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Development of aircraft and space vehicles. Propulsion, Aircraft Structures, Crafts, Atmosphere
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Gear heads unite to discuss Vehicle Dynamics, Safety Engineering, Performance, NVH, Ergonomics, Durability...
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Jan16-12 Greg Bernhardt
Dear all, I checked job numbers on indeed Canada, and when using Pro/ENGINEER and solidworks as search words, I got...
Jul28-14 02:06 PM
stevemilw
25 32,188
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
FeynmanIsCool
61 95,135
Hi all, i hope someone can help me out here. I have a rod (not massless) hanging like a pendulum. As its axis of...
Jan7-11 10:22 AM
Shockman
4 1,006
Hi all, I am currently in the process of identifying a continuous lab scale liquid-liquid centrifuge for...
Jan6-11 10:13 PM
JaredJames
1 1,930
Do any devices exist that can assist your arms in exerting a force of 160 lbs or more in a direction of such where you...
Jan6-11 06:58 PM
JaredJames
4 950
My question is, how high can be the angle of attack of a hang-glider, paraglider (the canopy) or a sailplane, gliding...
Jan6-11 04:43 PM
viscousflow
1 2,304
Does anyone have any good online reference sources that derive the basic equations from Mechanics of Materials such as...
Jan6-11 04:01 PM
1988ajk
1 706
Hi guys, I wonder whether we can roughly estimate the energy used to buckle a hollow tube (by calculation)? I was...
Jan6-11 01:00 PM
Mapes
1 1,837
i recently dismantled a 3 speed (tuk tuk) gearbox.But unlike usual 4 wheelers,i found the idler in the differential...
Jan6-11 11:06 AM
monty37
3 2,909
I have a machine I want to build, the principle works on the basis that products enter a cylindrical sieve 900mm long,...
Jan6-11 02:46 AM
viscousflow
1 920
I am looking to bypass an existing sewer pipe with another pipe. The existing pipe is rectangular, approximately...
Jan5-11 04:30 PM
maxx_payne
1 1,254
Hey guy, I'm working at my school to ID our collection of kinematic models and make signs for explaining them. I...
Jan4-11 06:12 PM
Mech_Engineer
2 973
hello everyone i am a maintenance engineer in old factory so while we were working on an old machine yesterday we...
Jan4-11 02:05 PM
berkeman
1 896
Hi there, I am currently doing an upgrade of the drain lines at a power station, the steam temperature (in the...
Jan4-11 01:46 PM
JaredJames
1 833
I'm here because I'm debating the purchase of a 1/4" thick 6061-t6 aluminum chassis reinforcement plate for a 3000#...
Jan4-11 11:18 AM
Sam_Sung
0 3,003
Hello everyone, I m working on a project that I want to create linear motion to carry a load which is constructed...
Jan4-11 08:02 AM
Q_Goest
1 5,755
Hi I have a pump which for 0 head will provide a max flow of 12 l/min (0.0002 m^3/s). For the piping I am using...
Jan4-11 07:26 AM
skaboy607
5 2,848
I want to buy a book by a particular publication for Pro Engineer Wildfire 3.0 Unfortunately The book is available...
Jan4-11 01:02 AM
FAlonso
1 2,370
Hello PF users: I am looking to perform a fatigue and fracture analysis of a machine component subjected to a 2D...
Jan3-11 01:31 PM
iamkratos
0 1,262
haw can i calculate the thermal energy (watt or BTU ) of the hot air (or the exhaust air of the chimney) according to...
Jan3-11 08:35 AM
MrMatt2532
4 1,098
Are their any devices currently available that can assist a human in exerting a force of 700 N or greater? Exactly how...
Jan2-11 05:30 PM
Shaun_W
11 2,695
If you are not familiar with what a wingsuit is- you should google it. Now... Let's assume we have ourselves a...
Jan2-11 03:32 PM
inviscid-lift
4 1,624
Hello guys, I am relatively new here. I hope to spend more time here helping and receiving advice more often....
Jan2-11 01:00 PM
Q_Goest
4 1,510
I have a question about network flow pressure drop. In a piping system with several identical components in parallel,...
Jan1-11 09:07 PM
ishutopre
4 2,496
hello people. im a aeronautical engineer student and i need to do a work about low speed airfoil.. can anyone tell...
Dec31-10 12:11 PM
ccrummer
4 11,782
Hi, I am working on a case with a flexible cylinder with a flow of air inside and a cross flow of water. This is a...
Dec31-10 07:53 AM
hoomanya
0 585
hi I'm designing a telescope mount and I need a motor which has less than 1 rpm I think I'm going to need ((...
Dec31-10 02:21 AM
koolraj09
6 1,229
My classmate suggested me to use the sound sensor existing in damaged microphone so that I didn't have to waste time...
Dec31-10 01:57 AM
Excellent3d
0 718
how do we find the natural frequency of a tower of a wind turbine if, say, the tower is circular hollow cross...
Dec30-10 06:47 PM
kaminho
6 5,253
I am seeking help for a design solution to run wiring through a rotating shaft spun by a motor. Imagine a display...
Dec30-10 04:06 PM
Bob S
8 2,134
Hi, I have a question regarding the calculation of internal energy of components after collision. In...
Dec30-10 05:23 AM
prasadpatrudu
4 2,185
Hi, I need to know how one can check space and time convergence using Richardson Extrapolation. Does anyone know...
Dec29-10 05:12 PM
mina1363
5 2,968
hello..i want to do optimisation of a heat pump...how to go about..i know engineering equation solver...what and how...
Dec29-10 10:16 AM
trish129
0 705
Hi guys, im a bit confuse on how to calculate the power of the motor, the torque and the speed of the motor shaft +...
Dec27-10 11:40 PM
koolraj09
5 2,132
Hi, I'm performing some calculations and I need oil viscosity at 20C. I have checked in some standards like SAE...
Dec27-10 12:19 PM
serbring
4 3,880
I need to study the relationship between fluid velocity and time. The fluid is kept in a big open tank before passing...
Dec26-10 10:41 PM
derekteo0710
0 712
We are trying to build a solar water heater using a 4' x 10' trough design and are still trying to figure out how to...
Dec25-10 03:29 PM
frazelle09
0 767
Hi I was wondering if anyone could point me towards some resources (I've looked a lot online!), or give me some...
Dec25-10 09:31 AM
AlephZero
7 2,036
Generally the working fluids in a power generating system is either water (steam) or air. This I imagine is because...
Dec25-10 02:52 AM
Curl
4 818
I have a motor driving a gearbox. I had DE bearing of the gearbox replaced recently as pitting in the inner race was...
Dec24-10 05:00 AM
brewnog
3 2,716
Hey, I've wondered about the reasoning behind, or rationale for, the angled big end attachment of the connecting...
Dec24-10 02:59 AM
Ranger Mike
4 2,102
What formula would one use to determine the centrifugal force at the tip of a rotor of 35ft diameter, rotating at...
Dec23-10 09:00 PM
Heloego
1 1,031

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