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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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We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of...
Mar17-14 06:22 PM
982 196,915
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
38 50,363
In response to the growing needs of our membership, we're excited to announce the restructuring our Science Education...
Oct12-05 01:47 AM
0 20,381
I was wondering if anyone could please explain what an intensity diagram would look like if you had a layer of fresh...
May8-09 07:15 AM
3 7,836
Okay, so I'm not really in High School (second year of college), but this is still a High School level problem....
Feb28-11 02:53 PM
4 7,824
It's been a while since I've had to do these calculations.. I'm looking for the flow rate at the wall of a 3.175 mm...
Sep3-10 10:12 AM
1 7,820
Does anyone have any advice on civil engineering as a career? What are the good/bad sides of the profession? Any...
Sep16-09 09:30 AM
20 7,815
For our balsa wood bridge, 1/8 in square, would a bridge that crosses catilever and arch styles together work well?...
Mar10-05 10:44 AM
2 7,815
Hi, I am in the process of designing a bunkbed for a caravan as my 2nd year mech eng design project. I have come...
Nov13-06 03:26 PM
3 7,814
I'm considering building a little solar-powered garage ventilation system. My garage faces SSW and gets very hot on a...
Jun1-08 01:37 PM
B. Elliott
7 7,810
Is it plausible to use the buoyancy of air in a controlled column of water to turn a drive shaft and, by extension,...
Dec19-06 10:21 AM
13 7,809
I thought today would be a good time to give NASA some thanks for all the Spinoffs That Rock!, being it's the last...
Jul10-11 09:52 PM
16 7,805
Hi there, I plan to build a ROV, and am currently looking at different methods of propulsion. I do not wish to use...
Aug11-10 02:17 AM
ROV freek
9 7,795
Basic electricity is often explained using the so called water/electricity analogy. This works, but I've never...
Sep29-10 06:37 PM
17 7,771
Hi all, I am currently doing an engineering internship (still an undergrad), my field is electrical engineering so...
Sep25-11 07:46 PM
4 7,757
I am trying to design and build a small scale desktop water tunnel so I can observe the fluid dynamics of airplane...
Sep1-10 11:19 AM
13 7,754
Hi, I am a PhD student in math and in my current research I'm faced with the problem of analyzing the rigidity of a...
Oct22-09 10:07 AM
35 7,750
Imagine a pipe of d=50mm with water flowing through. The pipe's diameter is reduced along a small section to 40, and...
May12-07 11:47 AM
Mech. Engineer
1 7,744
Hello, I harvest lake weeds and I'm looking for an easier way to remove the aquatic weeds from the water after they...
Apr25-08 08:44 PM
40 7,744
I believe that when refrigerant in an air-conditioner's evaporator boils into gas, the pressure on the refrigerant...
Feb1-11 03:47 PM
15 7,688
Hi, I'm trying to work out how to calculate the forces acting on a vessel containing a vacuum. The vessel is not...
Apr12-08 05:43 PM
4 7,684
A pulse jet has only one moving part. Nice. But what if it didn't need any moving parts? Stupid idea, right? Check...
Jul13-10 08:42 AM
15 7,676
Could not find a thread on this particular topic, but I want to verify my thoughts. I emailed my local Green Party...
Jan30-07 06:08 PM
14 7,674
How do I calculate a deflection under a point load?
Nov6-06 05:48 PM
2 7,664
Newly devised automobile batteries are sealed. When lead storage batteries discharge, they produce hydrogen. Do you...
Feb25-05 09:39 PM
0 7,651
Hello all, I am a physics major working on my mechanical eng. minor. This is not homework. This is a real design. I...
Jun29-09 01:40 PM
3 7,642
Hello! I was looking for literature on working and details of "Organ pipes". Theory of how they work would help a...
Sep6-06 04:40 PM
2 7,591
Hi guys, Im doing a group project on a conversion of a small motorcycle engine(suzuki dr125s) so that it can run on...
Dec2-07 04:25 PM
1 7,589
Hello i am trying to convert the strain gauge readings i took in a lab from an I beam that was subjected to torsion. ...
Mar3-10 06:32 PM
0 7,584
Ok, read the solar tower stuff in a couple threads here, and the complexity of pumping water to great heights in terms...
Mar16-04 09:09 AM
4 7,581
I'm not sure the formula to use to calculate the deflection of a beam. Here's the information I have got. Steel...
Jan9-05 12:06 PM
8 7,574
I´ve found a webpage where the following problem is solved in detail, together with the substitution of numerical...
Sep11-08 11:48 AM
2 7,569
Hey I've been wondering for a while about radar. I believe it works by bouncing a radio signal off an object and...
Mar15-07 03:40 PM
2 7,559
We have this book as a text for oour Mechanics of Solids Course. I have solved many sums from the book but i dont have...
Sep22-08 12:41 PM
4 7,556
i might have already posted this i forgot basically one day i was why cant we get more energy from a motor by using...
Nov6-07 11:19 PM
10 7,549
Here’s a list of Hydro Electric and Power Plant companies that are public, please feel free to add to the list: ...
Feb4-11 03:28 AM
jonathan cole
0 7,542
Could say a three rotor wankel engine run efficiently on steam? If heat heat loss was kept to a minimum may be by...
Jul27-06 04:57 PM
5 7,538
For an experiment we are doing, we need to be able to accurately detect people inside a car moving at high speed. Any...
Mar18-10 01:45 PM
dr dodge
24 7,535
I got this from a friend over the this design practical or just some virtual design?
Aug21-11 06:08 PM
17 7,502
Hi, we are running experiments with solar power; any inputs on below problem are highly appreciated. TNX Robby ...
Jun26-11 12:42 AM
14 7,458
I'm trying to understand the physics behind the rake and trail of the steering geometry on a bike. I would greatly...
Feb27-08 01:54 PM
1 7,439
Before you start going through equations and trying to solve this I just need a simple question answered about this...
Jan25-05 10:31 AM
3 7,430
Hi! I'm not sure if this is the right forum for this, but here goes. I'm in the process of developing a board...
Oct22-05 08:55 PM
0 7,417

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