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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
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
1,027 220,940
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 1,527
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 57,292
Hello, I was in a discussion with a Friend regarding cooling systems for computers. We were discussing different...
T 08:19 AM
DHF
3 4
Hello. I am new to engineering and to imperial units, and currently learning by doing some exercises. I'm stuck on the...
T 01:48 AM
kburgess
6 481
Hi, I'm working on a project that would take a 3d image using stereocopic camera and would record the depth and the 2d...
Y 05:35 PM
Baluncore
5 944
I am performing Modal analysis on a fairly simple structure (a square aluminum rod with some pillars attached to the...
Y 03:42 PM
AlephZero
2 98
Hi there, I have been in contact with a manufacturer as I require both a pitot tube and a differential pressure...
Jul20-14 11:54 PM
jedishrfu
1 152
Trying to evaluate airflow around a vehicle and behind it to calculate where an object would rest after leaving driver...
Jul16-14 06:00 AM
B0b-A
2 1,008
i want to move a wheel of vehical in new test rig... i just knw tyre dia. 1.2 m .. load for perticular wheel is 8000...
Jul15-14 05:27 AM
dean barry
13 1,779
Attached is a picture of a stiffener bead on a metal link, my question is how does this shape help stiffen the part?...
Jul12-14 10:14 AM
xxChrisxx
5 1,133
Is it possible that I keep the typical working torque but increase the rpm by raising my voltage to my motor? I...
Jul12-14 07:24 AM
tygerdawg
3 1,086
Hello, Accidentally I have noticed a strange behaviour using two different magnets, which I would like to discuss....
Jul12-14 02:38 AM
SteamKing
5 1,227
In bowling, the ball will have a heavy spot marked as the center of gravity (cg). This will have an additional 1oz to...
Jul11-14 02:40 PM
Baluncore
5 1,192
OK. Hopefully you guys can help me. I could do this off of just trial and error, but I would rather not have to re-cut...
Jul11-14 01:30 AM
elegysix
1 939
Hi All, I have a problem I've been thinking about for a while, but I haven't come up with a really satisfactory...
Jul10-14 10:16 PM
olivermsun
6 1,095
I could use some guidance as to how I would analyse the stresses in a ring girder similar to the one shown in the...
Jul10-14 01:20 PM
SteamKing
4 1,065
We are working on an electronic solar hot water heater. We had it working but decided to change the way the...
Jul9-14 12:14 PM
frazelle09
12 1,709
The one in question: https://www.youtube.com/watch?v=0T2uYgreTR0 Hello, I currently have to build a timer for my...
Jul8-14 09:43 PM
elegysix
1 943
I have a closed 4" diameter cylindrical vessel with Volume=400in^3 filled with air at room temperature. A 3500W...
Jul8-14 02:21 PM
anolan23
24 2,899
Hello PF I want to dissolve a gas in a liquid. I figured I could create a closed loop vacuum system. I introduce...
Jul7-14 09:33 PM
SteamKing
5 1,190
Edit: I've realized that it's not called a 'jacketed pipe', but simply a double pipe heat exchanger. Apologies,...
Jul7-14 06:04 AM
Baluncore
1 950
I was thinking what is the cost efficient and energy efficient way for the new future homes to be. Since alternative...
Jul6-14 02:55 PM
AlephZero
24 3,918
Hi all, Yet another noob question from me... I been thinking of Solarthermal desalination plant lately but i'm...
Jul5-14 10:11 AM
willdo
11 2,521
If you put laundry detergent or detergent for hand wiashing dishes into a dishwasher, you may get suds leaking out the...
Jul5-14 06:13 AM
Borek
2 1,490
Hello, I wish to begin by stating I appreciate all feedback and the time taken to answer my inquiry. I have read...
Jul3-14 08:40 PM
blainiac
18 3,062
Hi there, I have been thinking about attempting to quantify the statement that: "Gasification is more efficient...
Jul3-14 09:21 AM
maajdl
3 1,169
So, plenty of us have probably heard about the recent hot car death that will probably become a hugely controversial...
Jul3-14 04:12 AM
Qluq
10 1,514
The principals of SONAR is that transmitter sends a sound signal which bounces backwards from the object to receiver....
Jul2-14 05:38 PM
Baluncore
6 1,576
Okay, say we have an electric fan that is used as a compressor, and behind that is the main burner, and behind that is...
Jul2-14 01:48 AM
CCatalyst
1 1,280
Hello. Is electrostatic precipitation technology relevant nowadays? Is it worth making candidate dissertation on it? ...
Jul1-14 08:43 AM
Greg Bernhardt
1 1,197
Hello all! I have recently started a Parts Cleaning Machine manufacturing business. Most of my clients are...
Jul1-14 08:43 AM
Greg Bernhardt
1 1,424
So supposedly if you leave your phone plugged into a charger but the charger is not pluged into anything then it will...
Jun29-14 07:17 PM
berkeman
3 1,679
Given an unknown fluid, what would be an efficient and/or cheap way of finding it's crystallization pressure through...
Jun29-14 09:43 AM
Lok
5 1,497
hello this is the first time I'm using this forum so I hope that my post is in the right sub-forum I'm working now...
Jun29-14 01:59 AM
rawan
6 1,917
Hello all, I use an evaporation chamber at my lab every day. Basically, put some substance in the chamber, close...
Jun27-14 12:31 AM
warfreak131
3 1,264
So this is my first post to PF, but I've been a long time reader. I graduated with a civil engineering degree a year...
Jun26-14 06:35 PM
mfb
3 1,367
Need some help reading these dimensions, they're from a draft made in catia v5
Jun26-14 01:02 PM
tygerdawg
1 1,207
On many boiler feed-water systems there are deaerators which essentially sparge steam through the water. Why does...
Jun26-14 09:51 AM
SteamKing
1 1,257
I'm building a 6'x12' steel platform that will be 3' elevated from the ground. How can I determine what load bearing...
Jun26-14 09:49 AM
nvn
4 1,300
I have an airtight container, the "hot-box", filled with air from outside. I close the two valves to the outside air,...
Jun25-14 01:20 PM
Glurth
77 7,363
What are the possibilities of creating small sonic boom(s) from commercial or consumer grade motors/centrifuges/fans...
Jun24-14 08:12 PM
boneh3ad
2 1,260
Hey Everyone, I have been doing some research into renewable/sustainable energy sources recently and there isn't a...
Jun23-14 11:21 PM
gloriasakins
5 1,669

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