=some interesting conclusiones... (L/D !)
-AHOI, Martin !
Ahoj Henryk!
Thanks a lot for interesting PDF file about electric GosHawk.
I have to read file carefully, just now I have few comments.
It is interesting to see their approach to electric TMG design.
1) very high aspect ratio wing = small range for CG = crew must be practicaly in CG and not so much luggage.
2) very small area of wing = high load / square meter
3) 30-50 kW motor that is OK unless you would like to try electric glired aerotowing
4) small 12 kWh battery. That is good for price, however to achieve max. power you need 2,5C to achieve 30 kW and over 4C for 50 kW power. I am not fan high "C" rates.... I think that bigger batery would be better (20 kWh at least). Lower "C" = longer lifetime and lower temperatures....
5) 3,3 kW for cruise - that is nice. I beleive that this is calculated power withotu real efficiency of controller, motor and prop, but still nice*. I would like to see really measured results to see efficiency of used propulsion system.
*On last page are technical data claculated with efficiency of 84,5 % = very optimistic for motor and controller
Any video or "real" photos?
I found only photos of airframe...
Please take my comments like my personal (subjective) comments.
I was comparing written technical data with my "electric" experience with Phoenix D-14 and U-15E
