(HELP!) Science Fair Investigatory Project Suggestions.

**RVRSSG2.0** · January 30th, 2011 03:39 PM

Hi Sirs, I need your help re: our annual Science Fair.

I'm a Senior HS student so I need something Physics-related or close.
I've searched the Internet million times already but haven't found the right one.

Pleeeeeeasse I need your help.

Thanks!

**ghosthunter** · January 30th, 2011 03:52 PM

wind turbine electric generator
solar power station
air cannon
simple hydraulics
lasers

**safeorigin** · January 30th, 2011 04:55 PM

-compressed gas catapult
-railgun or coilgun running on ultracapacitors(cheaper than an array of batteries)

OR

if you wanna steal the show... pulse jets!

[ame]www.youtube.com/watch?v=AePLpM5SnqE[/ame]

**RVRSSG2.0** · January 30th, 2011 05:59 PM

Thanks for the Suggestions Sir Ghosthunter and Sir Safeorigin.

Please keep them coming so that our Group will have more to consider.

**SiRbossR** · January 30th, 2011 06:34 PM

^how about a Ram Jet? it's easier to make.

**safeorigin** · January 30th, 2011 08:06 PM

mas mahirap Ram Jet

you need lots of nickel

and you need to be in supersonic speed first to operate kasi iba ang compression requirements compared sa turbine

kaya nga yung J58 ng SR-71 e may turbine saka ram jet combo

turbines to get it to supersonic speed first then super sonic cruising all the way with the ram jet

di bale yung pulse jet... kahit garapon lang na may methanol pwede na

**ghosthunter** · January 30th, 2011 10:08 PM

Originally Posted by SiRbossR

^how about a Ram Jet? it's easier to make.

Pulse jet is easier... no need to fly at supersonic speeds to ignite it.

[ame="http://www.youtube.com/watch?v=EEHw9lInIfg"]YouTube - Jim's Valveless Pulsejet Engine[/ame]

Basically the same jet engine used to power German V1 flying bombs in world war 2.

[ame="http://www.youtube.com/watch?v=tgp3j-odseo"]YouTube - Pulsejet powered World Models TameCat RC plane, maiden flight[/ame]

**safeorigin** · January 30th, 2011 10:24 PM

anyway

in case people are wondering how pulse jets work at kung bakit tunog utot siya

think of it as a combustion na merong "inhale" at "exhale" cycles na super bilis

sa pag labas pasok ng air sa small hole, nagkakaroon ng resonance which produces fart sounds

big ones like the argus produce this distinct sound

[ame]www.youtube.com/watch?v=jTsQxwWcqJI[/ame]

parang GAU-8