greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Feb 25, 2016 4:51:26 GMT -5
Kinugawa.com its the cheapest and largest compressor wheel I can find its advertised for $380. its a bit pricy but size is power.
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Feb 25, 2016 3:36:40 GMT -5
that helps a lot thanks john can i ask how you found your mass flow and pressure ratio? also is it advisable to get the extended taper tip as i understand it would give a higher PR
cheers ryan
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Feb 24, 2016 20:12:26 GMT -5
I belive it may he the same compressor racket is using in his 118/12 engine but I can't be positive. the information I can gather is.
ind:117.5mm exd:151mm trim:61 tip height:11.99mm there is also an option for extended tapered tip diameter of 163.11mm max boost 5 bar/70 psi
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Feb 24, 2016 15:49:46 GMT -5
that's all helpful info but they know their expected throughput from the compressor already allowing all other calculations from there, thats the info i cant seem to find.
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Feb 24, 2016 9:34:43 GMT -5
so im in the process of designing a turbojet i bought the kamps book to learn all the tricky math and its great except for one thing I have no idea how to calculate anything because i have no start point for my compressor wheel calcs (i can't fond a compressor map for it) am i missing something? i have the size of the compressor wheel i want to use, the trim and number of blades it has but thats it. I'm getting frustrated i have read the book 3 times over and still can't figure where to start. any help would be greatly appreciated
ryan
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Dec 21, 2015 9:34:56 GMT -5
the jakadofsky engine is totally **top secret** i cant find any info on it anywhere apart from their vauge website (cool that they managed to do it though). I have had a while to ponder and research the idea after the info you guys have shared and decided unless i make an engine that rotates less than 40,000 its just too difficult and not worth the effort/moneys anyone know a compressor wheel that maxes out at 40,000? ?? I do like the idea that you can load up the starter to charge the battery ill keep it in mind for the next build. if anyone comes up with any feasible design or idea hit me up and ill have a crack at fabbing it up! off topic but this kamps book people mention i'd appreciate a good link to buy the book for a fair price or even a download version. cheers ryan
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Dec 15, 2015 20:16:16 GMT -5
very extensive chris the quill shaft sounds like a promising avenew ideally I'd like the unit not to protude from the front of the housing but rather around it. thoughts on the use of a belt drive set as close behind the compressor side bearing as possible?? is it a good way to reduce the vibration problems that gears may cause?
I'll have to do a bit of research on dampers i have no idea what the are haha.
ryan
|
|
greazy
Veteran Member
Joined: December 2015
Posts: 128
|
Post by greazy on Dec 15, 2015 8:22:48 GMT -5
long time reader first time writer. an average guy obsessed with turbines and have a metal fabrication background.
so i was wondering if anyone has built a jet with a gear set on the turbine shaft to drive aux units like fuel and oil?? just like a commercial jet. making it a complete unit would be handy.
been toying with the idea in my head but i don't really have experience with gears. any thoughts on the idea appreciated
|
|