Slovenia's GOGETAIR tests MOSAIC-ready turboprop.

[Garfly]

1 hour ago, Thruster88 said:

Turbotech is claiming cruise fuel consumption of 20lph @50% oof 141 hp.  If true, that is very close to the 100hp rotax 912 @75% . We know the rotax burns 18lph at that power setting. 

 

https://www.turbotech-aero.com/solutions/

 

Yeah, one Gogetair dealer in Europe (A4 Aviation) claim to be looking at a cruise efficiency for the G750TP between 15 and 18 LPH  - of cheaper Jet A1. (see YT vid below at 01:30)  And with a 3,000 hr TBO they hope to whittle down the ICE price advantage over the service life.  Although some argue that in typical GA use a turbine could run out of cycles well before TBO hours. Others reckon that in its 2+2 Mosaic config it could give Cirrus a run for its money in the US market.  In any case, it seems Gogetair don't envisage their G750TP operating above 20,000'

 

https://www.youtube.com/watch?v=7My16WEnaPY

 

 

"... the G750TP combines the advantages of a gas turbine engine – smooth, vibration-free flight, and reliability – with impressively low fuel consumption and a long 3,000-hour TBO."

 

A4Aviation News - A4 Aviation

WWW.A4AVIATION.COM

---

Latest news articles and updates from A4Aviation

 

Edited December 28, 2024 by Garfly

[rgmwa]

Jet A1 isn't available at most airfields where you might want to operate that type of aircraft, so that could limit sales even if you could afford to buy one.

[Garfly]

Yes, although they say it can also run on many types of fuel. (Presumably not mixed at will, though.)

And I think there are parts of the world where Avgas is much harder to find than Jet A1 is.

But hey, those are first world problems we won't have to face.   ;- )

[facthunter]

 Turbines all go better at higher levels and you need a complicated prop as well. A flamed out turbine can have drag far in excess of it's rated thrust so feathering is essential. Economy relates to Pressure ratio and high turbine temps. An overtemp usually means a failure. Small turbines must rev at crazy RPM's to work so require a precision reduction gearing and the smaller ones would generally be limited to centrifugal compressors as the RR Dart was for flow stability.   Nev

Edited December 29, 2024 by facthunter
spelling

[Thruster88]

The TP-R90 looks very simple, one compressor and one power turbine, essentially the same as a turbocharger. Heat exchanger at rear. Propeller from Airmaster NZ, they have feather capabilities. 

 

[facthunter]

Not giving away much detail there. Simple schematic. Nev

[skippydiesel]

On 28/12/2024 at 5:49 PM, Blueadventures said:

Foxbats can be $240k and $120k second hand, info from Foxbat about 3 weeks ago.  I forget the price of a new Jab 230 but over $150k from memory.  Factory built Nynja is about $135k (includes freight and duty) Prices are getting up there.

Just my opinion: Foxbat's are grossly overpriced, for what is a very ordinary aircraft. Many others with similar characteristics, can be had a much lower price, new or preloved. Once again a triumph of marketing over reality. 😈

[Garfly]

 

 

 

It seems this is the fuel consumption range Turbotech claims:

 

109hp/140hp/160hp

19l/h / 20l/h / 21l/h     eco cruise

24l/h / 32l/h / 35l/h   75% power