I have several questions in in satellite,space research and spacecraft

Ahmadsh

Hi all,
In fact I have several questions, especially in satellite,space research and spacecraft. mainly i target by my questions to get the knowledge in electronics,communication and physics.so,i want to have an open discussion for my benefit and so others.

1-I want to know some details about satellite sys and hardware design,for example satellite has an antenna and solar cell wings and what else? The satellite,which is composed?What are the stages of manufacture of the satellite?

2-What is the difference between communications satellites,other NASA/scientific satellites and laser satellite?

3-What are the kinds of satellite?and what about Satellite Imaging techniques?

4-How do engineering physicist developed the satellite?

5-What about Hubble Space Telescope, is it a telescope or a satellite or both? how are the engineers devlope it?

waht

sort of too many questions for one thread, hopefully wiki address some of them

http://en.wikipedia.org/wiki/Satellite

Ahmadsh

thank you but i want details more details like reference,i want just name and i will get it to read . and what about hardware design? also How do engineering physicist developed the satellite?

take this link and read 2nd paragraph.

http://www.engineering.ualberta.ca/physics.cfm


i want really someone like satellite and has information if he took master in this field or work in company or research center or nasa.

finnally thank you for your reply

berkeman

Thread moved from EE to Aerospace Engineering to get some better views.

D H

To be blunt, the reason there have not been many answers is that the original post is too open-ended for this forum, or any other forum. Ahmadsh, you are asking us to write several books.

While you can glean some information on a broad topic such as this from wikipedia and the like, the internet is not the best place to find answers to open-ended questions such as this. What you need is an old-fashioned device called a library.

If you have a specific question there are many here who are willing and able to provide answers.

aerospaceut10

Your questions are too broad, and given the subject at hand, your answers will only be limited to a surface level type response, since most "detailed" information you might be inquiring would be proprietary/classified.

Ahmadsh

How do engineering physicist developed the satellite

aerospaceut10

They design it around the requirements and payload.

berkeman

Hey, check it out. I did a google search on satellite engineering, and got some great hits for you. Here's an MIT free online course:

http://ocw.mit.edu/OcwWeb/Aeronautic...03/CourseHome/

A satelllite engineering forum:

http://www.eng-tips.com/threadminder.cfm?pid=24&page=1

And a job search portal:

http://education-portal.com/become_a...gineering.html

You could duplicate the search to see the other hits.

jsgruszynski

I used to be a "rocket scientist" with an EE degree (I used to work on satellites and space systems) so I'll take a stab. You question is insanely broad but that's how questions often have to start.

Some specific answers:

1. What a satellite has electronically depends very much on the mission. The basics however are: power to run things, systems to control orientation and orbit, mission electronics and other mission specific components (e.g. optics, etc.).

2 & 3. There are probably too many different kinds of satellites to describe but some of the big categories are:

a. Communication
b. Navigation
c. Remote Sensing/Imaging
d. Research
e. Manned Systems
f. Military and Intelligence Systems

4. Most satellite require many, many different talents and areas of expertise to develop. One professional type can't do it all. This is why they tend to be expensive and take years to design and build. I used to work daily with physicists, mechanical engineers, electrical engineers, chemists and chemical engineers, aeronautical engineers, mathematicians, etc. with each of these types of professions having many different subspecialities. For example I knew a ChemE who specialized in hypergolic liquid rocket fuel and a different guy who specialized in solid rocket fuel.

5. Hubble is both a telescope and a satellite.


Some of the things I used to do involving satellites as an electrical engineer included:

1. System design and architecture based on mission requirements - figuring out all the pieces to do the job. This was usually in a large team of many specialties.

2. Implementation design validation and proof of concept for electronic systems and components - proving the pieces will work through lots of calculations and simulation on computers

3. Supervision of subcontractors involved in subsystem design, implementation and delivery - making sure the pieces work in real life as we designed them to

4. Technology development for space environment needs - there be heat, cold and radiation in space unlike anything on Earth so custom stuff often needs to be built from scratch

5. Component reliability testing for space environments - proving heat, cold and radiation won't be a problem for the pieces

6. Launch and in-orbit failure failure analysis - why did the rocket explode or the satellite go "dark"

I also picked up knowledge of orbital mechanics and space physics in the process, plus a working knowledge of technical Russian.