Mitja - if you check your diagram the one marked WRONG you will see that it actually is RIGHT -- provided the direction of rotation is reversed and each blade is rotated anti clockwise in pitch in the case of a tractor (it would be better to have much lower RPMs and gear up to a dynamo but the lift vector and camber and twist are OK ) stopping a prop to feather can be a bit difficult for the reason of windmilling .
"Controllable-pitch three-bladed propeller with regeneration potential has patented blades"http://www.ivoprop.com/images/inflightpartspic.jpg
Both models utilize the same carbon / graphite fiber blades with stainless steel leading edges. The blades are capable of pitch change 3 to 17 degrees on the tips or inches of helix advancement from 18" to 52".
=sum attitude =circa 20 degrees...
Thanks Jarno, I found a mention in may 2013 article in cafe on 90lbs genset so I think we are looking at <20KW unit...maybe even lower as the engiro is about that weight for the 20KW.There have been some articles. Can't recall where, Aerokurier and Cafeblog? There was also the range-extender opposite to Lange and DG, but forgot their name.
Martin, you nailed it!
Coming back to “electric solutions”…
Question is – do we need to compare electric airplanes with combustible airplanes? When I discuss on airshow with “normal” pilots interested in electric airplanes I always hear the same – I like the idea, but I need to fly 500 km (1 000 km, 1 500 km…. however) distance. When this will be possible I will buy it because I want to decrease petrol costs. My question is – how often do you fly 500 km (1 000 km…. however) distance? When I visit most of airfields, I see pilots flying 30 min to 1 hour (mostly above the airfield or nearby) and then 2-3 hours discussing with other pilots drinking coffee J This is situation in Czech Republic please don´t take it like fact valid worldwide, for example in USA pilots take airplane more like car flying often super long cross-country flights.
Typical glider pilot request? Give me enough power for 2x takeoff to 600 m (or 1x to 1 000 m) and possibility to use the rest of available power for 150 km flight coming back home. That sounds reasonable J
Henryk, HCCI technology is not matured enough at the moment and you can't run engine with fixed compresion ratio on petrol(gasoline) (or petrol like fuel) at all loads what you need only in CI regime.
-today,thanks HCCI technology it is possible to big reduce of the fuel consumption,