Hi guys...
we are currently interested -in our clip of aerospace engineering in my uni.-
to build a complete jet engine ... unfortunately.. we have not yet found any detailed explanation to each step in doing so .. if you have any link or uploaded book or even you remember some manuals...
Homework Statement
A ball is thrown horizontally from the top of a building 70.0 m high. The ball strikes the ground 90.0 m from the base of the building (Neglecting air resistance). How fast and at what angle (relative to horizontal) does the ball strike the ground?
Homework...
I was thinking if the strenght of the permanet magnet could be parallel to I , the rate at which the the magnet (or wire) rotates parallel to V & of course the wire resistance would go with R . If there is some type of way to determine the outcome of a generator before building it, starting it...
Hi I am relatively new to electrical engineering, I want to make my own parking sensors for a motorcycle, don't ask me why, I would just like to play about with the idea. Could anyone suggest what sort of sensors I would need and frequencies etc?, I am looking to have one separate transmitter...
Problem solved! Thanks again Thaakisfox!
Homework Statement
A ball thrown horizontally at 2.2 m/s from the roof of a building lands 36 m from the base of the building. Calculate the height of the building.
Vox = 2.2 m/s
Xo = 0m
Vx = 0 m/s
X = 36m
Homework Equations
y = Vosin ao - (0.5)(g)(t^2)...
Hello all. I've been wanting to build a Stirling engine at home out of parts that i could easily afford/scrounge up. Not one of those small ones that you hold in your hand, but one that could generate some real work. Enough to run a small generator maybe. The problem is that i have absolutely no...
The nodes that have been used in LQG to build spatial geometries (almost from the start) turn out to be quantum polyhedra. MTd2 spotted this paper yesterday:
==quote==
http://arxiv.org/abs/1009.3402
Polyhedra in loop quantum gravity
Eugenio Bianchi, Pietro Doná, Simone Speziale
32 pages, many...
Homework Statement
you and your friend throw balloons filled with water of a roof of a building. You drop yours from rest, he throws his with an initial speed of 72.52 m/s^2 3.7 seconds later. They hit at the same time. How high his the building.
Homework Equations
V=Vi+at
(V^2) -...
Homework Statement
A stone is dropped from the roof of a building; 1.90 s after that, a second stone is thrown straight down with an initial speed of 29.0 m/s, and the two stones land at the same time.
a. How long did it take the first stone to reach the ground?
b. How high is the...
I am looking at this building and wondering how building torsion is resisted as well as what role the roof diaphragm plays in it, hence what would be the shear force and bending moment diagrams...
If someone could assist me with some information re: the following it would be very much appreciated. I am planning to build an energy system for my home to address the drastically increasing power bills we have been getting as a result of the unusually hot weather lately. Problem is I am not...
Homework Statement
Build a stair climbing robot. There are no required dimensions.
Homework Equations
MONEY
The Attempt at a Solution
I need help brainstorming on some designs of a stair climbing robot that is cheap but yet effective. I have connections with law enforcement so...
I am trying to design and build a small scale desktop water tunnel so I can observe the fluid dynamics of airplane models. I was thinking of a closed loop system using a long fish tank with a circular hole at both ends. PVC pipe will be attached at both openings. how does going from a round...
Hi guys, I am new at this so sorry if i get the format wrong.
Im trying to build a basic metal detector that will respond when a steel pendulum passes nearby. A simple response is all that is needed right now.
I thought of this:
Building a RL circuit with a copper coil air core. placing a...
hi, i am pretty new with electronics, and i can't find any simple boost converter circuts on the enternet. i would like to make the circut THE MOST SIMPLE i can, with the fewest possible parts. for a power source, i have 9v-1w. for the output power, i would like to send a thin spark from 1...
Hi Guys
I m trying to make a Stirling engine power by solar heat.
Somewhere I found out that the solar flux available on Earth is abt 1350watts/m2
Is this heat energy only or "heat & light " combined??
I m trying to find out if my soar engine will be better than traditional solar...
The canceled Superconducting Super Collider had 3x beam energy of 40TEV vs LHC 14TEV.
While it has been cancelled, could it be re-started 20-30 years after LHC hits diminishing returns in the future?
Is there any new expected physics in SSC range over and above LHC that would make it worth...
Hello again,
Im trying to build a neural network using C++. Has anyone had a go? I think the potential implications are really interesting and would like to hear about how people might have implemented them. Another general one for anyone.
So here is the situation our department seems to face. We are a fairly large public school in the central valley of California. Our department is shrinking and there is little opportunity for students to be competitive for when they apply to phd schools. This summer, a fellow student and I are...
As useful as an EEG machine would be for me, I can't afford to buy one but I'm going to build one in the near future. There is a lot of information on this site
http://openeeg.sourceforge.net/doc/
and from what I've read so far, building an EEG machine is no simple matter. Not for the layman...
I recently extracted the control system out of a severely damaged RC aircraft (a very simple kit deal). It's got two servos, and a pretty good motor, which works out perfectly for me!
I want to build a new aircraft from scratch using the recovered control system. For the fuselage I'm...
So I understand that the tensor product of two vector spaces constitutes a new vector space. In the case of spin coupling you have some arbitrary vector |x,z> where x represents the spin state of particle 1 and z represents the spin state of particle 2; bot spin states being general 2 element...
Hi there, could someone "please" help me with a Q regarding weight loading of a steel beam.
I wish to remove a post over my verandah which would leave a span of 7110mm, The verandah comes out 2.4m, and has steel rafters 1800mm apart with steel roof batterns and will have a corugated iron...
Hello, I would like to start by saying that I know very little about nuclear decay, so please do not flame me if this is a silly question:
I am wondering if it is possible to generate enough potential to light an LED indefinitely using pure beta decay. Let's say the circuit consists of a...
hi,
i am interested in nuclear physics but i don't really want to delve into the complexity of it, so could someone please give me an idea of the practical approach to making a breeder reactor, i do not intend to build one, i just would like to know how i would do it if did want to build one...
Hello!
Well I am in second year Engineering Physics and we're building a robot this summer. We have four students in my team including myself. We're to build a robot that follows a loop of black tape on a track, and race with other robots.
I have a few questions:
1. We decided to use...
Homework Statement
As our final project, we have been instructed to design a goblet (which will actually be physically prototyped using a 3-D printer) according to the following specifications:
1. The goblet must hold exactly 200 cc.
2. The goblet must be symmetric (a solid of revolution)...
Homework Statement
A winch is positioned on top of a building, a distance 70 m above ground level. A chain of length 95 m and a mass per unit length of 1.2 kg/m hangs from the winch along the side of the building. Find the work done (in Joules) in reeling up 60 m of the chain.Homework...
I´m trying to find approx. numbers or formulas for a submarine like structure to mantain a constant volume. For a given volume, which materials and to what thickness should the container be?
hey ppl,
In a nutshell, need to come up with a 10mX2m foot bridge over a river made from steel and concrete
also to include foundation design.
borehole data are as follows.
Depth. Description
0.2M Topsoil
2.60M...
Homework Statement
There are two storage rooms, (A) and (B) connected by a single doorway. Only room (B)
has an outward vent, so all air exiting the rooms does so through this vent in room (B). The
ventilator you will install drives outside air (78% nitrogen) at a certain flow rate through
a...
Hey all,
I am trying to make a simple remote controlled switch (without any digital IC's) and was wondering if anyone knew of any schematics, etc.
Thanks,
John
Hi, I am attempting at making a simple device that will run on dc power that just spins a item i place vertically in the air. I am trying to do it without having to by any of the parts being i could just buy a new one for around 250 bucks.
My first question is how to you determine the...
Hello, I am brand new to this forum. It looks like there are a lot of people that might be able to help me on this project.
I need to build a 4-bit searching circuit. The circuit takes a 4-bit word and searches a 4x15 memory for that word. It will have two modes, a Load Mode, where the words...
Hi 2 all,
building up principle is defined in the following form for, for example, Scandium (21):
3d^{1}4s^{2}
building up principle defines:
4s < 3d
so, the energy of 4s level should be smaller than for 3d
the energy is defined as:
e[\text{n$\_$},\text{j$\_$},\alpha...
Is it possible to build an adjustable transformer that can take 110/120 and dial it all the way down to 1 volt? I'd like to build one if possible to aid in physical development so it's very important to be able to take it as low as possible in the beginning. I'd like it to have 2 electrodes as...
O hai.
http://laughingsquid.com/the-worlds-largest-lolcat-invisible-bike-mural/
I found this freaking hilarious, even if it is old.
And for those of you who don't know what LOLcats are (shame on you!), here's a TVTropes explanation:
http://tvtropes.org/pmwiki/pmwiki.php/Main/Lolcats...
Hello. As a memorial I am trying to build a light-sensitive unit that will make an LED continuously glow at night. I want to put this in an extremely remote place and be reasonable confident that it will continue to operate indefinitely. The idea is that once it becomes dark, a photodiode will...
. I tried making a newman motor according to a video on youtube. I have copper wires coiled around a plastic pipe, 200 above and 200 coils below the middle of the plastic pipe. The shaft in between is made of iron and it is quite thick. Now when I connect a 9v battery to the two ends of the...
I'm working on a robot for my final project in class. It's your basic line following deal. It has 5 sensors that face the floor on the front and it just follows a track made of black tape.
I'm just going to use this one thread for all my issues.
Current issue: I don't get a certain type of...
The project entails the design and simulation of a system to stabilize a building in the event of an earthquake. The idea is to numerically test the response of the system to earthquake conditions and see how it performs. It will also involve varying the relevant parameters to obtain the most...
Hey all. I am building an IR modulator but seem to have a small kink in the design. Here is my schematic:
Here is a picture of the oscilloscope, connected between ground and the output of the TL555 timer and the output of the second transistor (the output pulse going into the LED's)...
I was searching about the possibility of building a simple mobile phone, but I found an old topic here indicating that this is pointless and hard.
Actually I want to make a mobile phone which only receives the incoming ring and vibrates.
I am asking about the possibility of doing this ? It...
Hey guys!
Me and all of my friends got this work for a mathematics question. But none of us can figure it out. We think they supplied too little information. We studying Engineering. I hope I posted it in the right place.
Homework Statement
The base of a building and the base of a...
For class, a partner and myself must build a mousetrap vehicle which travels down a runway (120 inches), executes a 180 degree turn around an obstacle(72 inch maximum width) and travels back past the finish line. http://www.geneng.mtu.edu/olympics/2010/mousecar_competition_b2010.pdf click here...
Homework Statement
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.70 m/s at an angle of 22.0° below the horizontal. It strikes the ground 5.00 s later.
Find the height from which the ball was thrown.
The Attempt at a Solution
i...