History
http://galileo.spaceports.com/~calipso/aircraft/aircrafthistory.htm

Fuel (systems)
http://www.aviationsafetyalliance.org/viewbin/AAdisplay.asp?id=4
http://www.ainonline.com/Features/Pilotreports2000/AIN_pr_kingair.html
http://ffden-2.phys.uaf.edu/102spring2002_Web_projects/M.Martinez/petrol%20Folder/whathapp.htm
http://www.du.edu/~rhenderl/endeavour/tech/am1.htm
http://www.afdc.nrel.gov/altfuel/ethanol.html

Union
http://www.aiaa.org

Work economic
http://stats.bls.gov/oco/ocos179.htm
http://www.avjobs.com/careers/manufacturing/index.asp
http://www.bts.gov/publications/tsar/1999/tables/01tab1.htm
https://engineering.purdue.edu/FrE/ESCAPE/fields/aeronautical/stats.html

Bernoulli vs Newton
http://amasci.com/wing/airgif2.html
http://www.aa.washington.edu/faculty/eberhardt/lift.htm

Piezoelectric
http://www.azom.com/details.asp?ArticleID=95

http://students.mainlandhighschool.org/istf2003/dmccune/board8Jan03.htm