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Mechanical Engineering

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Development of aircraft and space vehicles. Propulsion, Aircraft Structures, Crafts, Atmosphere
T 01:29 AM beamthegreat 
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Gear heads unite to discuss Vehicle Dynamics, Safety Engineering, Performance, NVH, Ergonomics, Durability...
Y 05:26 PM edward 
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Jan16-12 Greg Bernhardt
Hi everyone, Maybe this resource is new for someone. It's a collection of videos made in the 60's by the very best...
Mar6-13 10:50 AM
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Dear all, I checked job numbers on indeed Canada, and when using Pro/ENGINEER and solidworks as search words, I got...
Aug4-14 01:56 PM
26 35,225
Let's say that I have a stirling motor designed in such a way that the cold reservoir is always at standard...
Aug14-06 08:48 AM
1 1,355
A plastic ball is inflated enough to produce tangential stresses. Stress X = Stress Y = 2000Kpa The radial thickness...
Jan1-12 05:39 AM
2 955
The Fink truss is my model. In analyzing this structure, autodesk doesn't give me the desired result. Look at point F,...
Sep12-13 06:02 AM
2 783
Hi Folks; I am facing a problem with a real experimental pumping case. I am running a schedule 40, commercial...
Oct27-11 11:08 AM
11 1,375
In this post to sci.astro I suggested a method for air-breathing propulsion to orbit: From: Robert Clark Date:...
Jun28-06 11:34 AM
15 2,422
To reach orbit you have to have your vehicle have a horizontal, i.e., tangential, orbital velocity, of about 7,800 m/s...
Jun18-10 12:25 PM
1 1,812
Hello Dears! I've just registered here. It sounds nice! :smile: As I've seen in different solution manuals here in...
Nov28-10 08:42 PM
4 1,364
I am making a functional model friction crane. I am in the design and material gathering phase right now, but I have a...
Feb18-12 09:15 PM
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Hi every body.. Say you trapped the drag tube before a fan, what would happen then? Will the Amber decrease? Will...
Jul3-09 05:51 PM
3 816
Hi all! I have a problem about the gears used in a winder as hown in the picture. You can see right in the front...
Sep5-05 03:38 PM
5 1,165
As i have read in several articles, it is obvious that short-stroke or oversquare engines can rev higher and produce...
Feb5-11 08:14 PM
jack action
35 16,192
when it is said that the recoil of a 120mm mortar is 40 tons, which one is meant to be the recoil: the reaction force...
Jun24-10 09:15 PM
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Hi everybody, I'm having difficulties sizing a compressor for natural gas. First,my assumption is to take natural...
Nov25-10 09:41 AM
2 1,455
Hi all, I'm doing a experiment at home I'm trying to know how the flow rate on the water height that tossed from a...
Sep24-10 02:29 AM
3 1,141
Hi, I asked for help in such problem before but could get what satisfied me, so I'm here for your help again. I'm...
Sep9-12 05:50 PM
5 943
I have a few questions that have to do with a viscosity on the surface of an object, the boundary layer and the...
Jan13-08 07:50 PM
12 2,987
Hi, all. In the picture is a question and its solution. Here I can not understand how is the graph Ln P versus T...
May19-14 09:10 AM
2 391
ok...i have a small question on aerodynamics for cars: in fluid mechanics, we studied the flow of air past an...
Aug28-09 06:19 PM
53 5,945
I was not sure where to put this since it is both enginering and math so feel free to move it but to the point I...
Apr12-09 06:46 AM
Ranger Mike
17 2,639
Attached is a question from my book, I know that the answer is 112KN but can't work out the method for getting there....
Nov22-09 07:59 PM
3 887
Hi there, I have a safety question. I want to produce high temperature, high pressure steam. On a 1/2 inch tube,...
Mar27-08 04:56 PM
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So, here is some truly putrid reporting about a truly wonderfull story: ...
Jun30-08 01:21 PM
2 1,483
i have attached a .gif of a simple design i made for a stirling engine...i dunno if it would work or not, that is,...
Dec27-08 11:48 AM
4 9,336
It's not so simple to me being that I have no background in fluid dynamics, but it seems like it would be fairly...
Oct25-04 02:34 PM
6 2,522
I have this doubt on spur gears Is it necessary that the pitch circles of the two mating gears need to be...
May17-10 07:24 AM
4 1,218
Hello friends, I have a small query regarding a force being applied to a surface... I have a force of 0.1MN which...
Feb19-13 05:08 PM
5 542
Mar29-12 03:51 PM
2 1,007
Not necessarily a spring, I was looking forwards towards an arrangement so as to provide constant force regardless of...
Dec14-09 09:42 PM
5 1,428 (use save target as if speed limited) PhD...
Mar3-06 06:47 AM
1 2,665
Hi peeps........... Physics forums rock.......... k now. Before asking my doubt I need to ask small small doubts...
Oct4-07 01:41 AM
mr. wankel
11 2,407
I was wondering the critical load vary as a result of forced vibration? Intuitionally, I thought the critical load...
Nov4-10 07:21 AM
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For my design I need to know some rough value about the viscous damping of an ordinary springs (which is supposed to...
Aug10-09 12:04 PM
0 2,452
When calculating pressure from a bolt to the underlaying material, you can use this formula: p=(4*F)/(Pi*(D2-d2)) ...
Nov2-10 03:38 PM
0 740
Hey all, What I'm trying to do is find a way to affix a wire or group of wires to the frame of an FSAE car to...
Apr13-10 10:38 AM
13 2,058
Gentlemen, I have come across this term "whirl pit problem" , a couple of days back and was trying to make out what...
Dec4-04 05:40 PM
0 1,148
I have an idea where a car can be lifted up using magnets and sent forward using wind, but I'm not a licensed...
Dec1-11 11:56 AM
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In working with chilled water system, why do we install "double regulating valve" and "2 way valve" when connecting...
Jan18-14 06:01 PM
Simon Bridge
7 539
how to select split a/c units for agiven area?
May24-08 07:16 AM
5 2,074
I have few questions as i am bit confused Q1. I want to know what are the influence of the air/fuel ratio on engine...
Nov14-11 02:05 AM
5 1,379 Congrats to the A380 folks....
May2-05 11:36 AM
18 2,330

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