TL Ultralight Stream Turbo
Posted: Sat Nov 09, 2019 1:44 am
So I was wondering when TL Ultralight is going to make the jump to Rotax 915is ... perhaps for their latest Stream plane ( http://www.tl-ultralight.cz/en/ultralig ... aft/stream ) or so I thought ...
Well, they just announced testing of their Stream Turbo with increased 1760 lbs gross and , get this, a PBS TP100 turboprop engine ( https://www.pbsaerospace.com/our-produc ... rop-engine ) with 200 HP.
I am not sure about that - their retract Stream model is already crushing at 150 knots with Rotax 912 ULS and the gross increase is there to allow for larger fuel tanks since the turbo prop, however efficient and small it is as far as turbo prop engines go, it cruises at 25 GPH which is about 5 times more GPH than Rotax for twice the HP increase.
Yes , it can cruise at 29 000 feet but ... I think a more modest , 915is equipped model, would have been a wiser choice ... I am also wondering if European rules allow for turbo props powered ultralights ... I know they don’t have explicit speed limits and allow for retracts but this seems a bit extreme
Well, they just announced testing of their Stream Turbo with increased 1760 lbs gross and , get this, a PBS TP100 turboprop engine ( https://www.pbsaerospace.com/our-produc ... rop-engine ) with 200 HP.
I am not sure about that - their retract Stream model is already crushing at 150 knots with Rotax 912 ULS and the gross increase is there to allow for larger fuel tanks since the turbo prop, however efficient and small it is as far as turbo prop engines go, it cruises at 25 GPH which is about 5 times more GPH than Rotax for twice the HP increase.
Yes , it can cruise at 29 000 feet but ... I think a more modest , 915is equipped model, would have been a wiser choice ... I am also wondering if European rules allow for turbo props powered ultralights ... I know they don’t have explicit speed limits and allow for retracts but this seems a bit extreme