9secati

A quick question for all that build turbines.

Would it be a good idea to drill the heads and add safety wire for the 6 screws that retain the NGV to the tunnel or is that overkill? I thought that upping the power, such as the UT160's high thrust capability, would also mean upping the safety factors of the turbine. I am new to DIY turbines and would hate to start up and scrap this turbine cause of lack of assembly knowledge........



Thanks all
David

Ulrich Thiel

Hi David,
that's the only way that works! Has everybody an other idea to secure the screws?

Moerig

Good idea to screw NGV to shafttunnel, Where did you see that idea?
If the turbine is balanced right you dont need to fix the screws...

Ulrich Thiel

Hi Chris,

I would like to ask you for the diffusor system. When can I get it?

Rgds Uli

Gerald Rutten

Hi Ullrich, I think you mean the fullkeil diffuser as the picture below? Do you actually have one of your UT160's fitted with this type diffuser or does one have actually run? I'm quiet currious on the results compared to the normal two-stage diffuser.

Many thanks,
Gerald

chrigui

hi Ut...

i don't miss the promise..
i have buyed the stock aluminium
i wait the 5x machine (it's busy)

i hope to work on your diffuser very soon because i need 5x machine for my engine...

Ulrich Thiel

@ Chrigui
I'm looking forward to get it for my L-39
@Gerald,
Hi Gerald, nice work! I have two units in use in my UT-160-ZA. The accelaration with the new diffusor is much better as with the two-stage diffusor.

Rgds Uli

Kelly W

My Feedback: (2)

Hi Ulrich,
Have you noticed any changes in the TSFC [Thrust Specific Fuel Consumption] with the new diffuser?

I've just had a look through my friend's CD, and only a 2-stage is included. (Very nice work by the way) Is this alternate diffuser a future upgrade you plan on releasing?

Kelly

Ulrich Thiel

Hi Kelly,

Your friend must have a CD from the UT160.
The new UT160-ZA is a update (since JetPower 2008) with a new diffusor, new combusting chamber and some other little changes.
I haven't notice changes in the TSFC. If there are changes they are not noteworthy.

Regards Uli

chrigui

little changes???

where?

Ulrich Thiel

Hi Chris,

I would like to ask you a last one.
When can I get the diffusor?

Rgds Uli

PDR200

Hi all,
I just thought I show everone the progress that I've done on my engines so far!
Has anyone completed a 160-ZA engine and run it yet?

Cheers,
Paul

Gerald Rutten

Hi Paul, very good looking stuf there. No I haven't finnished the UT engine, I went another way and replaced the compressor by yet a larger one and redesigned the diffuser angles.
The compressor wheel is a very impressing looking schwitzer wheel, 82mm turned down to 74mm, intake 56mm, tip height of 6.5mm, diffuser blade height extended to 7mm in the effort to decrease airspeed in the already too small diffuser.

All proved to work great, much better than I expected!! At 120.000rpm the engine already reaches a massive 18kg thrust and the scales where already tipped at 19kg and 20kg is possible at 125.000rpm! This is really increadable from such a small engine, I couldn't imagine this was possible. My engine weights 1150 grams which must be half of it's commercial variants with the same thrust?

Below some pictures of this little monster:

Rgds,
Gerald

jason

My Feedback: (1)

Paul & Gerald

some outstanding work on show there gentlemen and Gerald those thrust figures are really impressive to say the least!

Jason

chrigui

i return to work at the end of june.
i worked at home on the cnc program and is ready for run.

PDR200

Gerald,

Fantastic!!!!!
1150gm and 19kg thrust WOW!!!!!
Do you have a drawing of diffuser and part number of the compressor?? Do you think it would be possible to convert my inlet/diffusers to the same system as yours?
Or would I have to make new parts?

Thanks,
Paul.

PDR200

Hi all,
Progress has been slow but steady. I'm still on track to have the engines running by the end of the year

Cheers,
Paul.

PDR200

More pic's

PDR200

..

Gerald Rutten

Very good looking paul! Looks realy profesional all your parts, also the mould you made for the intake.

I made mine much simpler, turned a plastic shape and vacuum formed it at the local hobby store. The inside is ready to mould. Also attached a fod screen (no starter motor yet due weight saving) and made the engine ready for test flying. It's now installed in my "smaller" avond F16 and had to down-rate it to 12kg at 105.000rpm. Have flown it now for 8 flights, after the 10th I will remove it for inspection to see how she holds. Interesting, the 12kg static thrust is the same as the previously installed JG100 but it seems to have much more grunt in the air. Maybe due to the larger exhaust exit area?

I will post some pic's by the time it will be disassembled.

Best regards,
Gerald

ps
Look on my site, page turbines at the bottom, cheers!







Installed here:

PDR200

Hi Gerald,
Nice work on your F.O.D screen. One of my engines will be going in my new project. It’s a Jetwelt F-104 Starfighter. I'm planning to cover it in flightmetal and make my own retracts. I haven’t decided what the other engine will be going in yet.
Your F-16 looks great It must be lots of fun to fly with 12kg thrust!

Cheers,
Paul

chrigui

1st run turbine (slighty modified) .

very good engine
no flame on startup
no hot spot
no hight temperature
fast accelleration (minimum PROJET ECU parameter) without flame or hight EGT.

performance like designer diagram...

GOOOOD!!

PDR200

Congratulations!!! Your engine looks very nice If possible, next time you run your engine please try to take some video of it running.
It’s great to hear that the engine runs well and as per the designers specifications.

Cheers,
Paul

chrigui

hello..

this is a little video taken by friend phone....
the high frequency sound of engine is bad reproducted by phone..

http://www.youtube.com/watch?v=uuRAjKeNPkE

next time i will take new video with video camera...

Gerald Rutten

Very good looking! How far did you push the enveloppe yet? Any thrust/temperature readings?
These high-flow engines all seem to work like a dream when not fully loaded yet, I had many "too early" chears on my testings. The real test will be the high-end rpm and thrust with squeezed exhaust cone.

Congrats until now, nice built!

Best regards,
Gerald