# General Engineering

- The design, building, and use of engines, machines, and structures. For any engineering topics not applicable to the categories below.
 Views: 584 Announcement: End of year contest, $75+$50 prize! Dec18-13 Meta Thread / Thread Starter Last Post Replies Views In response to the growing needs of our membership, we're excited to announce the restructuring our Science Education... Oct12-05 02:47 AM Moonbear 0 19,406 Pinned: Sources of Information on Engineering ( 1 2 3) A number of questions, particularly involving homework, often involve some basic engineering. In the US, the... Nov22-13 03:02 PM rneale 38 48,321 Pinned: YOU!: Fix the US Energy Crisis ( 1 2 3 ... Last) We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of... Nov30-13 02:24 PM Astronuc 944 186,224 I am a freshman in college and I'm currently considering all of my options for a major. I love math and science,... Aug4-09 07:57 AM AppleBite 2 1,121 Hi From this post you will deduce that one of my hobbies is sailing, I believe that applying a bit of science to... Aug4-09 10:07 AM Redbelly98 4 6,570 Im not sure how to analyze this. I have a 8ft dia. pipe casing that im submerging into the mud in 10 ft of water. ... Aug4-09 02:00 PM stewartcs 9 2,398 I have a stainless steel shaft that is Ø140mm x 936mm long. I need to calculate what the maximum torque is that I... Aug5-09 09:12 AM pegghead 16 19,303 Just a quick question for you guys out there. I have an AC/DC laptop power supply. I was thinking of using it for a... Aug5-09 11:47 AM Bob S 2 2,900 I'm currently building a device that will blow a ping pong ball vertically up a tube but don't know what fan I am... Aug5-09 06:08 PM Redbelly98 12 6,945 http://www.cnn.com/2009/TECH/science/06/16/high-altitude.wind.power/index.html Basically two designs, one a... Aug7-09 01:55 PM Topher925 5 1,758 Can you please tell me whether you think this magnet motor will work or not? If not then what is the reason why not.... Aug8-09 03:26 PM Integral 2 12,847 Is it a huge daunting engineering task to create a very large dynamic o ring water seal (sliding up and down a shaft... Aug8-09 07:38 PM gloo 5 3,668 can someone tell me the exact definition of kinematic pairs?and kinematic chain? which is the one where relative... Aug9-09 02:50 PM tiny-tim 1 3,026 Hi! I want to calculate the deflection of a circular membrane driven by a piezoelectic disk set on the top of the... Aug10-09 04:27 AM frenchero 0 3,747 A few days ago, I was reading an article on wikipedia about how musical synthesizers work and I read that initially... Aug10-09 01:59 PM cheae 5 5,608 I am struggling to understand the calculation on the attached .pdf. 1) In the inertia section, I think the 2.55E-4... Aug11-09 01:09 PM mselak500 0 1,316 Hi! I am wondering if anyone here knows of a generic heat engine simulator. I.e. something that can simulate the... Aug11-09 02:52 PM xxChrisxx 1 3,149 Please give me the equation with a link if possible for determining power for a compressor. I know volume x pressure... Aug13-09 10:15 AM ank_gl 7 38,042 I am wondering what you guys think the future of NASA is going to be, what changes do you think the Augustine... Aug15-09 11:32 AM JD88 2 1,410 Hello all, I hope you all are fine. That’s is my first post My Questions are 1. which is first discovered or... Aug15-09 02:59 PM Royale 9 2,275 Maybe im still too young to say im tired of working a regular 9-5 job, but i feel like its doing nothing for me. I am... Aug17-09 11:03 AM minger 8 3,821 Hi guys, I'm working on a prototype for a lamp and have quickly overreached my meagre school boy mechanics skills,... Aug17-09 03:21 PM Whymars 29 6,094 I recently had an idea which is revolutionary to car travel. I would like to actually produce a prototype and gain... Aug18-09 02:16 AM Danger 10 4,705 Not really sure if this is the place for this, but can overhead tranmission lines be located via sattelite imagery? Aug18-09 09:58 AM mgb_phys 6 2,008 Here is the situation: We are building a small model car (roughly 8 in wide by 18 in long) whereby hydrogen is... Aug19-09 08:01 AM Q_Goest 5 1,580 I am curious. Maybe I don't understand something, but many articles I come across perform an energy balance on a solid... Aug20-09 08:48 PM russ_watters 5 6,442 i am planning to build pressurized set-up (up to 70 bar) but I have no clue how to start it. Any advice on reading... Aug21-09 11:48 AM TVP45 3 1,471 Help Required On Home Project Hi Everyone, Im new to the forum, & I am hoping you maybe be able to help/guide me... Aug22-09 12:16 PM Danger 1 1,167 If I had a 4X4 car and wished to raise it up to increase ground clearance by 10 feet, (looking something like a travel... Aug23-09 05:31 PM Danger 9 2,634 Hi everyone. I'm having a little trouble using this otherwise excellent software. My system is a dual core 2.14GHz... Aug24-09 07:33 AM Allucard 2 2,375 I know someone who, on very hot (25+ C) days, runs her car air conditioner until the car becomes comfortably cool,... Aug25-09 04:43 AM Ranger Mike 39 22,938 I m pursuing electronics engineering now m in third year...i just want to know which universities in US provide... Aug25-09 04:34 PM neeti.gemini 0 3,514 Well, it's not life-or-death but, I've got a deadline for tomorrow to finish this thing I've been working on for... Aug25-09 10:33 PM Danger 35 3,619 I am trying to determine how long a particular battery will last for my application. These numbers are just for an... Aug27-09 01:03 PM flatmaster 5 7,226 Hey guys! Was wondering if someone could help me out. I'm doing a thermodynamics topic and have an issue explaining... Aug27-09 01:21 PM Q_Goest 8 3,699 I want to build a pump system using the water pressure from a 36 inch deep pond (up to 96" weather permitting) to pump... Aug29-09 01:36 AM Uniquark 9 6,398 i got non linear coupled 3d(3 space+time)pde(mass + heat transfer) can any one give me code in matlab Aug29-09 10:42 AM punamm 0 1,362 A steam powered car just set a new world record of 139mph, beating a 101 year old record of 126mph. With this level... Aug30-09 04:58 PM Equate 6 1,340 I am working on a project that requires 4 ducted fans, each producing approximately 40 N of thrust for approximately... Aug30-09 07:32 PM FredGarvin 13 10,581 Dear Sirs; I have an engine design project that I am working on. Once I have calculated the mass of the moving... Aug31-09 05:55 AM brewnog 10 1,436 Hi , I need to find out the forces and bending moments on, put simply a table. 4 stands are welded to a flat plate... Aug31-09 01:30 PM nvn 3 6,211 Hi, I'm currently working with a MSP430F417x micro controller development kit. I need to drive the microcontroller... Sep2-09 10:19 AM Topher925 1 2,300 Hello, all. Can someone please direct me to a good source of information which explains how the threaded fasteners in... Sep2-09 04:34 PM PhanthomJay 2 9,950