Replies to This Discussion

Permalink Reply by Peter Chaffe on October 9, 2011 at 12:51pm

er yes, the piston engine will always be more efficient! That's why all the existing Gas turbine cars and trucks are in museums now!
Aircraft gain their advantage by using TurboFans (kind of mix of turbojet and large lower reving fan)flying at high altitude and carrying a load of passengers, then fuel per passenger per 100 miles becomes very economic looking.

Avionics, Not sure where you got 200 N from, I see the quote as 200 Lbs cargo, that would need (in turbojet terms) at least a reliable 230 Lbs or 1000 N thrust, that relates to a Mass Flow required of about 3 kg/sec.
with a stator outlet temp of 1080 k (bordering on the need for Turbine cooling) An engine that size would be more powerful that the average commercial APU... A seriously major project

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Permalink Reply by avionics on October 9, 2011 at 11:20pm

Reply to Peter Chaffe

 

Permalink Reply by alex jack on Thursday

the engine i am talking about is the JetCat P200-SX Turbine from http://www.troybuiltmodels

this is where i got it from

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Permalink Reply by charlie Soppelsa on October 10, 2011 at 1:22am

We did this a few years ago using a Jetcat P120, the bearing will fail after 2 hrs.

Attachments:

• st2.wmv, 880 KB
• DSCN0270.JPG, 690 KB

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Permalink Reply by alex jack on October 10, 2011 at 1:24pm

if the JetCat P200-SX Turbine  so bad would you recommend the  Behotec B300F from http://www.altecare.com/behotec300.htm

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Permalink Reply by bmarshall5253 on October 10, 2011 at 1:47pm

Have you looked at the Wren turbo prop engines, they make a Helicopter model too

http://www.wrenturbines.co.uk/usa/engines/turboprop/wren-44-turboprop

http://www.wrenturbines.co.uk/usa/engines/helicopter/wren-44-helico...

 

I believe the turboprop produces above 50 lbs of thrust.

With the weight range you are talking about model engines are not going to make it since model aircraft are limited to 55 lbs. ( at least in US)

What are you trying to lift?

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ModeratorPermalink Reply by Sgt Ric on October 10, 2011 at 2:14pm

Each of these, even the helicopter models, are still meant for horizontal applications.

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Permalink Reply by alex jack on October 10, 2011 at 9:11pm

sgt ric what i do not get is why cant you just install a micro fuel pump to the turbine wouldn't the  vertical problem 

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