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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
1,027 232,437
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,356
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,585
Like a stretchable antenna structure, i have an arm in my project and i want that arm to expand on command so i was...
Aug29-13 03:35 PM
chemisttree
2 903
Hi all, I have started with my understanding of pressure vessels and i have some queries on the topic. 1) I...
Aug28-13 05:54 PM
AlephZero
3 1,925
Hey all, I'm not sure if this belonged in the physics or engineering forum, but here's the question: has quantum...
Aug26-13 05:54 PM
Simon Bridge
1 1,041
Im on the tech team doing an outdoor concert series. I have a dance show coming up this weekend and Im having a hard...
Aug26-13 05:03 PM
Travis_King
11 1,337
Dear all, I am a bit stuck trying to find out how heat is transfered through an evaporator in a refrigerator. I...
Aug26-13 01:03 PM
sanka
1 900
I'm current learning MatLab before i start my second year of engineering and i don't really understand a fundamental...
Aug26-13 10:54 AM
sanka
1 691
Often on high points of steam heated Shell&Tube heat exchangers etc. I've seen a vent specified to allow air and other...
Aug25-13 08:11 AM
rollingstein
2 1,122
Hi PF, I'm working on a problem for some guys and I need to add on to an existing machine. Attached is a back view of...
Aug23-13 01:14 PM
Legaldose
1 847
I want to make the input sound to go directly to the speaker without using any computer. Can you please help me?
Aug23-13 06:05 AM
mfb
6 1,373
Hello Everyone, I was wondering if anyone out there would know any kind of phase synchronisation techniques used...
Aug22-13 03:11 AM
Baluncore
9 1,249
I was just thinking: what if there's some kind of button which you press, and microphone, or something similar to...
Aug21-13 04:23 PM
Simon Bridge
14 1,872
Hello Experts Do all patents in the world really work? Can theories be patented ? I ask because i read a patent...
Aug21-13 02:25 PM
timthereaper
14 1,109
Good day! I don't know if they are called Structural design philosophy but, can anyone enumerate(if the list is...
Aug21-13 02:15 PM
timthereaper
1 1,040
Hi, I'm a junior in high school who is looking to focus on some type of engineering. I have researched a lot on the...
Aug21-13 01:34 PM
timthereaper
3 1,012
how is rifling done? I've read it's done by broaching,but rifling is helical
Aug21-13 07:39 AM
Baluncore
1 906
I have been thinking a lot about getting a remote car starter before winter. Any ideas on what I should get? Should...
Aug19-13 10:08 PM
mcknia07
0 766
I have to do this problem for my statics class and I don't really understand I will really appreciate, if someone can...
Aug17-13 04:50 PM
Greg Bernhardt
1 1,035
Iím currently working a project to produce a roadside speed camera which displays vehicle speed to drivers to improve...
Aug16-13 04:25 AM
Jack_O
8 1,490
I'm currently building a roughly 5m tall mallet for testing the strength of various pipes against impact force. I've...
Aug15-13 09:52 AM
Baluncore
2 1,044
This is a really dumb question that I have not found an answer for. I recently bought an erector set with a 3-6...
Aug15-13 03:47 AM
Bobbywhy
5 855
Hello Experts I have a question regarding high amperage going through strands of wires. For example, when...
Aug14-13 12:22 AM
Baluncore
11 928
Here's my problem: I have been using a digimatic indicator tool to measure the thickness of a somewhat uneven film....
Aug13-13 08:17 PM
Simon Bridge
1 980
anyone knows the difference between a snug tight and a fully tensioned bolt? thanks in advance:thumbs:
Aug13-13 07:46 PM
Simon Bridge
4 3,365
Hi there. I am designing a type cilindrical can full of a fluid, with a temperature difference between the top and...
Aug13-13 07:24 AM
c.teixeira
0 699
I am not an engineer which is why I have come to this forum. I am currently working on a project for my business. ...
Aug13-13 06:48 AM
Baluncore
1 713
You can read just bold, or all for further info. :D The COP for a single stage vapour compression refrigerator...
Aug13-13 04:52 AM
recreated
0 644
Hi everyone, I would like to know your opinion about telecommuting (working from home) As an engineer, what are...
Aug12-13 11:15 PM
Kin-tsurugi
0 573
Hey guys! Loving the site, I'm not much of a science guy by any means but really enjoy reading about all the...
Aug12-13 09:49 PM
impostar
0 597
Hello All, Let us say I want to set up a nice new town in middle of Australia (it is all desert), 500km from the...
Aug12-13 11:53 AM
SteamKing
2 771
When a hand spray painting gun is used to paint say metal tanks, about 80% of the paint is lost in the air. This...
Aug12-13 12:59 AM
Simon Bridge
6 829
Dear All, How important is the node numbering scheme for simple fem problems or is it important at all? It will...
Aug11-13 04:41 AM
SteamKing
3 1,363
So lately (meaning the past few years) I've been hearing a lot about graphene and how it's amazing. It's apparently...
Aug10-13 01:18 AM
Simon Bridge
3 813
If you have a cylinder with a slightly larger diameter at one end (the intake end) Would having one ducted fan powered...
Aug9-13 04:28 PM
Aero51
2 1,064
Hello All, I am in the process of creating a 33' tall chaotic pendulum, and cannot find any calculations for the...
Aug9-13 11:18 AM
mauchitoq
8 2,646
I have Windows 7 64 Bit and a USB TV Tuner Stick. I live in the State of Pennsylvania in the USA. I was going to...
Aug7-13 01:05 PM
biferi
0 787
i was wondering about this, because I learned that those vests don't protect against knives.
Aug6-13 07:54 AM
phinds
1 1,085
This is not a homework question but a simple equation I want to make clear. If temperature of gas on one side of a...
Aug6-13 03:58 AM
recreated
5 737
Hi guys, So I'm starting to learn about magnetic fields and electrics fields, one of the equations we use...
Aug5-13 10:08 PM
Simon Bridge
15 1,993
Hi, im facing some problem can i just downsize the motor that drive the fan as currently the fan is operated at...
Aug5-13 10:25 AM
mark.watson
3 1,189
Hi, I was wondering if anyone knew where I could buy a pressure vessel that meets the following specifications: ...
Aug4-13 11:10 PM
SteamKing
1 808

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