How can scientist effectively design spacecraft systems and subsystems to take humans to the moon

IB education myp 3 What physics are behind the design process? what kind of decision s do scientists need to make to successfully create and carry out a design plan? how effective is the design process? what are the obstacles to overcome?and how?other implications scientists need to consider when designing spacecraft systems: environmental, economic, social, political. for middle school year myp3 international baccalaureate program

Added on 23.04.2015 02:24
Dear Writer I hope this is the document needed?

I am overseas will you call me overseas as well? to conform?
The number if you dial from the US 011 31 6 52 43 23 30

I f I need to call you instead please let me know?

The file is under my name Wilma Bumgardner