Engineering and Design

Paper prototyping for wireless robot

http://www-128.ibm.com/developerworks/wireless/library/wi-robot3/?ca=dgr-lnxw03RobotBuild

Lots of plans for a variety of projects

http://www.uniqueprojects.com/projects/other/missionbed/missionbed4.htm

Fluids

Airplane design - http://www.aeronutz.flyer.co.uk/

Water Rocket - http://ourworld.compuserve.com/homepages/pagrosse/h2oRocketIndex.htm

Structures

Electrical

Robot Car -

http://www.blogcadre.com/blog/jason_striegel/howto_make_a_robot_car_-_part_1_overview_2005_10_25_13_22_21

Heat

Communications