Recent content by korkotyan

You are right, I realize now that some of the problems are critical, thus should be addressed before designing the satellite. That is probably the most suitable way for me to start designing the satellite after specifying more requirements. Thank you very much mfb, anorlunda and Baluncore for...

You took it out of any proportion, I asked only twice "what do you mean by that", and it was not out of disrespect or something, I truly am not familiar with those topics, that is why I mentioned in the beginning, that I am a software engineering major. And Yes, I do want a mathematical form of...

What do you meant by fix power for I = W / V? Lets say the cylinder mass is 0.2kg. So what will happen if I try to stop the shaft from spinning, are the voltage and the current both going to increase? What do you mean by that? I will need to put a small battery inside the cylinder to power the...

I can use a magnetorquer - 0 moving parts Can I use a shunt motor to be able to scale that way? But if I buy this series motor (the ebay one I mentioned), how to calculate the voltage for specific rpm? And how to calculate the voltage for specific rpm with a mass? Are there any formulas on this...

I understand all of the cautions, I resist them because they are not relevant now, especially the most detailed facts as oil freeze. You can not start a project like this, by looking into the minor problems, because you will never start the project at this rate, and there will always be more and...

I though it was clear, by generating 1G (centrifugal force) I am creating artificial gravity. And yes, I am aware of the fact that if the whole satellite spins it makes the forces inside the satellite go haywire, let's just assume the satellite is always perpendicular to Earth and only one side...

I am sorry, I did not try to offend you in any way, if I did I am truly sorry. Lets just assume it has the starting speed to rotate around Earth, and after a few weeks it falls. I am trying to build the inner part of the satellite and it only.

Emm... I am confused, you just said friction is a factor and now you say friction is not, and by the way it is incorrect that a mass will tumble forever with zero power, every satellite falls eventually, without sustaining its velocity. But please, are my calculations correct (post #7)?

I do not think friction affects to much the values, I am asking if the mass affects only the voltage or the current as well?

Well, I do not know. I am asking theoretically, how any mass (lets assume 0.1-0.2kg) will affect the voltage and current.

The brushless motor is a nice concept, unfortunately the low rpm motors are very expensive. And from what I understand brushless motors have a minimal voltage (most popular from 6V), so I simply will not be able to get 173 rpm from a few thousand rpm motor. Regarding my calculations in the...

I did not even think about the option of powering the motor with the microcontroller, I thought it will burn the chips and the buses, but it may actually work. I found this (http://www.ebay.com/itm/12V-DC-300-RPM-High-Torque-Gear-Box-Electric-Motor-Hot-/150530611989?hash=item230c52db15) DC...

Technically it should be a (0.1m)^3 box satellite. So accuracy and stability are very important. I do not think power is going to be a concern, since reaching 173 rpm requires low voltage. I am not sure about temperatures, but again low voltage means low temperatures, the only concern here is to...

Inside the cylinder will be an accelerometer, I did not yet figure this one out, how to send the data from the accelerometer to the microcontroller. But any way it is not to hard to make a mechanism, to determine the rpm of the cylinder.

I am a software engineering major, and I am having some trouble with an electric circuit in my satellite project. Basically I am trying to generate 1G on the inner surface of a cylinder with a radius of 0.03m, connected to an electric motor which has to rotate at about 173 rpm (to generate 1G...