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General Engineering

- 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
1,027 232,635
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,368
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,635
Which are more efficient, Rocket Engines or Jet engines, and why? It would make sense that rocket engines are more...
Y 11:18 PM
russ_watters
3 85
I have a pretty specific problem that I'm trying to solve and I'm out of ideas. I can't divulge too many details, so...
Y 07:24 PM
thankz
6 98
Hello all new to the forums but I have a question. I need to find out the force that holds two pressed objects...
Y 12:33 PM
256bits
3 159
I am trying to understand my superchargers isentropic chart. For an example case where a supercharger outputs 10m3/hr...
Y 05:46 AM
Baluncore
1 168
Many linear flourescent lightbulb fixtures that I see have this series of transversal fins, such as in this picture:...
Y 12:32 AM
Nantes
11 505
Whom might be talking on this area?
Jul30-14 10:44 PM
Bobbywhy
1 116
Hey everyone, I have a fluid system of water coming from a pressure source. Then there is a converging nozzle,...
Jul30-14 03:19 PM
npc214
1 107
Looks like it is time for round two... So for any of you who were following my other post...
Jul30-14 10:28 AM
duhuhu
6 255
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Hi. I am trying to calculate the 'kicking out' force created when an object topples over. Attached is a picture of...
Jul30-14 01:55 AM
derryck1234
2 303
Hello, I am choosing glasses for a novel solar cell design, and part of the criteria is if the glass will be able...
Jul29-14 11:02 AM
Bandit127
2 317
I know that there is the equation to capture work of falling water using dams (power= head*flow*gravity...
Jul28-14 10:03 PM
gloo
11 407
I am performing Modal analysis on a fairly simple structure (a square aluminum rod with some pillars attached to the...
Jul28-14 01:55 PM
duhuhu
15 959
Hey! I am building a small scale wave energy converter for testing in a wave tank. I have my device almost ready,...
Jul28-14 10:14 AM
olivermsun
1 269
The proton current in cyclotron are normally measured by Faraday Cup. However, I do not understand that if there is...
Jul27-14 07:42 AM
mfb
8 493
Hello all, new member and amateur engineer from Tucson, AZ. I am working on a homebuilt, part 103 legal, ultralight...
Jul27-14 03:47 AM
DUMMY
9 9,402
Hello Everyone, I have several questions regarding the deflection of a free-standing pipe wherein Force is applied...
Jul27-14 03:27 AM
SteamKing
6 454
Over a decade back there was a company that sold air cooling devices for cruising sailboats. A sailboat at anchor is...
Jul26-14 01:21 PM
jim hardy
2 523
Suppose we want to take a picture of a highway at night, see attachments. As far as i understood, whether image is...
Jul26-14 11:21 AM
russ_watters
1 374
I recently started programming a basic web based app. that calculates the forces within a standard wood truss. I...
Jul26-14 06:11 AM
medeek
15 5,743
Hello I am a Junior Structural engineer and need to know how St Venant's torsion constant is calculated. It appears...
Jul25-14 07:39 PM
henneh
3 388
I was wondering how I would go about working out the energy required to cut a material (e.g. stone or steel) if given...
Jul24-14 09:02 AM
Simon Bridge
6 555
I'm having a bit of difficulty conceptually understanding a problem. Hoping someone here can clear it up for me. In a...
Jul23-14 07:35 PM
sanka
0 431
Hello, I was in a discussion with a Friend regarding cooling systems for computers. We were discussing different...
Jul23-14 07:10 PM
sanka
6 672
An operation, that in my opinion, is a once in a lifetime event. A few links that might be of interest to anyone not...
Jul23-14 06:54 AM
Borg
18 4,207
Hello. I am new to engineering and to imperial units, and currently learning by doing some exercises. I'm stuck on the...
Jul22-14 01:48 AM
kburgess
6 1,261
Hi, I'm working on a project that would take a 3d image using stereocopic camera and would record the depth and the 2d...
Jul21-14 05:35 PM
Baluncore
5 2,205
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
1 671
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 1,851
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 2,933
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 1,913
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 1,811
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 2,028
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 1,982
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 1,667
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 1,887
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 1,776
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 2,630
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 1,760
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 4,869

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