does a propeller screw itself on air or is it just reaction

[raaaid]

yeah imo college simplifies too much things:

propellers don just work by reaction, they also create a vacuum in front, is this the coanda effect?

also engines dont produce work just by heat as i was taught to account for

the change of phase of gasoline into a gas produeces huge work not accounted for in thermodinamics

edit:

imo the advantages of water injection is cooling and huge pressure and work by the change of phase of water

edit:

im for subjects from becoming a 1st oficial engineer in any size ship and also have a diploma in english filology

but i know that the educative system is intended to make people stupid, full of faith and without critic spirit and questioning of things

in fact im so rebel and unbending that what fro a normal person would take 6 years ive been 18

persistence is my motto in rof

but contray to most you wont see me hey i have a degree on this so shut up im right

i accept im almost totally ignorant

in fact my plan is make a living out of fixng motorbikes or making sculptures and fight the chinese

i use my hands to make sculptures so each kg of material costys me 5 euro

chinese use molds and each kg of material costs 50 euros

so i can beat up the industrail with the artistic quite easy

edit:

this is my last work, i dont know how but mozart put music just for it

nahh i was joking its just the typical unwanted sync

http://www.youtube.com/watch?v=AZtkh...ure=plpp_video