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Physics people! Ramjets!

M

MournSanity

Diamond Member
First of all, here is the link:
Text

The link is of a homemade ramjet engine. A ramjet engine needs really fast air going through it to start up properly. Basically what I wanted to ask was, if I was making that exact same ramjet as on that site, how would I be able to calculate what speed and how much air should be going through it in order to start up. This link here has the schematics for the device. How would you go about mathematically calculating how fast the air should be going through it? Can you post the forumals and calculations? I need to know this because I am building this ramjet.

Thanks in advance.

~hyper
 
Good god, that'd be a bastard of a problem starting from scratch. You'd really have to find an aeronautical engineer or maybe a fluid dynamics specialist who has some specialized knowledge in this area.
 
You need to go really really fast for a Ramjet to give a feasible output to maintain speed. I heard something like around Mach 4/5. Got a solid fuel rocket booster on hand?
 
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