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- The design, building, and use of engines, machines, and structures. For any engineering topics not applicable to the categories below.
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Jan16-12 Greg Bernhardt
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,433
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,313
We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of...
Jun23-14 12:38 AM
OmCheeto
1,027 231,792
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 01:00 PM
stewartcs
9 2,800
I have a stainless steel shaft that is 140mm x 936mm long. I need to calculate what the maximum torque is that I...
Aug5-09 08:12 AM
pegghead
16 20,600
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 10:47 AM
Bob S
2 3,114
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 05:08 PM
Redbelly98
12 7,359
http://www.cnn.com/2009/TECH/science/06/16/high-altitude.wind.power/index.html Basically two designs, one a...
Aug7-09 12:55 PM
Topher925
5 1,918
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 02:26 PM
Integral
2 13,337
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 06:38 PM
gloo
5 3,927
can someone tell me the exact definition of kinematic pairs?and kinematic chain? which is the one where relative...
Aug9-09 01:50 PM
tiny-tim
1 3,223
Hi! I want to calculate the deflection of a circular membrane driven by a piezoelectic disk set on the top of the...
Aug10-09 03:27 AM
frenchero
0 3,991
A few days ago, I was reading an article on wikipedia about how musical synthesizers work and I read that initially...
Aug10-09 12:59 PM
cheae
5 5,932
I am struggling to understand the calculation on the attached .pdf. 1) In the inertia section, I think the 2.55E-4...
Aug11-09 12:09 PM
mselak500
0 1,414
Hi! I am wondering if anyone here knows of a generic heat engine simulator. I.e. something that can simulate the...
Aug11-09 01:52 PM
xxChrisxx
1 3,315
Please give me the equation with a link if possible for determining power for a compressor. I know volume x pressure...
Aug13-09 09:15 AM
ank_gl
7 40,196
I am wondering what you guys think the future of NASA is going to be, what changes do you think the Augustine...
Aug15-09 10:32 AM
JD88
2 1,473
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 01:59 PM
Royale
9 2,529
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 10:03 AM
minger
8 4,153
Hi guys, I'm working on a prototype for a lamp and have quickly overreached my meagre school boy mechanics skills,...
Aug17-09 02:21 PM
Whymars
29 6,729
I recently had an idea which is revolutionary to car travel. I would like to actually produce a prototype and gain...
Aug18-09 01:16 AM
Danger
10 5,076
Not really sure if this is the place for this, but can overhead tranmission lines be located via sattelite imagery?
Aug18-09 08:58 AM
mgb_phys
6 2,338
Here is the situation: We are building a small model car (roughly 8 in wide by 18 in long) whereby hydrogen is...
Aug19-09 07:01 AM
Q_Goest
5 1,688
I am curious. Maybe I don't understand something, but many articles I come across perform an energy balance on a solid...
Aug20-09 07:48 PM
russ_watters
5 6,817
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 10:48 AM
TVP45
3 1,609
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 11:16 AM
Danger
1 1,233
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 04:31 PM
Danger
9 3,532
Hi everyone. I'm having a little trouble using this otherwise excellent software. My system is a dual core 2.14GHz...
Aug24-09 06:33 AM
Allucard
2 2,518
I know someone who, on very hot (25+ C) days, runs her car air conditioner until the car becomes comfortably cool,...
Aug25-09 03:43 AM
Ranger Mike
39 24,363
I m pursuing electronics engineering now m in third year...i just want to know which universities in US provide...
Aug25-09 03:34 PM
neeti.gemini
0 3,714
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 09:33 PM
Danger
35 4,160
I am trying to determine how long a particular battery will last for my application. These numbers are just for an...
Aug27-09 12:03 PM
flatmaster
5 8,526
Hey guys! Was wondering if someone could help me out. I'm doing a thermodynamics topic and have an issue explaining...
Aug27-09 12:21 PM
Q_Goest
8 4,232
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 12:36 AM
Uniquark
9 7,278
i got non linear coupled 3d(3 space+time)pde(mass + heat transfer) can any one give me code in matlab
Aug29-09 09:42 AM
punamm
0 1,455
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 03:58 PM
Equate
6 1,455
I am working on a project that requires 4 ducted fans, each producing approximately 40 N of thrust for approximately...
Aug30-09 06:32 PM
FredGarvin
13 11,291
Dear Sirs; I have an engine design project that I am working on. Once I have calculated the mass of the moving...
Aug31-09 04:55 AM
brewnog
10 1,580
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 12:30 PM
nvn
3 6,454
Hi, I'm currently working with a MSP430F417x micro controller development kit. I need to drive the microcontroller...
Sep2-09 09:19 AM
Topher925
1 2,446
Hello, all. Can someone please direct me to a good source of information which explains how the threaded fasteners in...
Sep2-09 03:34 PM
PhanthomJay
2 11,295
Is it possible for me to heat water with some type of system that can use the heat trapped in my ceiling cavity? If so...
Sep3-09 11:25 AM
Artman
7 5,742
Hi there I'm Matt and I am a geek. I love the RPG scene and intend on going to an event held in Derby but, for...
Sep3-09 04:36 PM
0xDEADBEEF
6 2,422

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