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Questions and Ideas

GarryB

GarryB: Posts : 38978
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Post n°401

Re: Questions and Ideas

GarryB Sat Jun 13, 2015 10:14 am

You are using maths the wrong way around.... it can only be used to test what we know about already, it can't find new things on its own.

For instance with different materials in AESA modules you get different performances... our models of materials are not so complete that you can punch in a material and the computer will tell you what its performance will be. There are too many parameters that can change the results.

KomissarBojanchev

KomissarBojanchev: Posts : 1429
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Post n°402

Re: Questions and Ideas

KomissarBojanchev Sat Jun 13, 2015 10:26 pm

Would it be possible to make a supercar with a gas turbine engine?

If yes it would offer the advantage of being smaller due to a smaller engine although larger fuel consumption cancels this out.

Mike E

Mike E: Posts : 2619
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Post n°403

Re: Questions and Ideas

Mike E Sun Jun 14, 2015 12:21 am

KomissarBojanchev wrote:Would it be possible to make a supercar with a gas turbine engine?

If yes it would offer the advantage of being smaller due to a smaller engine although larger fuel consumption cancels this out.

Cars have been equipped with turbines in the past, but it simply is not practical. - Jag's C-X75 was going to be have two turbines combined with an electric motor. The 60's Chrysler Turbine is one of the only cars on the road that actually has one.

They are smaller but weigh a ton, and the fuel economy is unbearably bad.

collegeboy16

collegeboy16: Posts : 1135
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Post n°404

Re: Questions and Ideas

collegeboy16 Sun Jun 14, 2015 1:47 am

KomissarBojanchev wrote:Would it be possible to make a supercar with a gas turbine engine?

If yes it would offer the advantage of being smaller due to a smaller engine although larger fuel consumption cancels this out.

whats the point of a supercar that cant roar like an angry beast for shit when you step on the gas?

GarryB

GarryB: Posts : 38978
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Location : New Zealand

Post n°405

Re: Questions and Ideas

GarryB Sun Jun 14, 2015 5:13 am

Very few supercars are known for their fuel economy... I suspect the best propulsion set up for a super car of the future would be a fairly small but powerful gas turbine that is used to generate electricity to drive the car via electric motors on each wheel.

It is a gas turbine so convert it to run on hydrogen with compresses hydrogen gas in high pressure cylinders in the centre of the car protected from impact.

even in serious crash the main danger will be high pressure gas... at normal air temperatures and pressures hydrogen just burns and does not generally explode without a fairly perfect mix of oxygen and hydrogen.

Gas turbines can be very fuel efficient when not run under load and at optimum revs like they do when connected to an electric motor acting as a generator.

Many power stations and indeed ships use gas turbines in such roles...

victor1985

victor1985: Posts : 632
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Post n°406

Re: Questions and Ideas

victor1985 Sun Jun 14, 2015 8:46 am

GarryB wrote:You are using maths the wrong way around.... it can only be used to test what we know about already, it can't find new things on its own.

For instance with different materials in AESA modules you get different performances... our models of materials are not so complete that you can punch in a material and the computer will tell you what its performance will be. There are too many parameters that can change the results.

Well is like this: we dont know how a new material would be but....knowing from chemistry about ionic and covalent bonds...knowing the state of energy of every electron in function of their shell .....knowing how the form of orbitals affects the properties of atom....knowing how the Z and A numbers affects the atoms ...and for example the interaction of waves radio ones or others whit matter in function of all this....is easy to get whatever material you want. Think that some materials were predicted long before someone actually create it. Just make a function from -infinit to +infinit and you get all posible properties. For example a function where electrons tend to remain 2 or no bigger than and Z tend to be bigger than 3 and you get a series of posible materials. Then you create the material whit the desired properties from results that function give. I'm sure this is a way.

victor1985

victor1985: Posts : 632
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Post n°407

Re: Questions and Ideas

victor1985 Sun Jun 14, 2015 12:51 pm

Can be maked a battery whit air, a owen based all on compton effect?

GarryB

GarryB: Posts : 38978
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Post n°408

Re: Questions and Ideas

GarryB Mon Jun 15, 2015 1:40 pm

Computer simulations work by having a model... a complex set of rules that determine how things work... the problem is that it is only as useful as the model is accurate.

A computer model is excellent to simulate different airfoil shapes because airflow can be calculated precisely. the problem is that when things are unknown then a computer programme wont tell you anything you don't already know and even using a super computer just means it will do it faster.

You can use a computer simulation to test different configurations, but to test brand new things you are often better off using real experiments with new materials and configurations.

victor1985

victor1985: Posts : 632
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Post n°409

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 10:10 pm

For russia are right now best idea. What matterright nowis fast and quality production

victor1985

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Post n°410

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 10:21 pm

Question: liquids can form EM waves? Maibe kept water or else inside plastic tubes or glass tubes they will provide EM waves. That would mean faster electrons so high frecvency thus powerfull waves. Maibe near x rays. Or whit gases. Or maibe plasma.

victor1985

victor1985: Posts : 632
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Post n°411

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 10:23 pm

Or maibe a laser that hit a cristal atom shape material. In this the EM waves would have a coherent move and back road.

Maibe whit a cristal atoms shape of a light bulb.

Maibe a computer could simulate a device based on something else than metal to emit EM waves...

Maibe manipulating electrons like in the battery will provide EM waves. Or in a two elements (liquid or wathever) reaction.

victor1985

victor1985: Posts : 632
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Post n°412

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 10:41 pm

And also a question: smaller the antenna higher the frecvency? Cause in this small antennas could provide high frecvency waves.

Question: a circle like antenna whit two transistors on it produce EM waves? And i think i just got how emp weapons work.....could be build a fast switch circuit that produce high frecvency waves?

victor1985

victor1985: Posts : 632
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Post n°413

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 10:59 pm

I think is like this.... The computer could write some rules that may lead to the result. So ...lets say a weapon dont work. You can tell to the computer what happened and then the computer would CREATE physics rules that may lead to that.

victor1985

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Post n°414

Re: Questions and Ideas

victor1985 Tue Jun 16, 2015 11:04 pm

I know the computer would came whit huge amout of posible rules. For example could provide an infinity of particles that give a rule. But....you can limit the number of answers that it gives to most probable one. Or just limitbthe numbers. Then by experimets youbtry to test all those posible scenarios.

victor1985

victor1985: Posts : 632
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Post n°415

trust in nowadays conditions

victor1985 Wed Jun 17, 2015 8:29 am

We live weird days right now. So much pressure so many lies so many personal interest of each so few to trust liesvat tv and internet. Sometimes you say to yourself that is no justice and normality just points of view of each.
So....in this conditions who to trust before get crazy?

victor1985

victor1985: Posts : 632
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Post n°416

Re: Questions and Ideas

victor1985 Wed Jun 17, 2015 8:32 am

You can everyone come whit analogies paradoxes and international known special cases of politics and justice. Examples from tv , jokes or whatever. Just to make somehow clearier what is the thruth.
This would make conversation easier

GarryB

GarryB: Posts : 38978
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Post n°417

Re: Questions and Ideas

GarryB Wed Jun 17, 2015 10:57 am

When talking about photonics what they are talking about is the replacement of the humble electric cable.
Electric cables in modern electronics are used for a variety of things including delivering power to things that need power, but one of the other most common use in a computer is to distribute information. Electricity is very inefficient at doing this because it only has two states... on or off, so it has to communicate in binary... in a 64 bit computer that means 64 1s or 0s for each character of data transmitted and it only goes in one direction... one bit at a time. And in one direction at a time. With very long cables there is a delay because the signal has to reach the end before a new signal can be sent.

Replace that copper wire with a fibre optic cable and you can send whole pages of information in rapid succession without worrying whether the signal has arrived yet or not and it can be going in both directions because the signals wont interfere with each other.

Obviously you wont be able to solder copper wires, you need and optical sensor and transmitter at each end of the fibre optic to transmit and receive the data... but the speed increases in terms of data transfer will be amazing...

GarryB

GarryB: Posts : 38978
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Post n°418

Re: Questions and Ideas

GarryB Wed Jun 17, 2015 12:08 pm

A computer is a tool that can be used to test ideas and concepts quickly, but it can only test things we know about.

For instance we have a good understanding of gravity and airflow and air density at different altitudes, so we can create a range of different aircraft shapes to test on computer simulation to see how efficient their shapes will be.

We still have to build scale models and test them in wind tunnels to perfect the designs but with a computer simulation we can test thousands of different wing shapes in a few hours using a super computer and find the best shapes for different flight performances. Once you have the best shapes you can then build scale models and test the designs further.

The point is that if you want to find something new you don't try it on the computer, you build a model and go out and experiment... if you learn something new you can add that to your computer program to make it more realistic.

A good example is the increased drag at transonic speeds... without actually testing at such speeds such things would not have been "calculated" by computer.

Morpheus Eberhardt

Morpheus Eberhardt: Posts : 1925
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Post n°419

Re: Questions and Ideas

Morpheus Eberhardt Wed Jun 17, 2015 2:46 pm

victor1985 wrote:Can be maked a battery whit air, a owen based all on compton effect?

There are electrochemical batteries that use air as one of the chemical components, the other component (the anode) normally being a metal, but air alone can't provide any chemical energy, as the reaction in between all of its components are endothermic.

victor1985

victor1985: Posts : 632
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Post n°420

Re: Questions and Ideas

victor1985 Wed Jun 17, 2015 9:20 pm

The compton effect make electronsbget out of orbitals....so ....maibe they can be somehow colected. Maibe a combination between a normal battery and air whit compton effect

max steel

max steel: Posts : 2930
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Post n°421

Re: Questions and Ideas

max steel Thu Jun 18, 2015 12:56 am

i can't access this thread : https://www.russiadefence.net/t1754p105-nato-shield-in-europe

Has anyone merged it somewhere else ? Let me know .

Morpheus Eberhardt

Morpheus Eberhardt: Posts : 1925
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Post n°422

Re: Questions and Ideas

Morpheus Eberhardt Thu Jun 18, 2015 12:46 pm

victor1985 wrote:The compton effect make electronsbget out of orbitals....so ....maibe they can be somehow colected. Maibe a combination between a normal battery and air whit compton effect

In the Compton effect, high energy photons lose energy to the electron, "possibly" to the atom, and to losses. You would be converting, with loss, the light energy to the kinetic energy of the electron and "possibly" to the atom.

jhelb

jhelb: Posts : 1086
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Post n°423

Re: Questions and Ideas

jhelb Sun Jun 21, 2015 4:08 pm

Last edited by jhelb on Tue Jun 23, 2015 1:05 pm; edited 1 time in total

victor1985

victor1985: Posts : 632
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Post n°424

Re: Questions and Ideas

victor1985 Sun Jun 21, 2015 7:35 pm

Morpheus Eberhardt wrote:

victor1985 wrote:The compton effect make electronsbget out of orbitals....so ....maibe they can be somehow colected. Maibe a combination between a normal battery and air whit compton effect

In the Compton effect, high energy photons lose energy to the electron, "possibly" to the atom, and to losses. You would be converting, with loss, the light energy to the kinetic energy of the electron and "possibly" to the atom.

Actually you dont have right. Think to a nuke. One single explosion make a chain reaction in the air not only to atoms. But also there is a EM field that move electrons that those electrons create a new EM field and so on.
You start by give some waves to 30 cm and you have a reaction over 30 meters.
Now i dont know how much loss it is.....but...is not about loose...is about make some electrons free such you can collect them. After you collected them you can use them as electricity. Think that electrons in air are very unstable. That means whit few waves you got lot of electrons.

victor1985

victor1985: Posts : 632
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Post n°425

Re: Questions and Ideas

victor1985 Sun Jun 21, 2015 7:40 pm

Well there is another way. Think to this: what happen when you hit whit something the nucleus of a atoms? You free electrons whitout loose because one single nucleus has many electrons.

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