Official Fulqrum Publishing forum - does a propeller screw itself on air or is it just reaction

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- - does a propeller screw itself on air or is it just reaction (http://forum.fulqrumpublishing.com/showthread.php?t=28926)

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

check out this antinewton project im working on

a virtual center of gravity in order to build a columbus box

a box that holds on its edge :)

http://i40.photobucket.com/albums/e2...Imagen0186.jpg

Quote:

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

No.....it's just lift

Quote:

Originally Posted by GregHouse (Post 379648)

i suppose its concidered geeky to find interesting in such matters :mrgreen:

Lol is this your new account Raaaid? The "Raaaid-like" spelling gives it away..

Quote:

Originally Posted by cheesehawk (Post 379437)

By definition, heat is transferred, not cold.

Which is relative to adjacent atoms. The transfer of energy is by infrared radiation, conduction, convection.

Quote:

Originally Posted by Sternjaeger II (Post 380061)

Lol is this your new account Raaaid? The "Raaaid-like" spelling gives it away..

I thought the same

Quote:

Originally Posted by raaaid (Post 380001)

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

Go with a winner: Join the Spanish Armada!

Quote:

in fact my plan is make a living out of fixng motorbikes

That's gonna be a shitty living.
You can open a shop and sell them too, then maybe.
Repairs and peripheral stuff usually accounts for 40-50% of total turnover.

Quote:

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 :)

LOL, maybe you should first get a business degree. :rolleyes:

Most entertaining this thread is!! LOL

actually i believe in conservation of energy since it implies conservation of info

think about it each thought is carved in the satrs

but i disagree with conservation of momentum

check out this design for a columbus box:

http://i40.photobucket.com/albums/e2...Imagen0188.jpg

1.
WTF is the definition of a "columbus box"?
A Perpetuum Mobile?

2.
I don't understand your drawing. Please describe its function more precise. ;)

Btw:
Not bad raaid, page 1!
http://img163.imageshack.us/img163/7877/48492337.th.png

Uploaded with ImageShack.us