Wave Pool for Surfers: Tips and Considerations

    Homework Statement Recently my teacher gave us a homework on the designing of wave pool.The title is like below: You have been assigned as a consultant to design a water park at the abandoned pond site. The new water park should be able to produce conditions similar to the sea and also allow...
  37. B

    Relating variables: weight, gear ratio, power/torque to make design estimations

    hey all, I'm stumped so I thought I'd try posting here. I am in the early stages of design of a vehicle where we have a rough approximation of weight, no idea what gear ratios or power/torque to use yet, but have an acceleration requirement. I am trying to graphically model the relationship...
  38. S

    Wheel Alignment Design: Camber, Caster, & More

    Is there any formulae available for designing wheel alignment parameters like camber,caster,steering axis inclination and toe in and toe out.
  39. J

    Design the Most Stable Base for a Rectangle

    Hey guys, Im in the middle of a project and need help with the base for it. I have to develop a base for a rectangle 3 feet high by 2 feet wide by 6 inches deep. The front of the rectangle is 1 pound heavier than the back and will stand 2 feet off the ground. The base must be able to make the...
  40. D

    Design of a Gear Reducer for a Tractor

    Hello everyone, I am a junior Mechanical Engineering major tasked with the design of a gear reducer using spur gears. We haven't studied gears in-depth up to this point and I was wondering if anyone has suggestions regarding initial design considerations or a possible starting point. Any...
  41. S

    Hydraulic Design for 275 Ton Spillway Gate - Sigamana

    am currently designing a servo motors for a spillway gate for a dam , I have some doubts on how to determine the pushing force( the force needed to drop the spillway gate at a safe rate) for a piston carrying a heavy load of 275tons at a speed of 0.4447 m/min(this speed was pre-determined by me...
  42. U

    Mechanical Engineering Senior Design Project Ideas

    Hey guys, I am currently studying Mechanical Engineering in the UK. For my final year, we have to basically invent or design something that hasn't been invented before or improve something that's already been invented.Now unlike my cousin who's studying Aerospace Engineering in the US, he told...
  43. E

    Engineering Job Positions for US Engineering Job Market for VLSI Design Focus Grad

    I have no clue about the engineering job market as I'm in IT, he's looking for guidance. What kind of job positions would he be eligible for in US and which state(s) is the best for this field? I have attached the undergrad curriculum. He did his Masters with VLSI design focus. His Masters...
  44. enosis_

    Are you familiar with rocket mass heater design?

    Is anyone familiar with the so called rocket mass heaters - a popular DIY project? Has anyone ever studied design or uses?
  45. B

    How to Design an Airfoil for High Altitude Using XFLR5?

    Hey Everyone, so I have just started Aerodynamics and having completed a number of exercises I'm being asked to design an airfoil. I'm a bit outta my dept as I've transferred into this course from a diff field. 1. Homework Statement To design an airfoil, using the knowledge you've acquired in...
  46. S

    How to design a radiator to dissipate heat generated by a 39 KW rotary engine?

    No separate coolant is used, instead lubricating oil to be used for both lubrication and cooling of engine. How to calculate radiator size, coolant flow rate?
  47. P

    How to design home use wacky talky circuit on breadboard?

    I want to design a simple home use electronic wacky talky. Please help.
  48. K

    Airfoil design and optimization

    Friends, I want to know the methods involving the airfoil design and optimization. from initial step onwards...how to start my works.
  49. Dhillon123

    Designing a Partially Submerged Foundation: Insights and Solutions

    I am looking for some insight with a problem I have. I am trying to design a foundation that is partially under the current water table. It is a hollow rectangle that is 30 m long, 11 m wide and 9 m high with a wall thickness of 0.5 m, it is attached to a triangular shape foundation that is 35...
  50. IamDev

    Setup Design to rotate the work piece in DIE sinking EDM process?

    I need to design a basic setup to rotate the workpiece in Die Sinking EDM Process. I made some design but they were complicated and were not easy to fabricate so I need someone who can help me.
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