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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
1,027 230,935
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
Redbelly98
0 2,265
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
rneale
38 60,229
Hey there, I was just wondering if its actually possible to configure a RAM Pump to deliver up to a height of 300m...
Apr24-13 02:16 PM
CraigAllan
4 1,590
Greetings PFers, I'm trying to find the most efficient way to pack the lawn clippings after mowing my lawn. I need...
Apr23-13 07:34 PM
Danger
5 1,197
Hi, I am a sophomore mechanical engineering student looking for an internship to get some real life experience. I...
Apr23-13 03:12 PM
S_Happens
8 1,416
Hi ! I'm trying to calculate a conductance for free molecular flow of a tube which is closed by a disc. The distance...
Apr23-13 07:32 AM
vst98
0 1,364
Hey all, first post! Looking to find a deflection equation for a simply supported overhanging beam with two...
Apr22-13 09:28 PM
jhae2.718
3 1,453
16. As part of a heat-treating process, an alloy-steel billet, initially at 1032F, is cooled in a 32F air stream. ...
Apr22-13 02:01 AM
NascentOxygen
1 1,646
what is the cheapest and low power diesel engine available at present? i am seeking 3 KW engine with of minimum weight...
Apr21-13 04:17 PM
2milehi
4 1,398
hi, i assume this would be a structural engineer or an architect. i assume that an architect would have to have...
Apr21-13 10:04 AM
russ_watters
3 897
Hi all, I've heard people try to estimate the carbon footprint from the production of cars based on the cost of...
Apr20-13 08:58 PM
Simon Bridge
1 1,242
If an accelerometer reads +1 g when it is at rest and facing upwards, must I subtract 1 g from each reading when it...
Apr19-13 01:02 PM
sonictext
0 805
It needs to perform at least 50 cycles with a cumulative error of no more than 30 minutes. This is for a home...
Apr19-13 10:56 AM
Travis_King
3 715
Hi, I was wanting to insert 1 inch foam balls inside a container of ferrofluid, causing the foam ball to float. ...
Apr18-13 10:26 PM
Simon Bridge
3 1,064
Hi, Ive been thinking about ferroufluid and its application and whether anybody would be able to answer my questions....
Apr18-13 09:51 PM
Simon Bridge
1 977
Hi, I would like to calculate a bending energy of a circular rod. It should be elastic bending. The rod/circular...
Apr17-13 10:53 AM
cake of doom
15 1,086
Hi I am a second year electrical and electronic engineering student and I have been planning to do a year in...
Apr16-13 08:44 AM
CraigH
0 790
I know that incandescent bulbs are filled with some inert gas to reduce the rate at which the filament decays. If the...
Apr15-13 12:08 PM
Danger
6 1,352
I saw those giant wind turbines stopped working in winter, since winter has most wind in four seasons. so, what good...
Apr14-13 04:52 PM
Danger
18 2,031
I've got a problem with calculating (estimating) how much heat is flowing out of a metal bar in the following system;...
Apr14-13 08:51 AM
Yuri B.
1 1,232
I want to know approximately how compressible a fluid can become when H2O bubbles are present. Does anyone know how...
Apr13-13 01:09 AM
bzz77
6 1,139
Does anyone know what the common technical name for the attached image of a spring loaded pin? I am pretty sure it is...
Apr13-13 12:07 AM
pantaz
1 1,715
Hello, I am having difficulty in calculating F and was wondering if anyone could help. F is the heat flux in W/m2...
Apr12-13 01:08 AM
Simon Bridge
1 1,051
I'm interested in studying engineering (specifically electronics and software). I enjoy designing and creating a...
Apr11-13 11:26 PM
tade
26 3,329
I have a conveyor that travels radially. I need to calculate the HP needed to move it. It works on a concrete slab....
Apr11-13 09:59 PM
Simon Bridge
9 1,241
How can I determine the thermal conductivity of two different aerial coolers' tubes, taking into account the ambient...
Apr11-13 03:54 PM
a.m.d
0 1,071
This is for a anechoic chamber for testing the exhaust noise from a particular engine, it will just be an engine test...
Apr9-13 12:37 PM
Danger
5 1,247
What is the physical meaning of sensitivity and complimentary sensitivity in a sytem?
Apr9-13 11:42 AM
vvl92
0 1,040
Can someone please help me. I have a pipe 200mmOD x 160mmID welded to a Steel structure The pipe is 100mm long...
Apr9-13 12:58 AM
SteamKing
1 1,008
Hi i am doing a side project of displaying RPM speed on the Altera development board DE0 which i have running at...
Apr8-13 11:16 AM
Sparkypedia
1 747
I want to know how the artificial intelligent become integrated or can improve more automation systems and machine...
Apr7-13 03:34 AM
iii
0 881
When we watch 3-D films in the cinema, some objects appear to protrude, others recess. How would a technician control...
Apr6-13 08:36 PM
tade
17 1,908
hi i am putting together a practical training for the infrastructure industry in the rebuild of earthquake torn...
Apr6-13 06:04 PM
kingsley79
0 758
As im well aware you CAN'T connect inverters in parallel due to the Frequency's and wave forms not matching BUT. What...
Apr6-13 05:33 PM
RocketSci5KN
4 749
I have a 4-stroke,4 cylinder, 2.0- litre engine at a speed of 2850 rpm, the engine works in stoichiometric conditions...
Apr6-13 03:25 PM
AndreasSpy
0 854
Hi I have a project in mind and I'd like some help starting it up. Project: I want to create Twisted Fate's Pick a...
Apr6-13 12:43 PM
Equilibrium
3 956
Hello, I am interested in the boundary condition effects on a converging-diverging nozzle. If you have a...
Apr5-13 04:21 PM
boneh3ad
1 1,447
Hello, First time poster here! I am hoping someone here may be able to share some insight on my problem. I am a...
Apr5-13 10:49 AM
dingelde
0 750
http://img715.imageshack.us/img715/2498/11489662.jpg The pressure will push component "a" to move downwards and...
Apr5-13 06:19 AM
CFDFEAGURU
8 1,110
What is meant by "high gain control is desirable in that it increases bandwidth"?
Apr4-13 05:13 PM
vvl92
0 649
Friction is phenomenon we try to avoid but it may be useful. Does anyone know about existing friction heat generators...
Apr4-13 12:14 PM
Jobrag
21 2,325
hi,, i m a bit confused in XNOR gate logic for MORE THAN 2 INPUTS.. is this logic correct "even function of 0's".....
Apr4-13 10:19 AM
fcbarcelona
3 727

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