Dual-Fuel Combustion Project - 75mm Inducer Turbojet Engine

[emes11]

Hi Everyone,

I have been developing a dual-fuel combustion chamber for my mechanical and aerospace engineering honours project over the last year - this idea came from the concept of incorporating an alternative secondary fuel source with a traditional kerosene primary. I have researched methane and hydrogens adoption as secondary fuel; however, due to safety concerns, focused primarily on methane and the various methods of injection. I have recently tested the combustion chamber on LPG and kerosene and successfully demonstrated reduced emissions when compared to just kerosene. I will get more into the specifics of the project as it progresses, but for now, I would like to give an overview of the turbojet engine itself and the supporting subsystems.

Here is a pic of the current setup being tested through The University of Adelaide:

I have uploaded a few videos to my youtube channel; the most recent being the first recorded startup on LPG: www.youtube.com/watch?v=ULt1R9UdLys&t=21s&ab_channel=EGEngineeringAustralia

I look forward to sharing more of the work on this project, including the various calculations involved in the combustion chamber design, CAD models, CFD analysis and development of supporting subsystems such as the oil, kerosene, LPG, electronics and emissions analysis systems.

Lachlan

[wannabebuilderuk]

That's a nice setup you have there, should be interesting to see the outcome of it once you've gathered all the data you need.

Seeing the clamps holding down the sheet makes me chuckle at the times I've done something similar on an almost finished project because it's quicker than making up a fixing method when you just wanna test it already lol

[racket]

Hi Lachlan

Congratulations :-)

Will looking forward to your development "numbers" , nice build .

Love all the "mandatory" safety precautions ;-)

Cheers
John

[emes11]

Thanks for that - yeah I was in two minds about fixing the steel sheet down as I plan on adding an AB next year and it would need to be mounted much lower!


Thanks John, I sent you an email earlier about the safety ordeal; we got there in the end but it was a rollercoaster of a week!!

Lachlan

[racket]

Hi Lachlan

Glad to be of some help :-)

LOL...................your "safety" issues gave me a good laugh , but the thrill of that first successful spoolup is worth all the effort ...............enjoy it

Let the fun times roll on .

Cheers
John

[emes11]

Here are a few more images of the combustion chamber and supporting subsystems. I will get more into the technical side later in the year when I have some free time.

  


I have uploaded a few more videos to youtube including the first kerosene run: www.youtube.com/watch?v=-5B0n2tV8Hs&ab_channel=EGEngineeringAustralia

Lachlan

[pitciblackscotland]

That's a tidy set up I like the oil system ( Heavy Duty ) Nice

[turboron]

emes11, who manufactured the oil tank? It looks like a fuel cell.

Thanks, Ron

[emes11]

G'day gents!

The jet engine bug bit me again... After a long break following my thesis I've finally returned to my turbojet project. I've been pursuing my career in aerospace engineering which has kept me more than busy, but it's been amazing getting this engine back up and running.

I've been tinkering with a digital monitoring setup for capturing real-time and post run data from some digital pressure sensors and thermocouples. Currently running on a raspberry pi as a prototype, and working out the kinks with sensors.

I've made a short video that you can check out:

www.youtube.com/watch?v=3RYzoa2girM&t=6s

Still a preliminary prototype but going well so far - I'm open to suggestions if anyone has done something similar!

Cheers,

Lachlan

[racket]

Hi Lachlan

Very nice presentation :-)

Cheers
John