www.pulse-jets.com

Hi Dave

Why don't you use the radial inflow turbine wheel as is ??

My latest creation ....... http://www.youtube.com/watch?v=8Y8jpaDTkEY has one

Cheers
John

Hi Dave

Theres plenty of small axial turbine wheels available in the UK , no need to go to the trouble of modifying a radial one , have you checked out the GTBA ??

Cheers
John

Hi Dave

Where are you situated ??

Cheers
John

Hi Dave Duhhh............LOL...I really should pay more attention to what I'm doing :oops: , .......................There are some radial turbs that are "mixed flow" in that they're got a part axial component and are being used in high pressure ratio turbos , but converting a radial turb into an axi...

Hi Dave Very little chance of it working as an axial stage ..............there needs to be work added to the air for compression to take place , the centrif. comps inducer is designed to produce the least amount of disturbance to the incoming air until it is well and truly "captured" within the blad...

Hi Rocket Man

Whatever you do , please DON"T have anything to do with the Springer plans .

I've sent you a PM ( Personal Mail) , please check your Inbox

Cheers
John

Hi Anders The "bent" inducer vanes reduce shock losses by "capturing" the incoming air as smoothly as possible before it is "worked upon" by the comps blading , it is possible to run compressors without "bent " inducers, but the efficiency is pretty bad . The actual mass flow from a comp is a produc...

Hi Axel I log in every few days to keep an eye on your progress, its been an interesting build , always nice to see some original work :-) Your compressor wheel must be very "flexible" to have such good low speed performance ,............. I have a lower limit of ~25,000 rpm for my 141mm dia comp , ...

Hi Axel Very impressive video :-)) 14K is a pretty low rpm for such a large engine , 590C is a reasonable temperature considering all the parameters . You should feel proud of her , quite an achievement ....................LOL....that thin turbine wheel worries me a bit though :shock: Could you also...

Hi Anders

Nice "little" fellow

Shaft or thrust ??

Cheers
John

Hi Tim Kamps book .............. https://shop.traplet.com/search.aspx?q=thomas%20kamp&h= https://shop.traplet.com/product.aspx?c=183 Can be purchased here in OZ/Sydney from .... http://www.creativemodels.com.au/ http://www.creativemodels.com.au/pdf/books/traplet.pdf If you'd like to Personal Mail (P...

Hi Anders With low pressure ratio combustors they certainly need to be larger , combustors are compared by their "combustion intensity " .....BTU's / cubic foot/atmosphere/hour , so if the "atmospheres" ie pressure , is low , then the cubic feet need to be greater to compensate . The engine shouldn'...

Hi Anders LOL........just a case of flowing sufficient air and accelerating it , but there are some engine weight "problems" once the size increases ...............probably better to have a gas producer feeding a freepower with its own larger fan to move the greater mass rather than relying on the e...

Hi Anders 500 lbs of thrust isn't out of the question :-)) ............pretty crappy fuel burn rate though with such a low pressure ratio :-(( .............better to hunt around for a really big turbo rotor from an industrial sized diesel that can be spun up to produce some serious pressures . . Hav...

G'day Tim

Totally agree with you about his formulii . Kamp's book is a little easier to understand I feel, but even his reasoning is a little vague at times .

Where abouts are you here in Oz ??

Cheers
John